remove things that aren't mechatronics lab1

Appendix1/Assertion/Assertions.c

@@ -1,18 +0,0 @@
-#include <stdio.h>
-#include <assert.h>
-
-int main()
-{
-    int x = 7;
-
-    /*  Some big code in between and let's say x
-       is accidentally changed to 9  */
-    x = 9;
-
-    // Programmer assumes x to be 7 in rest of the code
-    assert(x==7);
-
-    /* Rest of the code */
-
-    return 0;
-}

Appendix1/CodeBlocking/Blocking.c

@@ -1,45 +0,0 @@
-#include<stdio.h> 
-
-#define BLOCKSIZE (8) 
-
-int main(void)
-{ 
-    int i = 0; 
-    int limit = 19;  /* could be anything */ 
-    int blocklimit; 
-
-    /* The limit may not be divisible by BLOCKSIZE, 
-    * go as near as we can first, then tidy up.
-    */ 
-    blocklimit = (limit / BLOCKSIZE) * BLOCKSIZE; 
-    /* unroll the loop in blocks of 8 */ 
-    while( i < blocklimit ) 
-    { 
-        printf("process(%d)\n", i); 
-        printf("process(%d)\n", i+1); 
-        printf("process(%d)\n", i+2); 
-        printf("process(%d)\n", i+3); 
-        printf("process(%d)\n", i+4); 
-        printf("process(%d)\n", i+5); 
-        printf("process(%d)\n", i+6); 
-        printf("process(%d)\n", i+7); 
-
-        /* update the counter */ 
-        i += 8; 
-    }
-    if( i < limit ) 
-    { 
-        /* Jump into the case at the place that will allow
-        * us to finish off the appropriate number of items. */
-        switch( limit - i ) 
-        { 
-            case 7 : printf("process(%d)\n", i); i++; 
-            case 6 : printf("process(%d)\n", i); i++; 
-            case 5 : printf("process(%d)\n", i); i++; 
-            case 4 : printf("process(%d)\n", i); i++; 
-            case 3 : printf("process(%d)\n", i); i++; 
-            case 2 : printf("process(%d)\n", i); i++; 
-            case 1 : printf("process(%d)\n", i); 
-        }
-    } 
-}

Appendix1/DebugAssertion/DebugAssertion.c

@@ -1,11 +0,0 @@
-# define NDEBUG
-#include <stdio.h>
-# include <assert.h>
-
-int main()
-{
-    int x = 7;
-    assert (x==5);
-    printf("x = %d\n", x);
-    return 0;
-}

C10/ex2.c

@@ -1,19 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-int main() {
-	float input, output;
-	printf("Enter an angle in degrees: ");
-	scanf("%f", &input);
-
-	output = degrees_to_radians(input);
-
-	printf("%f radians\n", output);
-
-	return 0;
-}

C10/ex3.c

@@ -1,36 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-
-int main() {
-	int rc, start, end;
-
-	printf("Start: ");
-	rc = scanf("%d", &start);
-	if (rc != 1) {
-		printf("Please enter a real integer\n");
-		return 1;
-	}
-	printf("End: ");
-	rc = scanf("%d", &end);
-	if (rc != 1) {
-		printf("Please enter a real integer\n");
-		return 1;
-	}
-
-	if (start > end) {
-		printf("Please ensure that start value is smaller than end value\n");
-		return 1;
-	}
-
-	for (int i = start; i <= end; i++) {
-		printf("%d %f\n", i, degrees_to_radians((float)i));
-	}
-
-	return 0;
-}

C10/ex4.c

@@ -1,42 +0,0 @@
-#include <stdio.h>
-
-int date_to_day(int year, int month, int day) {
-	if (month < 3) {
-		month += 12;
-		year -= 1;
-	}
-
-	return ((13*month+3)/5 + day + year + year/4 - year/100 + year/400) % 7;
-}
-
-int main() {
-	int rc, year, month, day, nd;
-
-	printf("Enter a day (yyyy-mm-dd): ");
-	rc = scanf("%d-%d-%d", &year, &month, &day);
-	if (rc != 3) {
-		printf("Failed to parse date\n");
-		return 1;
-	}
-
-	nd = date_to_day(year, month, day);
-
-	switch (nd) {
-		case 0:
-			printf("Monday\n"); break;
-		case 1:
-			printf("Tuesday\n"); break;
-		case 2:
-			printf("Wednesday\n"); break;
-		case 3:
-			printf("Thursday\n"); break;
-		case 4:
-			printf("Friday\n"); break;
-		case 5:
-			printf("Saturday\n"); break;
-		case 6:
-			printf("Sunday\n"); break;
-	}
-
-	return 0;
-}

C10/ex5.c

@@ -1,45 +0,0 @@
-#include <stdio.h>
-
-int date_to_day(int year, int month, int day) {
-	if (month < 3) {
-		month += 12;
-		year -= 1;
-	}
-
-	return ((13*month+3)/5 + day + year + year/4 - year/100 + year/400) % 7;
-}
-
-void print_day_of_week(int day) {
-	switch (day) {
-		case 0:
-			printf("Monday\n"); break;
-		case 1:
-			printf("Tuesday\n"); break;
-		case 2:
-			printf("Wednesday\n"); break;
-		case 3:
-			printf("Thursday\n"); break;
-		case 4:
-			printf("Friday\n"); break;
-		case 5:
-			printf("Saturday\n"); break;
-		case 6:
-			printf("Sunday\n"); break;
-	}
-}
-
-int main() {
-	int rc, year, month, day, nd;
-
-	printf("Enter a day (yyyy-mm-dd): ");
-	rc = scanf("%d-%d-%d", &year, &month, &day);
-	if (rc != 3) {
-		printf("Failed to parse date\n");
-		return 1;
-	}
-
-	nd = date_to_day(year, month, day);
-	print_day_of_week(nd);
-
-	return 0;
-}

C10/function_example.c

@@ -1,43 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-
-// Define HOW the function is to be used, code comes later
-float CalculateSurfaceAreaOfCylinder ( float R, float L );
-
-// Function to calculate the volume of a cylinder
-float CalculateVolumneOfCylinder ( float R, float L )
-{
-	// Calculate  \& return value
-	float Result;
-	Result = (M_PI * R * R * L);
-	return (Result);
-}
-int main(void)
-{
-    // Declare variables
-    float r, l, SurfaceArea, Volume;
-
-    // Obtain values
-    printf("\nPlease enter the radius");
-    scanf("%f", &r);
-
-    printf("\nPlease enter the length");
-    scanf("%f", &l);
-
-    // Get and display the volume
-    Volume = CalculateVolumneOfCylinder(r, l);
-    printf ("\nThe volume is %f", Volume);
-
-    // Get and display the surface area
-    SurfaceArea = CalculateSurfaceAreaOfCylinder(r, l);
-    printf ("\nThe surface area is %f", SurfaceArea);
-
-    return 0;
-}
-// Calculate the surface areas of a cylinder
-float CalculateSurfaceAreaOfCylinder ( float R, float L )
-{
-	// Calculate  \& return value
-	return (2 * M_PI * R * R ) +  ( 2 * M_PI * R * L);
-}

C10/void_function_example.c

@@ -1,38 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Define HOW the function is to be used, code comes later
-void DisplayDayOfTheWeek ( int Day );
-
-int main(void)		// Execution starts here
-{
-   	int d;	// Declare variable
-
-    // Obtain values
-    printf("\nPlease enter a number betwwen 0 and 6");
-    scanf("%d", &d);
-
-    // Use a function to display the day of the week
-    DisplayDayOfTheWeek(d);
-
-    return 0;
-}
-
-// Function to display day of week - nothing is returned
-void DisplayDayOfTheWeek ( int Day )
-{
-    // Display date based on value
-    // Case values on one line as easier to cut/paste :-)    
-    switch (Day)
-    {
-			case 0 : printf ("Sunday") ; break;
-			case 1 : printf ("Monday") ; break;
-			case 2 : printf ("Tuesday") ; break;
-         
-		    /* etc. for other days of the week */    
-    
-    	default:
-        	printf ("Invaid day provided");
-    }
-    return;	// No value needed as the return type is void
-}

C11/array_loop_example_1.c

@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void) // Main : Execution starts here...
-{
-    // Declare variables - pre-populate the array
-    int Ages[10] = {12,34,23,11,8,19,6,44,9,16};
-    int i;
-
-    // Loop from 0 to 9 inclusive
-    for  ( i = 0 ; i < 10 ; i++ )
-        printf ("Item %d contains value %d\n",i ,Ages[i]);
-
-    // Exit the application
-    return 0;
-}

C11/array_loop_example_2.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-    // Declare variables
-    int SampleData[10];
-    int a=0;
-
-    // Show initial value of a
-    printf ("Values in a is %d \n", a);
-
-    // Change an array item that IS NOT DEFINED
-    SampleData[10] = 20;
-
-
-    // See how thi affect the value in a
-    printf ("Values in a is %d \n", a);
-
-    // Note: we can retieive this 'invalid' value - it is however 'a' we are getting
-    printf ("Values in SampleData[10] is %d \n", SampleData[10]);
-
-    return (0);     // Exit indicating sucess
-}

C11/ex2.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-
-#define ARRAY_LEN 90
-
-int main() {
-	int i;
-	float arr[ARRAY_LEN];
-
-	for (i = 0; i < ARRAY_LEN; i++) {
-		arr[i] = (float)i;
-	}
-	for (i = 0; i < ARRAY_LEN; i++) {
-		printf("%d %f\n", i, arr[i]);
-	}
-}

C11/ex3.c

@@ -1,21 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-#define ARRAY_LEN 90
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-int main() {
-	int i;
-	float arr[ARRAY_LEN];
-
-	for (i = 0; i < ARRAY_LEN; i++) {
-		arr[i] = degrees_to_radians((float)i);
-	}
-
-	for (i = 0; i < ARRAY_LEN; i++) {
-		printf("%d %f\n", i, arr[i]);
-	}
-}

C11/initialise_string_example_1.c

@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main : Execution starts here...
-int main(void)
-{
-	// Declare variable - pre-populate the array
-	char msg[] = {'H','i',' ','W','o','r','l','d','\0'};
-
-	// Output with printf
-	printf ("The text is: %s\n", msg);
-
-	puts(msg); // We could also use puts to display the string
-
-	return 0;    // Exit the application
-}

C11/initialise_string_example_2.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void) // Main : Execution starts here...
-{
-	// Declare variable - pre-populate the array
-	char msg[] = "Hello World";
-
-	// Output with printf
-	printf ("The text is: %s\n", msg);
-
-	puts(msg); // We could also use puts to display the string
-
-	return 0;      // Exit the application
-}

C12/scope_of_variables.c

@@ -1,20 +0,0 @@
-void SampleFunction1 ( int x )
-{	
-	int i,j,k;
-	return;
-}
-
-void SampleFunction2 ( int x )
-{
-	int i,j,k;
-	SampleFunction1(x);
-	return;
-}
-
-// Main : Execution starts here...
-int main(void)
-{
-	int i = 1;
-	SampleFunction2(i);
-	return 0;
-}

C13/AccessingViaPointers/accessing_via_pointers.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main (void )
-{
-    // Declare a in integer
-    int c,d;
-
-	// Declar and integer pointer
-	int *ptrC;
-
-	// Some assgnments
-    c = 10; // C now contains the value 10
-    ptrC = &c;   // ptrC now 'Points' to c
-
-    // Get the value of c via the pointer and store in d
-    d = *ptrC;  // d now contains 10
-    printf ("\nThe value in d is %d", d);
-
-    // Change the value of c via the pointer ptrC
-    *ptrC = 1;  //c now contains 1
-    printf ("\nThe value in c is %d", c);
-
-	return 0;   // exit
-}

C13/assigning_pointers.c

@@ -1,24 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main (void )
-{
-    // Integer variables
-    int a, ValueB, d;
-
-	// integer pointers
-	int *ptrA=&a, *B=&ValueB, *Data=&d;
-
-	// Float variables
-	float f,y,z;
-
-	// Float pointers
-	float *pf=&f , *q=&y, *Zvalue=&z;
-
-	// We could also do this on separate lines e.g.
-	int SomeData;
-	int *Another;
-	Another = &SomeData;
-
-	return 0;
-}

C13/ex2.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main (void )
-{
-	// Declare a in integer
-	int c,d;
-
-	// Declar and integer pointer
-	int *ptrC;
-
-	// Some assgnments
-	c = 10; // C now contains the value 10
-	ptrC = &c;   // ptrC now 'Points' to c
-
-	*ptrC = 20;
-
-	// Get the value of c via the pointer and store in d
-	d = *ptrC;  // d now contains 10
-	printf ("The value in d is %d\n", d);
-
-	// Change the value of c via the pointer ptrC
-	*ptrC = 1;  //c now contains 1
-	printf ("The value in c is %d\n", c);
-
-	return 0;   // exit
-}

C13/ex3.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main (void )
-{
-	// Declare a in integer
-	float c,d;
-
-	// Declar and integer pointer
-	float *ptrC;
-
-	// Some assgnments
-	c = 10; // C now contains the value 10
-	ptrC = &c;   // ptrC now 'Points' to c
-
-	*ptrC = 20;
-
-	// Get the value of c via the pointer and store in d
-	d = *ptrC;  // d now contains 10
-	printf ("The value in d is %f\n", d);
-
-	// Change the value of c via the pointer ptrC
-	*ptrC = 1;  //c now contains 1
-	printf ("The value in c is %f\n", c);
-
-	return 0;   // exit
-}

C14/Makefile

@@ -1 +0,0 @@
-include ../Makefile

C14/ex1.c

@@ -1,32 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-void cartesian_to_polar(float x, float y, float *r, float *theta) {
-	*r = sqrtf(x*x + y*y);
-	*theta = y/x;
-}
-
-int main() {
-	int rc;
-	float x, y, r, theta;
-
-	printf("x: ");
-	rc = scanf("%f", &x);
-	// check that scanf was successful by checking if it returned 1 (1 successfully scanned item)
-	if (rc != 1) {
-		printf("Please enter a real number\n");
-		return 1;
-	}
-
-	printf("y: ");
-	rc = scanf("%f", &y);
-	if (rc != 1) {
-		printf("Please enter a real number\n");
-		return 1;
-	}
-
-	cartesian_to_polar(x, y, &r, &theta);
-	printf("r=%f theta=%f\n", r, theta);
-
-	return 0;
-}

C14/ex2.c

@@ -1,29 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-void process(float degrees, float* radians, float* sin_val, float* cos_val, float* tan_val) {
-	*radians = degrees_to_radians(degrees);
-	*sin_val = sin(*radians);
-	*cos_val = cos(*radians);
-	*tan_val = tan(*radians);
-}
-
-
-int main() {
-	float degrees, radians, sin_val, cos_val, tan_val;
-
-	printf("Degrees: ");
-	scanf("%f", &degrees);
-
-	process(degrees, &radians, &sin_val, &cos_val, &tan_val);
-
-	printf("Radians: %f\n", radians);
-	printf("Sine: %f\n", sin_val);
-	printf("Cosine: %f\n", cos_val);
-	printf("Tangent: %f\n", tan_val);
-}

C14/ex3.c

@@ -1,33 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-void process(float degrees, float* radians, float* sin_val, float* cos_val, float* tan_val) {
-	*radians = degrees_to_radians(degrees);
-	*sin_val = sin(*radians);
-	*cos_val = cos(*radians);
-	*tan_val = tan(*radians);
-}
-
-
-int main() {
-	int degrees_start, degrees_end;
-	float radians, sin_val, cos_val, tan_val;
-
-	printf("Start: ");
-	scanf("%d", &degrees_start);
-	printf("End: ");
-	scanf("%d", &degrees_end);
-	printf("Degs\tRad\tsin\tcos\ttan\n");
-
-	for (int i = degrees_start; i <= degrees_end; i++) {
-		process((float)i, &radians, &sin_val, &cos_val, &tan_val);
-		printf("%d\t%0.3f\t%0.3f\t%0.3f\t%0.3f\n", i, radians, sin_val, cos_val, tan_val);
-	}
-
-
-}

C14/quadratic_solver.c

@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-
-int SolveQuadraticEquation(float a, float b, float c, float *x1, float *x2)
-{
-    float d;    // For storing b^2 - 4*a*c
-
-    if ( a == 0)    // Not a quadratie
-    {
-        return -1;
-    }
-
-    // calculate and store b*b-4*a*c for testing ans use later (if OK)
-    d = b*b - 4*a*c;
-
-    if ( d < 0 )
-    {
-        return -1;  // Complex
-    }
-
-    // If we have got to here, we can calculate x1 and x2
-    *x1 = ( -b + sqrt (d)) / (2 * a);  // Note the use of the * before x1 & x2
-    *x2 = ( -b - sqrt (d)) / (2 * a);  // to write to the relevant memory locations 
-
-    // As we got here OK, return 0 to indicate all is OK
-    return 0;
-}
-
-int main (void ) 
-{
-    float A,B,C,x1,x2;
-    int retval;
-
-    printf ("Please enter coefficients A,B and C separated by a space\n");
-    scanf ("%f %f %f", &A, &B, &C);
-
-    // Make use of the function
-    retval = SolveQuadraticEquation(A, B, C, &x1, &x2);
-
-    // Use the retval to determine if we can display the answers or an derror message
-    if ( retval == -1 )
-    {
-        printf ("Not a quadratic\n");
-    }
-    else if (retval == -1)
-    {
-        printf ("The solution is complex - I cannot solve these\n");
-    }
-    else
-    {
-        printf("\nThe solutions are x1=%f, x2=%f", x1, x2);
-    }
-    return 0;   // exit
-}

C14/quadratic_solver_function.c

@@ -1,24 +0,0 @@
-int SolveQuadraticEquation(float a, float b, float c, float *x1, float *x2)
-{
-    float d;    // For storing b^2 - 4*a*c
-
-    if ( a == 0)    // Not a quadratie
-    {
-        return -1;
-    }
-
-    // calculate and store b*b-4*a*c for testing ans use later (if OK)
-    d = b*b - 4*a*c;
-
-    if ( d < 0 )
-    {
-        return -1;  // Complex
-    }
-
-    // If we have got to here, we can calculate x1 and x2
-    *x1 = ( -b + sqrt (d)) / (2 * a);  // Note the use of the * before x1 & x2
-    *x2 = ( -b - sqrt (d)) / (2 * a);  // to write to the relevant memory locations
-
-    // As we got here OK, return 0 to indicate all is OK
-    return 0;
-}

C15/pointer_array_example_1.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare and populate an integer array
-    int MyArray[10] = {2,4,6,8,10,12,14,18,20};
-    
-    // Declate an integer pointer
-    int *pI;
-
-    // Get the start address  by asking for the address iof array item [0]
-    pI = &MyArray[0];
-
-    // Or, use the fact the array name on its own is the start address of the array
-    pI = MyArray;
-
-    return 0;   // Exit
-}

C15/pointer_array_example_2.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare an integer array and an integer pointer
-    int MyArray[10] = {2,4,6,8,10,12,14,16,18,20};
-    int *pI;
-
-    // Get the start address  by asking for the address iof array item [0]
-    pI = &MyArray[0];   // Or use:     pI = MyArray;
-
-    // Display the 1st item in the array, first be accessing rhe array
-    printf("The value at array item [0] is %d\n", MyArray[0]);
-
-    // Since the pointer points to the address of the 1st item we can
-    // access it as we would for a pointer pointing to any single variable
-    
-    printf("The value at the memory address held in pI is %d\n", *pI);
-
-    return 0;   // Exit
-}

C15/pointer_array_example_3.c

@@ -1,23 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare an integer array and an integer pointer
-    int MyArray[10] = {2,4,6,8,10,12,14,16,18,20};
-    int *pI;
-    int i;
-
-    // Get the start address  by asking for the address iof array item [0]
-    pI = &MyArray[0];       // or use: pI = MyArray;
-
-    // Use loop to display values
-    for ( i = 0 ; i < 10 ; i++ )
-    {
-        printf ("Value at index %d (direct access to the arrays) is: %d\n", i, MyArray[i]);
-        printf ("Value at index %d (access via the pointer) is: %d\n", i, pI[i]);
-    }
-
-    return 0;   // Exit
-}

C15/pointer_array_example_4.c

@@ -1,33 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare an integer array and an integer pointer
-    int MyArray[10];
-    int *pI;
-    int i;
-
-    // Get the start address  by asking for the address iof array item [0]
-    pI = &MyArray[0];       // or use: pI = MyArray;
-
-    // Use loop to display values
-    for ( i = 0 ; i < 10 ; i++ )
-    {
-        //  Set the value then use the increment operator to move the pointer
-        //  to the next memory location. you can picture this as two steps: '
-        //
-        //      *pI = 5 + 4*i;
-        //  then
-        //      *pI++;
-
-        *pI++ = 5 + 4*i;	// set value at index[i] to 5+4*i
-    }
-
-	// Display the values placed in the array
-    for ( i = 0 ; i < 10 ; i++)
-    {
-        printf("%d ", MyArray[i]);
-    }
-    return 0;   // Exit
-}

C16/alloc_example_1.c

@@ -1,17 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare an integer array and an integer pointer
-    int *pData;
-
-    // Using malloc
-    pData = malloc ( 10000 * sizeof (int));
-
-    // Using calloc
-    pData = calloc ( 10000 , sizeof (int));
-
-    return 0;   // Exit
-}

C16/alloc_example_2.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare an integer array and an integer pointer
-    int *pData;
-
-    pData = calloc ( 10000 , sizeof (float));           // No warning
-    pData = (float *)calloc ( 10000 , sizeof (float));  // Warning
-
-    return 0;   // Exit
-}

C16/alloc_example_3.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare an integer array and an integer pointer
-    int *pData;
-
-    // Using calloc (same approach malloc)
-    pData = calloc ( 10000 , sizeof (int));
-
-    if ( pData == NULL)
-    {
-        printf ("\nMemory could not be allocated - terminating");
-        return -1;  // Use minus one as we did not exit successfully
-    }
-    
-    // We have our  memory, make use of it here!
-    
-    return 0;   // Exit successfully
-}

C16/alloc_example_4.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare an integer array and an integer pointer
-    int *pData;
-
-    // Using calloc (same approach malloc)
-    pData = calloc ( 10000 , sizeof (int));
-
-    if ( pData == NULL)
-    {
-        printf ("\nMemory could not be allocated - terminating");
-        return -1;  // Use minus one as we did not exit sucesfully
-    }
-
-     // We have our  memory, make use of it here!
-
-    // Free up the allocated memoey
-    free (pData);
-
-    return 0;   // Exit sucesfully
-}

C16/ex2.c

@@ -1,18 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare an integer array and an integer pointer
-    int *pData;
-    int datlen;
-
-    printf("Length of data to be allocated: ");
-    scanf("%d", &datlen);
-
-    // Using malloc
-    pData = malloc ( datlen * sizeof (int));
-
-    free(pData);
-    return 0;   // Exit
-}

C16/ex3.c

@@ -1,23 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare an integer array and an integer pointer
-    int *pData;
-    int datlen;
-
-    printf("Length of data to be allocated: ");
-    scanf("%d", &datlen);
-
-    // Using malloc
-    pData = malloc ( datlen * sizeof (int));
-
-    for (int i = 0; i < datlen; i++) {
-	    pData[i] = i;
-	    printf("%d %d\n", i, i);
-    }
-
-    free(pData);
-    return 0;   // Exit
-}

C17/ArraysToFunctions1/arrays_to_functions_example_1.c

@@ -1,40 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Simple function to populate an integer array 
-void PopulateTheArray ( int Size, int ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        ArrayData[i] = 2*i + 1; // Treat it like a normal array
-    }
-}
-
-
-// Simple function to display contents of an integer array
-void DisplayTheArray ( int Size, int ArrayData[])
-{
-    int i;      // Variable to use in our loop
- 
-    for ( i = 0 ; i < Size ; i++)
-    {
-        printf ("Item %d of the array contains %d\n", i, ArrayData[i]);
-    }
-}
-
-// Main () - execution starts here
-int main (void)
-{
-    int Data[10];
-
-    // Pass the size of the array and the array to our function - 					
-    // remembering that the array name on its own is the base address, 
-    // and so is the same as passing &Data[0]
-
-    PopulateTheArray(10, Data);
-    DisplayTheArray(10, Data);
-
-    return (0);     // Exit indicating sucess
-}

C17/ArraysToFunctions2/arrays_to_functions_example_2.c

@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Simple function to populate an integer array
-void PopulateTheArray ( int Size, int ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        ArrayData[i] = 2*i + 1; // Treat it like a normal array
-    }
-}
-// Simple function do display contents an integer array
-void DisplayTheArray ( int Size, int ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        printf ("Item %d of the array contains %d\n", i, ArrayData[i]);
-    }
-}
-// Main () - execution starts here
-int main (void)
-{
-
-    int iSizeForArray;
-    int *pData;              // A pointer to hold the base address of out array
-
-    // Ask for the size of the array and store result
-
-    printf("\nPlease enter the size of the array to dynamically allocate");
-    scanf ("%d", &iSizeForArray);
-
-    // Use calloc with checking
-    pData = calloc ( iSizeForArray, sizeof (int));
-
-    // Check we got the memory
-    if ( pData == NULL)
-    {
-        printf ("\nSorry, I could not allocate the memory, bye!");
-        return -1;
-    }
-
-    // Pass the size, iSizeForArray) and the pointer created 
-    // which points to the start of the sucesfully allocated memory
-
-    PopulateTheArray(iSizeForArray, pData);
-    DisplayTheArray(iSizeForArray, pData);
-
-    free (pData);	    // Free up the memory before exiting
-
-    return (0);     // Exit indicating sucess
-}

C17/ex2.c

@@ -1,62 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-#include <stdlib.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-
-// Simple function to populate an integer array
-void PopulateTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        ArrayData[i] = degrees_to_radians(i); // Treat it like a normal array
-    }
-}
-// Simple function do display contents an integer array
-void DisplayTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        printf ("%d\t%0.3f\n", i, ArrayData[i]);
-    }
-}
-// Main () - execution starts here
-int main (void)
-{
-
-    int iSizeForArray;
-    float *pData;              // A pointer to hold the base address of out array
-
-    // Ask for the size of the array and store result
-
-    printf("Please enter the size of the array to dynamically allocate: ");
-    scanf ("%d", &iSizeForArray);
-
-    // Use calloc with checking
-    pData = calloc( iSizeForArray, sizeof (float));
-
-    // Check we got the memory
-    if ( pData == NULL)
-    {
-        printf ("Sorry, I could not allocate the memory, bye!\n");
-        return -1;
-    }
-
-    // Pass the size, iSizeForArray) and the pointer created 
-    // which points to the start of the sucesfully allocated memory
-
-    PopulateTheArray(iSizeForArray, pData);
-    DisplayTheArray(iSizeForArray, pData);
-
-    free(pData);	    // Free up the memory before exiting
-
-    return (0);     // Exit indicating sucess
-}

C18/BinaryFile/binary_file_example.c

@@ -1,64 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-
-    // Declate file stream variables
-    FILE *fInput, *fOutput;
-
-    // Other variables needed
-    int i;
-    int SampleArray[10] = {1,2,3,4,5,6,7,8,9,10};
-    float f = 23.4;
-
-    // Try and open the binary "numbers.dat" (in the current directory) file for writing
-    fOutput = fopen ("numbers.dat", "wb");
-
-    // Check we were able to open the file
-    if ( fOutput == NULL)
-    {
-        printf ("\nThe file could not be opened for writing, exiting");
-        return -1;
-    }
-
-    // Write out a single float to the binary file
-    fwrite ( &f, sizeof(float), 1 , fOutput);
-
-    // Now the entire array on one go
-    fwrite ( SampleArray, sizeof(int), 10 , fOutput);
-
-    // And close the file
-    fclose (fOutput);
-
-
-    // Try and open the binary "numbers.dat" (in the current directory) file for reading
-    fInput = fopen ("numbers.dat", "rb");
-
-    // Check we were able to open the file
-    if ( fInput== NULL)
-    {
-        printf ("\nthe file could not be opened for reading, exiting");
-        return -1;
-    }
-
-    // Read a single float from the binary file into f
-    fread ( &f, sizeof(float), 1 , fOutput);
-
-    // Now read the entire array on one go
-    fread ( SampleArray, sizeof(int), 10 , fOutput);
-
-    // Display the values read from the file on the screen
-    printf ("The value read into f is %f\n", f);;
-    for ( i = 0 ; i < 10 ; i++)
-    {
-        printf ("Item %d of the array contains %d\n",i, SampleArray[i]);
-    }
-
-    // And close the file
-    fclose (fInput);
-
-
-    return (0);     // Exit indicating sucess
-}

C18/FileOpen/file_open_example.c

@@ -1,52 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-
-    // Declate file stream variables
-    FILE *fInput, *fOutput, *fRecords;
-
-
-    // Try and open the text "sample.txt" (in the current directory) file for reading
-    fInput = fopen ("sample.txt", "r");
-
-    // Check we were able to open the file
-    if ( fInput == NULL)
-    {
-        printf ("\nthe file could not be opened");
-        return -1;	// Exit as unsuccessful 
-    }
-    
-	fclose (fInput);	// Close the file
-
-    // Try and open the binary "samples.dat" (in the current directory) file for writing
-    // if a file of this name already exists it will be deleted
-    fOutput = fopen ("samples.dat", "wb");
-
-    // Check we were able to open the file
-    if ( fOutput == NULL)
-    {
-        printf ("\nthe file could not be opened");
-		return -1;	// Exit as unsuccessful 
-    }
-
-	fclose (fOutput);	// Close the file
-
-    // Open, for appending, the text file "records.txt". If the file does not already
-    // exists, a new one of this name will be created (as if "w") were the mocde
-    fRecords = fopen ("records.txt", "a");
-
-    // Check we were able to open the file
-    if ( fRecords == NULL)
-    {
-        printf ("\nthe file could not be opened");
-		return -1;	// Exit as unsuccessful 
-    }
-
-	fclose (fRecords);
-
-
-    return (0);     // Exit indicating sucess
-}

C18/TextFile/numbers.txt

@@ -1,10 +0,0 @@
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10

C18/TextFile/text_file_example.c

@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-    // Declate file stream variables
-    FILE *fInput, *fOutput;
-
-    // Other variables needed
-    int i,d;
-
-    // Try and open the text "sample.txt" (in the current directory) file for writing
-    fOutput = fopen ("numbers.txt", "w");
-
-    // Check we were able to open the file
-    if ( fOutput == NULL)
-    {
-        printf ("\nthe file could not be opened for writing, exiting");
-        return -1;
-    }
-
-    // Use a loop to write values to the newly created file
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fprintf (fOutput, "%d\n", i);
-    }
-
-    // And close the file
-    fclose (fOutput);
-
-    // Try and open the binary "numbers " (in the current directory) file for reading
-
-    fInput = fopen ("numbers.txt", "r");
-
-    // Check we were able to open the file
-    if ( fInput == NULL)
-    {
-        printf ("\nthe file could not be opened for reading, exiting");
-        return -1;
-    }
- 
-    // Read, line by line the 10 values written into variable d
-    // and then display the contents of d on the screen
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fscanf (fInput, "%d", &d);
-        printf ("Value read from file %d\n",d);
-    }
-
-    // And close the file
-    fclose (fInput);
-
-    return (0);     // Exit indicating success
-}

C18/ex2.c

@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-    // Declate file stream variables
-    FILE *fInput, *fOutput;
-
-    // Other variables needed
-    int i, d, d2;
-
-    // Try and open the text "sample.txt" (in the current directory) file for writing
-    fOutput = fopen ("numbers.txt", "w");
-
-    // Check we were able to open the file
-    if ( fOutput == NULL)
-    {
-        printf ("The file could not be opened for writing, exiting\n");
-        return -1;
-    }
-
-    // Use a loop to write values to the newly created file
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fprintf (fOutput, "%d %d\n", i, i*i);
-    }
-
-    // And close the file
-    fclose (fOutput);
-
-    // Try and open the binary "numbers " (in the current directory) file for reading
-
-    fInput = fopen ("numbers.txt", "r");
-
-    // Check we were able to open the file
-    if ( fInput == NULL)
-    {
-        printf ("The file could not be opened for reading, exiting\n");
-        return -1;
-    }
- 
-    // Read, line by line the 10 values written into variable d
-    // and then display the contents of d on the screen
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fscanf (fInput, "%d %d", &d, &d2);
-        printf ("Value read from file: %d %d\n", d, d2);
-    }
-
-    // And close the file
-    fclose (fInput);
-
-    return (0);     // Exit indicating success
-}

C18/ex3.c

@@ -1,60 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-// Main () - execution starts here
-int main (void)
-{
-    // Declate file stream variables
-    FILE *fInput, *fOutput;
-    // 8x the maximum filename length on most filesystems should be a decent size
-    char filename[2049] = { 0 };
-
-    printf("Enter filename: ");
-    scanf("%2048s", filename);
-
-    // Other variables needed
-    int i, d, d2;
-
-    // Try and open the text "sample.txt" (in the current directory) file for writing
-    fOutput = fopen (filename, "w");
-
-    // Check we were able to open the file
-    if ( fOutput == NULL)
-    {
-        printf ("The file could not be opened for writing, exiting\n");
-        return -1;
-    }
-
-    // Use a loop to write values to the newly created file
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fprintf (fOutput, "%d %d\n", i, i*i);
-    }
-
-    // And close the file
-    fclose (fOutput);
-
-    // Try and open the binary "numbers " (in the current directory) file for reading
-
-    fInput = fopen ("numbers.txt", "r");
-
-    // Check we were able to open the file
-    if ( fInput == NULL)
-    {
-        printf ("The file could not be opened for reading, exiting\n");
-        return -1;
-    }
- 
-    // Read, line by line the 10 values written into variable d
-    // and then display the contents of d on the screen
-    for ( i = 1 ; i <= 10 ; i++)
-    {
-        fscanf (fInput, "%d %d", &d, &d2);
-        printf ("Value read from file: %d %d\n", d, d2);
-    }
-
-    // And close the file
-    fclose (fInput);
-
-    return (0);     // Exit indicating success
-}

C18/ex4.c

@@ -1,92 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-#include <stdlib.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-
-// Simple function to populate an integer array
-void PopulateTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        ArrayData[i] = degrees_to_radians(i); // Treat it like a normal array
-    }
-}
-// Simple function do display contents an integer array
-void DisplayTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        printf ("%d\t%0.3f\n", i, ArrayData[i]);
-    }
-}
-
-int SaveArray (char *filename, int Size, float ArrayData[])
-{
-	FILE *fp;   // File Pointer
-	int i;      // Variable to use in our loop
-
-	fp = fopen(filename, "w");
-	// if file open failed, return error to caller
-	if (fp == NULL) {
-		return 1;
-	}
-
-
-	for ( i = 0 ; i < Size ; i++)
-	{
-		fprintf(fp, "%d\t%0.3f\n", i, ArrayData[i]);
-	}
-
-	// close file, returns 0 on successful closing (therefore function has executed sucessfully)
-	return fclose(fp);
-}
-// Main () - execution starts here
-int main (void)
-{
-    char filename[2049];
-    int rc, iSizeForArray;
-    float *pData;              // A pointer to hold the base address of out array
-
-    // Ask for the size of the array and store result
-
-    printf("Please enter the size of the array to dynamically allocate: ");
-    scanf ("%d", &iSizeForArray);
-
-    // Use calloc with checking
-    pData = calloc( iSizeForArray, sizeof (float));
-
-    // Check we got the memory
-    if ( pData == NULL)
-    {
-        printf ("Sorry, I could not allocate the memory, bye!\n");
-        return -1;
-    }
-
-    // Pass the size, iSizeForArray) and the pointer created 
-    // which points to the start of the sucesfully allocated memory
-
-    PopulateTheArray(iSizeForArray, pData);
-    DisplayTheArray(iSizeForArray, pData);
-
-    // Exercise doesn't ask to use function but kind of pointless without
-    printf("Enter filename: ");
-    scanf("%2048s", filename);
-    rc = SaveArray(filename, iSizeForArray, pData);
-    if (rc != 0) {
-	    printf("Error saving file\n");
-	    free(pData);
-	    return rc;
-    }
-
-    free(pData);	    // Free up the memory before exiting
-    return (0);     // Exit indicating sucess
-}

C18/ex5.c

@@ -1,88 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-#include <stdlib.h>
-
-
-float degrees_to_radians(float degrees) {
-	return M_PI * degrees / 180.0;
-}
-
-
-// Simple function to populate an integer array
-void PopulateTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        ArrayData[i] = degrees_to_radians(i); // Treat it like a normal array
-    }
-}
-// Simple function do display contents an integer array
-void DisplayTheArray ( int Size, float ArrayData[])
-{
-    int i;      // Variable to use in our loop
-
-    for ( i = 0 ; i < Size ; i++)
-    {
-        printf ("%d\t%0.3f\n", i, ArrayData[i]);
-    }
-}
-
-int SaveArrayBinary (char *filename, int Size, float ArrayData[])
-{
-	FILE *fp;   // File Pointer
-	int i;      // Variable to use in our loop
-
-	fp = fopen(filename, "wb");
-	// if file open failed, return error to caller
-	if (fp == NULL) {
-		return 1;
-	}
-
-	// write data
-	fwrite(ArrayData, sizeof(float), Size, fp);
-	// close file, returns 0 on successful closing (therefore function has executed sucessfully)
-	return fclose(fp);
-}
-// Main () - execution starts here
-int main (void)
-{
-	char filename[2049];
-	int rc, iSizeForArray;
-	float *pData;              // A pointer to hold the base address of out array
-
-	// Ask for the size of the array and store result
-
-	printf("Please enter the size of the array to dynamically allocate: ");
-	scanf ("%d", &iSizeForArray);
-
-	// Use calloc with checking
-	pData = calloc( iSizeForArray, sizeof (float));
-
-	// Check we got the memory
-	if ( pData == NULL)
-	{
-		printf ("Sorry, I could not allocate the memory, bye!\n");
-		return -1;
-	}
-
-	// Pass the size, iSizeForArray) and the pointer created 
-	// which points to the start of the sucesfully allocated memory
-
-	PopulateTheArray(iSizeForArray, pData);
-	DisplayTheArray(iSizeForArray, pData);
-
-	// Exercise doesn't ask to use function but kind of pointless without
-	printf("Enter filename: ");
-	scanf("%2048s", filename);
-	rc = SaveArrayBinary(filename, iSizeForArray, pData);
-	if (rc != 0) {
-		printf("Error saving file\n");
-		free(pData);
-		return rc;
-	}
-
-	free(pData);    // Free up the memory before exiting
-	return (0);     // Exit indicating sucess
-}

C18/ex6.c

@@ -1,51 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-
-int main() {
-	FILE *fp;                    // file pointer
-	float *data;                 // data pointer (array of floats)
-	int i, file_size, arr_size;
-	char filename[2049];
-
-	printf("Enter filename to read: ");
-	scanf("%2048s", filename);
-
-	fp = fopen(filename, "rb");
-	if (fp == NULL) {
-		printf("Failed to open file\n");
-		return 1;
-	}
-
-	// get file size (technically isn't the best way because SEEK_END is undefined behaviour:
-	//
-	// "Library implementations are allowed to not meaningfully support SEEK_END
-	// (therefore, code using it has no real standard portability)."
-	// ~ https://cplusplus.com/reference/cstdio/fseek/
-	//
-	// " Setting the file position indicator to end-of-file, as with fseek(file, 0, SEEK_END),
-	// has undefined behavior for a binary stream (because of possible trailing null characters) or
-	// for any stream with state-dependent encoding that does not assuredly end in the initial shift
-	// state. "
-	// ~ https://port70.net/~nsz/c/c11/n1570.html#note268
-	//
-	// it is also limited to 2GB files as it returns a signed integer
-	// better to use something like this probably:
-	// https://stackoverflow.com/a/238609
-	//
-	// but louise uses fseek so i will too
-	fseek(fp, 0, SEEK_END);
-	file_size = ftell(fp);
-	arr_size = file_size/sizeof(float);
-	rewind(fp);
-
-	// allocate memory and read data
-	data = malloc(file_size);
-	fread(data, sizeof(float), arr_size, fp);
-
-	for (i = 0; i < arr_size; i++) {
-		printf("%d %0.3f\n", i, data[i]);
-	}
-
-	free(data);
-}

C19/DefineExamples/define_example.c

@@ -1,18 +0,0 @@
-#define UP 1
-#define DOWN 2
-
-int main()
-{
-    int i = 1;
-    
-    if (i == UP )
-    {
-        // Do something
-    }
-    
-    if ( i == DOWN)
-    {
-        // Doe something else
-    }
-    return 0;
-}

C19/enum_example.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-enum DOW { sun, mon, tue, wed, thu, fri, sat } ;
-
-// Main () - execution starts here
-int main (void)
-{
-    enum DOW day;
-
-    /* Code that get a value for 'day' */
-    day = tue;
-
-    switch (day)
-    {
-        case sun : printf ("Sunday\n") ; break ;
-        case mon : printf ("Monday\n") ; break ;
-        case tue : printf ("Tuesday\n") ; break ;
-        /* etc. */
-    }
-    return (0);     // Exit indicating success
-}

C19/ex1.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-
-
-struct Person {
-	int age;
-	char forename[30];
-	char surname[50];
-};
-
-
-int main() {
-	struct Person p;
-
-	printf("Enter age: "); scanf("%d", &p.age);
-	printf("Enter forename: "); scanf("%29s", p.forename);
-	printf("Enter surname: "); scanf("%49s", p.surname);
-
-	printf("p.age=%d p.forename=%s p.surname=%s\n", p.age, p.forename, p.surname);
-	return 0;
-}

C19/ex2.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-
-
-struct Person {
-	int age;
-	char forename[30];
-	char surname[50];
-};
-
-
-void print_person(struct Person p) {
-	printf("p.age=%d p.forename=%s p.surname=%s\n", p.age, p.forename, p.surname);
-}
-
-
-int main() {
-	struct Person p;
-
-	printf("Enter age: "); scanf("%d", &p.age);
-	printf("Enter forename: "); scanf("%29s", p.forename);
-	printf("Enter surname: "); scanf("%49s", p.surname);
-
-	print_person(p);
-	return 0;
-}

C19/ex3.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-
-
-struct Person {
-	int age;
-	int year_of_birth;
-	char forename[30];
-	char surname[50];
-};
-
-
-void print_person(struct Person p) {
-	printf("p.age=%d p.year_of_birth=%d p.forename=%s p.surname=%s\n", p.age, p.year_of_birth, p.forename, p.surname);
-}
-
-
-int main() {
-	struct Person p;
-
-	printf("Enter age: "); scanf("%d", &p.age);
-	printf("Enter birth year: "); scanf("%d", &p.year_of_birth);
-	printf("Enter forename: "); scanf("%29s", p.forename);
-	printf("Enter surname: "); scanf("%49s", p.surname);
-
-	print_person(p);
-	return 0;
-}

C19/ex4.c

@@ -1,50 +0,0 @@
-#include <stdio.h>
-
-
-struct Person {
-	int age;
-	int year_of_birth;
-	char forename[30];
-	char surname[50];
-};
-
-
-void print_person(struct Person p) {
-	printf("p.age=%d p.year_of_birth=%d p.forename=%s p.surname=%s\n", p.age, p.year_of_birth, p.forename, p.surname);
-}
-
-
-int main() {
-	struct Person p;
-	FILE *fp;
-	char choice;
-	char filename[4097];
-
-	printf("Read or write a file? (r/w) "); scanf("%c", &choice);
-
-	if (choice == 'w') {
-		printf("Enter age: "); scanf("%d", &p.age);
-		printf("Enter birth year: "); scanf("%d", &p.year_of_birth);
-		printf("Enter forename: "); scanf("%29s", p.forename);
-		printf("Enter surname: "); scanf("%49s", p.surname);
-
-		printf("Enter filename to save to: "); scanf("%4096s", filename);
-		fp = fopen(filename, "wb");
-		if (fp == NULL) {
-			printf("Failed to open file for writing\n");
-			return 1;
-		}
-		fwrite(&p, 1, sizeof(p), fp);
-	} else {
-		printf("Enter file to read from: "); scanf("%4096s", filename);
-		fp = fopen(filename, "rb");
-		if (fp == NULL) {
-			printf("Failed to open file for reading\n");
-			return 1;
-		}
-		fread(&p, 1, sizeof(p), fp);
-	}
-
-	print_person(p);
-	return 0;
-}

C19/static_variable_example.c

@@ -1,26 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-void DisplayHelloWorld (void)
-{
-    static int k = 0;       // Counter for how many times the function is called
-
-    printf ("Hello World\n");
-
-    // Increment counter and display value
-    k = k + 1;
-    printf ("I have now said this %d times\n",k);
-}
-// Main () - execution starts here
-int main (void)
-{
-    int i;
-
-    // Loop calling out function 10 times
-    for ( i =0 ; i < 10 ; i++ )
-    {
-        DisplayHelloWorld();
-    }
-
-    return (0);     // Exit indicating success
-}

C20/ConditionalDirective/conditional_directive_example.c

@@ -1,15 +0,0 @@
-#include <stdio.h>  
-#include <conio.h>  
-
-#define DEBUG_ON 0
-
-int main(void) 
-{  
-#if DEBUG_ON == 1
-	printf("Debug mode - about to do something\n");  
-#else  
-	printf("Running in standard mode");  
-#endif  
-	
-	return 0;
-}

C20/FormattingDirective/formatting_directive_example.c

@@ -1,15 +0,0 @@
-#include <stdio.h>  
-#include <conio.h>  
-
-//#define DEBUG_ON 0
-
-int main(void) 
-{  
-#ifdef DEBUG_ON 
-	printf("Debug mode - about to do something\n");  
-#else  
-	printf("Running in standard mode");  
-#endif         
-
-return 0;
-} 

C20/macro_function_example.c

@@ -1,8 +0,0 @@
-#include <stdio.h>  
-#define MIN(a,b) ((a)<(b)?(a):(b))  
-
-int main(void) 
-{  
-   printf("The minimum value of 10 and 20 is: %d\n", MIN(10,20));    
-   return 0;
-}

C21/sprintf_example.c

@@ -1,19 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main()
-{
-    int i;
-    char FileName[100];
-
-    for ( i = 1 ; i < 10 ; i++)
-    {
-        //'Print' text into string
-        sprintf(FileName , "file%d.dat" , i);
-
-        // Sidplay the name created
-        printf("Current file name: %s\n", FileName);
-    }
-
-    return 0;
-}

C3/hello_world.c

@@ -1,10 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
- 
-/* My first program */
-int main(void)
-{
-  // This is a single line of comment
-  printf("Hello World\n");
-  return 0;
-}

C4/Correct_answer/correct_answer.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare and initialise as required
-    int a = 1,b = 4;
-    float ans;
-
-    // Perform calculation 
-    // This time a & b are  treated as if they are floats
-    // the result of this float calculation is stored in ans
-    ans = (float)a / (float)b;
-
-    // Display answer
-    printf ("\nThe answer is %f",ans);
-
-    return 0;
-
-}

C4/Wrong_answer/wrong_answer.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare and initialise as required
-    int a = 1,b = 4;
-    float ans;
-
-    // Perform calculation 
-    // a and b are integers so the answer will be the result of the integer division
-    
-    ans = a / b;
-
-    // Display answer
-    printf ("\nThe answer is %f",ans);
-
-    return 0;
-
-}

C4/declare_a_string.c

@@ -1,13 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-int main(void)
-{
-	// A variable to store a name (maximum 49 characters)
-	char Name[50];
-    
-	// Declare multiple strings on the same line 
-	char AddressLine1[100], AddressLine2[100], PostCode[10];
-
-	// all done
-	return 0;
-}

C4/difficult_to_read_code.c

@@ -1,4 +0,0 @@
-#include <stdio.h>
-int main(void) { int revenue = 80; int cost = 50; int roi; 
-roi = (100 * (revenue - cost)) / cost; if (roi >= 0) { 
-printf ("%d\n", roi); } return 0; }

C4/poor_layout/poor_layout.c

@@ -1,4 +0,0 @@
-#include <stdio.h>
-
- /* My first program */
-int main(void) { printf("Hello World");  return 0; }

C4/reformatted_code.c

@@ -1,19 +0,0 @@
-#include <stdio.h>
-int main(void) 
-{
-	// Declare variables and give initial values 
-	int revenue = 80;
-	int cost = 50;
-	int roi;
-	
-	// Perform calculation
-	roi = (100 * (revenue - cost)) / cost;
-	
-	// Make decision based on value of roi
-	if (roi >= 0) 
-	{
-		printf ("%d\n", roi);
-	}
-
-	return 0;	// Exit indicating success
-}

C4/simple_claculation.c

@@ -1,8 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-int main(void)
-{
-    int a = 6,b = 7,c; // Declare and initialiase as required
-    c = a + b;         // Add the values and store in c
-
-}

C4/well_laid_out_code.c

@@ -1,8 +0,0 @@
-#include <stdio.h>
-
-/* My first program */
-int main(void)
-{
-  printf("Hello World");
-  return 0;
-}

C5/FormattingNumbers/formatting_numbers.c

@@ -1,24 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int a = 123;
-    float f = 12.456f;
-
-    // Use printf display text on the screen
-    printf ("Examples of integer formatting\n");
-    printf ("a = %d (no modifier)\n", a);
-    printf ("a = %6d (w:6, justify:right)\n", a);
-    printf ("a = %-6d (w:6 )\n", a);
-
-    // Use printf display text on the screen
-    printf ("Examples of float formatting\n");
-    printf ("f = %f (no modifier)\n", f);
-    printf ("f = %6.2f (w:6, 2dp, justify:right)\n", f);
-    printf ("f = %-6.1f (w:6, 1dp)\n", f);
-
-    // Exit from main
-    return 0;
-}

C5/displaying_variables.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int a = 1, b = 2;
-    float f = 1.23f;
-
-    // Use printf display text on the screen
-    printf ("The variables are\na = %d\nb=%d\nf=%f", a, b, f);
-
-    // Exit from main
-    return 0;
-}

C5/ex4.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-int main() {
-	float r;
-	printf("Enter radius: ");
-	scanf("%f", &r);
-
-	printf("Area of sphere: %f\n", 4.0*M_PI*r*r);
-	printf("Volume of sphere: %f\n", M_PI*r*r*r*4.0/3.0);
-}

C5/ex5.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-int main() {
-	float r;
-	printf("Enter radius: ");
-	scanf("%f", &r);
-
-	printf("Area of circle: %0.2f\n", M_PI*r*r);
-	printf("Volume of sphere: %.02f\n", M_PI*r*r*r*4.0/3.0);
-}

C5/not_displaying.c

@@ -1,17 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-
-    // Declare some variables
-    int a = 1, b = 2;
-    float f = 1.23f;
-
-    // Use printf display text on the screen
-    printf ("The variables are a, b and f");
-
-    // Exit from main
-    return 0;
-
-}

C5/printf_example_1.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{ 
-    
-    printf ("This is my first computer program"); 
-    printf ("Hello World");
-
-    return 0;
-
-}

C5/printf_example_2.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    
-    printf ("This is my first computer program\n");
-    printf ("Hello World\n");
-
-    return 0;
-
-}

C6/ex1.c

@@ -1,28 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int  a, b;
-
-    // Note: Order of a,b indicates the order in which operations are carried out on execution
-    
-    // Increment operators
-    b = 3;
-    printf("a=%d b=%d\n", a, b);
-    a = ++b;    // b is now 4, a is also 4
-    printf("a=%d b=%d\n", a, b);
-    a = b++;    // a is 4, b is now 5, 
-    printf("a=%d b=%d\n", a, b);
-    
-    // Decrement operators (reset a back to 3)
-    b = 3;
-    printf("a=%d b=%d\n", a, b);
-    a = b--;    // a is 3, b is now 2    
-    printf("a=%d b=%d\n", a, b);
-    a = --b;    // b is now 1, a is also 1
-    printf("a=%d b=%d\n", a, b);
-    
-    return 0;	// Exit from main
-}

C6/ex2.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	unsigned int a = 60;
-	unsigned int b = 13;
-	unsigned int r;
-
-	r = a & b;
-	printf("bitwise AND of 60 and 13: %d\n", r);
-	r = a | b;
-	printf("bitwise OR of 60 and 13: %d\n", r);
-	r = a ^ b;
-	printf("bitwise XOR of 60 and 13: %d\n", r);
-}

C6/ex3.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	unsigned int a = 0x60;
-	unsigned int b = 0x13;
-	unsigned int r;
-
-	r = a & b;
-	printf("bitwise AND of 0x60 and 0x13: 0x%02x\n", r);
-	r = a | b;
-	printf("bitwise OR of 0x60 and 0x13: 0x%02x\n", r);
-	r = a ^ b;
-	printf("bitwise XOR of 0x60 and 0x13: 0x%02x\n", r);
-}

C6/inc_dec_examples.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int  a, b;
-
-    // Note: Order of a,b indicates the order in which operations are carried out on execution
-    
-    // Increment operators
-    b = 3;
-    a = ++b;    // b is now 4, a is also 4
-    a = b++;    // a is 4, b is now 5, 
-    
-    // Decrement operators (reset a back to 3)
-    b = 3;
-    a = b--;    // a is 3, b is now 2    
-    a = --b;    // b is now 1, a is also 1
-    
-    return 0;	// Exit from main
-}

C7/Getchar/getchar_example.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // declare variable
-    char c;
-
-    printf("Input a character: ");
-    // Wait for a kepypress, store result in c
-    c = getchar();
-
-    // Display on the screen using printf
-    printf ("The charcter pressed was %c\n", c);
-
-    // Display the charcter using putchar()
-    putchar(c);
-    
-    return 0;	    // Exit from main
-}

C7/Scanf1/scanf_example_1.c

@@ -1,28 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    int a;		    // Declare some variables
-    float f;
-
-    // Use printf to prompt the use to enter an integer
-    printf ("Please enter an integer\n");
-    
-    // use scanf with %d to read into 'a' 
-    scanf ("%d",&a);	// note the important & 
-    
-    // And display on the screen
-    printf ("The value you entered for a is %d\n", a);
-    
-	// Use printf to prompt the use to enter an float
-    printf ("Please enter a float\n");
-    
-    // use scanf with %f to read into 'f' 
-    scanf ("%f",&f);  // note the important & 
-    
-    // And display on the screen
-    printf ("The value you entered for f is %f\n", f);
-
-    return 0;     // Exit from main
-}

C7/Scanf2/scanf_example_2.c

@@ -1,28 +0,0 @@
-#include <stdio.h>
-
-int main(void)
-{
-    // Declare some variables
-    int a,b,c;
-    float f,g;
-
-    // Use printf to prompt the use to enter 3 integers
-    printf ("Please enter three integer\n");
-    
-    // use scanf with %d to read into a, b and c
-    scanf ("%d %d %d",&a, &b, &c);	// note the important & 
-    
-    // And display on the screen
-    printf ("The values entered were %d %d %d\n", a, b, c);
-    
-	// Use printf to prompt the use to enter an float
-    printf ("Please enter two floats\n");
-    
-	// use scanf with %f to read into f ang g
-    scanf ("%f %f",&f, &g);  // note the important & 
-    
-	// And display on the screen
-    printf ("The value you entered were %f and %f \n", f,g);
-    
-    return 0;	// Exit from main
-}

C7/ex2.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-int main() {
-	float r;
-	printf("Enter radius: ");
-	scanf("%f", &r);
-
-	printf("Area of circle: %f\n", M_PI*r*r);
-	printf("Volume of sphere: %f\n", M_PI*r*r*r*4.0/3.0);
-}

C7/ex3.c

@@ -1,13 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-int main() {
-	float radius, height;
-
-	printf("Enter radius: ");
-	scanf("%f", &radius);
-	printf("Enter height: ");
-	scanf("%f", &height);
-
-	printf("Surface area: %f\n", 2*M_PI*radius*radius + 2*M_PI*radius*height);
-}

C7/ex4.c

@@ -1,11 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	char name[200] = { 0 };
-
-	printf("What is your name? ");
-	scanf("%s", name);
-
-	printf("Hello %s\n", name);
-
-}

C7/ex5.c

@@ -1,15 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	char name[200] = { 0 };
-	int age = 0;
-
-	printf("What is your name? ");
-	scanf("%s", name);
-
-	printf("What is your age? ");
-	scanf("%ud", &age);
-
-	printf("Hello %s\nYou are %d years old\n", name, age);
-
-}

C7/string_with_gets.c

@@ -1,19 +0,0 @@
-#include <stdio.h> 
-#include <stdlib.h>
-int main() 
-{ 
-	// Declare variable - maximum 99 characters
-    char str[100]; 
-    
-    // Prompt for text
-    printf("enter some text\n"); 
-    
-    // Store intput in str 
-    gets(str); 
-    
-    // Display a message on the screen
-    printf("you entered : %s\n", str); 
-    
-    // Exit from main
-    return 0; 
-} 

C7/string_with_scanf.c

@@ -1,20 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    char name[50];
-
-    // Wait for a kepypress, store result in c
-    printf ("Please enter your name");
-
-    // read in using scanf with %s
-    scanf ("%s",name);
-
-    // Display on the screen using printf
-    printf ("Hello %s\n", name);
-
-    // Exit from main
-    return 0;
-}

C8/ex2.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	int input;
-
-	printf("Enter an integer: ");
-	scanf("%d", &input);
-
-	if (input >= 0 && input <= 10) {
-		printf("The number is in range\n");
-	}
-
-	return 0;
-}

C8/ex3.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	int input;
-
-	printf("Enter an integer: ");
-	scanf("%d", &input);
-
-	if (!(input >= 0 && input <= 10)) {
-		printf("The number is not in range\n");
-	}
-
-	return 0;
-}

C8/ex4.c

@@ -1,21 +0,0 @@
-#include <stdio.h>
-
-int main() {
-	int age;
-
-	printf("Enter your age: ");
-	scanf("%d", &age);
-
-	// c only matches one branch so don't need to specify lower limits of each age range
-	if ( age <= 0 ) {
-		printf("Still a baby\n");
-	} else if ( age <= 12 ) {
-		printf("The junior years\n");
-	} else if ( age < 20 ) {
-		printf("Teenage years\n");
-	} else {
-		printf("Downhill all the way now!\n");
-	}
-
-	return 0;
-}

C8/ex7.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-
-int main() {
-	int rc; // used to check return codes of scanf
-	float radius, height;
-
-	printf("Enter radius: ");
-	rc = scanf("%f", &radius);
-	// scanf returns number of scanned items. If input is invalid then 0 values will have been scanned.
-	if (rc != 1) {
-		printf("Please enter an positive real integer or decimal\n");
-		return 1;
-	}
-
-	printf("Enter height: ");
-	rc = scanf("%f", &height);
-	// scanf returns number of scanned items. If input is invalid then 0 values will have been scanned.
-	if (rc != 1) {
-		printf("Please enter an positive real integer or decimal\n");
-		return 1;
-	}
-
-	printf("Surface area: %f\n", 2*M_PI*radius*radius + 2*M_PI*radius*height);
-}

C8/if_example.c

@@ -1,27 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-	// Declare some variables
-	int  a = 7, b=6;
-
-	printf("Enter a value for a: ");
-	scanf("%d", &a);
-	printf("Enter a value for b: ");
-	scanf("%d", &b);
-
-	// A single line of code conditional on the value of a
-	if ( a == 7 )
-	   printf ("The value of a is 7 - so I will do this\n");
-	   
-	// Multiple lines of code conditional on b not equalling 4
-	// so then need to be placed inside { and }
-	if ( b != 4 )
-	{
-	   printf ("The value of b is not 4\n");
-	   printf ("So I will do multiple tasks\n");
-	}
-	   
-	return 0;   // Exit from main
-}

C8/switch_example_1.c

@@ -1,29 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int a = 1;
-    switch ( a )
-    {
-    case 0 :
-        printf ("Sunday\n");
-        break ; // end of the lines of code to execute
-
-    case 1:
-        printf ("Monday\n");
-        break ; // end of the lines of code to execute
-
-    case 2:
-        printf ("Tuesday\n");
-        break ; // end of the lines of code to execute
-
-    // etc...
-
-    default: // If no case is met (OPTIONAL)
-        printf ("\nThe value supplied is out of range\n");
-
-    }
-    return 0;
-}

C8/switch_example_2.c

@@ -1,25 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-	// Declare some variables
-	int a = 1;
-	switch ( a )
-	{
-	case 1 :
-	case 2 : 
-	case 3 : 
-		// Code to do if a is 1, 2 or 3
-	break ; // end of the lines of code to execute
-
-	case 4:
-	case 5:
-		// Code to do if a is 4 or 5
-		break ; // end of the lines of code to execute
-
-	default: // If no case is met (OPTIONAL)
-		// Code to do if no case is met
-	}
-	return 0;
-}

C8/switch_example_3.c

@@ -1,23 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-    // Declare some variables
-    int a = 1;
-    switch ( a )
-    {
-    case 1 :
-        printf ("This is case 1\n");
-    case 2 :
-        printf ("This is case 2\n");
-    case 3 :
-        printf ("This is case 3\n");
-        break ; // end of the lines of code to execute
-
-    default: // If no case is met
-        printf ("This default case\n");
-        // Code to do if no case is met
-    }
-    return 0;
-}

C9/do_while_loop.c

@@ -1,24 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-	int age;		// Declare variable, no need to initialise this time 
-					// as we read into it before it is tested against
-    
-    // The loop is always entered as the test is at the end
-    do 
-    {
-        // Code must be executed at least once
-        printf ("\nPlease enter your age");
-        scanf("%d", &age);
-        printf ("You are %d years old\n", age);    
-        
-        // Test is now made and the code 
-        // repeats if the test equates as non-zerp
-        // (i.e. is age is not zero)
-    }
-    while ( age != 0);
-    
-    return 0;
-}

C9/ex2.c

@@ -1,23 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void)
-{
-   	int age = 1;  			// Declare variable and initialise to 1
-    
-    while ( age != 0)	    // Loop as long as age is not zero
-    {
-        // Code in {} executed if condition is true (non-zero)
-        
-        printf ("\nPlease enter your age: ");
-        scanf("%d", &age);
-        printf ("You are %d years old\n", age);
-
-	if (age == 18 || age == 21) {
-		printf("You have come of age\n");
-	}
-        
-        // Code  now goes back and repeats the test with the value of age just entered
-    }
-    return 0;	// Exit code
-}

C9/ex3.c

@@ -1,14 +0,0 @@
-#include <stdio.h>
-
-#define MAX_NAME_LEN 200
-
-int main() {
-	char name[MAX_NAME_LEN] = { 0 };
-
-	printf("Please enter your name: ");
-	scanf("%s", name);
-
-	while (1) {
-		printf("%s\n", name);
-	}
-}