Changes to file structure for VSCode and bug fixes

C17/ArraysToFunctions1/arrays_to_functions_example_1.c

@@ -13,7 +13,7 @@ void PopulateTheArray ( int Size, int ArrayData[])
 }
 
 
-// Simple function do display contents an integer array
+// Simple function to display contents of an integer array
 void DisplayTheArray ( int Size, int ArrayData[])
 {
     int i;      // Variable to use in our loop

C18/TextFile/numbers.txt

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

C20/ConditionalDirective/conditional_directive_example.c

@@ -1,14 +1,14 @@
 #include <stdio.h>  
 #include <conio.h>  
 
-#define DEBUG_ON 1  
+#define DEBUG_ON 0
 
 int main(void) 
 {  
 #if DEBUG_ON == 1
 	printf("Debug mode - about to do something\n");  
 #else  
-	print("Running in standard mode");  
+	printf("Running in standard mode");  
 #endif  
 	
 	return 0;

C20/FormattingDirective/formatting_directive_example.c

@@ -1,14 +1,14 @@
 #include <stdio.h>  
 #include <conio.h>  
 
-#define DEBUG_ON 1  
+//#define DEBUG_ON 0
 
 int main(void) 
 {  
 #ifdef DEBUG_ON 
 	printf("Debug mode - about to do something\n");  
 #else  
-	print("Running in standard mode");  
+	printf("Running in standard mode");  
 #endif         
 
 return 0;

LC15/PointerToArray1/pointer_to_array_1.c

@@ -19,15 +19,6 @@ int main(void) // Main : Execution starts here...
     for  ( i = 0 ; i < 10 ; i++ )
         printf ("Item %d contains value %d\n", i, pArray[i] );
 
-    printf ("Pointer method 1\n");
-    for  ( i = 0 ; i < 10 ; i++ )
-        printf ("Item %d contains value %d\n", i, *(pArray+i) );
-
-    printf ("Pointer method 2 (only works for moving sequentially\n");
-    for  ( i = 0 ; i < 10 ; i++ )
-        printf ("Item %d contains value %d\n", i, *pArray++ );
-
-
     // Exit the application
     return 0;
 }

LC15/PointerToArray2/pointer_to_array_2.c

@@ -19,7 +19,7 @@ int main(void) // Main : Execution starts here...
     for  ( i = 0 ; i < 10 ; i++ )
         printf ("Item %d contains value %d\n", i, pArray[i] );
 
-    printf ("Pointer method 1\n");
+    printf ("Pointer method 2 using index\n");
     for  ( i = 0 ; i < 10 ; i++ )
         printf ("Item %d contains value %d\n", i, *(pArray+i) );
 
@@ -27,7 +27,6 @@ int main(void) // Main : Execution starts here...
     for  ( i = 0 ; i < 10 ; i++ )
         printf ("Item %d contains value %d\n", i, *pArray++ );
 
-
     // Exit the application
     return 0;
 }

LC16/Dynamic1/Dynamic1.c

@@ -17,7 +17,7 @@
 int main(void)
 {
    int *ipArray = NULL;         /* Create the pointer and set   */
-				/* to null to start with        */
+	 /* to null to start with        */
    int iSize = 0;               /* Define our 'size' variable   */
 
    int i;                       /* A Loop variables             */

LC16/Dynamic3/Dynamic3.c

@@ -47,6 +47,7 @@ int main(void)
    for ( i = 0 ; i < iSize ; i++ )
      *ipArray++ = iSize - i;
      
+
    /* Reset the pointer to the origin of the array */
    ipArray = ipStartValue;
 

LC17/DynamicFunction/DynamicFunction.c

@@ -59,10 +59,12 @@ int main(void)
     /* Store the base memory address for use later */
     ipStartValue = ipArray;
 
-    /* Populate the array (Method 2 - Use Pointers: This is much faster !) */
+    /* Populate the array ( Use Pointers: This is much faster !) */
     for ( i = 0 ; i < iSize ; i++ )
-        ipArray[i] = i;
+        *ipArray++ = i;
         
+    // Reset ipArray to start
+    ipArray = ipStartValue;
     /* Display the sum of the values in the array */
 
     printf("\nThe sum of the array values is %d ",Sum(ipArray,iSize) );

LC18/EndOfFile/EndOfFile.c

@@ -0,0 +1,55 @@
+#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
+    while (!feof(fInput))
+    {
+        fscanf (fInput, "%d", &d);
+        printf ("Value read from file %d\n",d);
+    }
+
+    // And close the file
+    fclose (fInput);
+
+    return (0);     // Exit indicating success
+}

LC18/EndOfFile/numbers.txt

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

LC18/EndOfFileBreak/EndOfFileBreak.c

@@ -0,0 +1,57 @@
+#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
+    while (1)
+    {
+        fscanf (fInput, "%d", &d);
+        if ( feof(fInput))
+            break;
+        printf ("Value read from file %d\n",d);
+    }
+
+    // And close the file
+    fclose (fInput);
+
+    return (0);     // Exit indicating success
+}

LC18/EndOfFileBreak/numbers.txt

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

LC18/EndOfFileScanf/EndOfFileScanf.c

@@ -0,0 +1,54 @@
+#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
+    while (fscanf (fInput, "%d", &d) != EOF)
+    {
+        printf ("Value read from file %d\n",d);
+    }
+
+    // And close the file
+    fclose (fInput);
+
+    return (0);     // Exit indicating success
+}

LC18/EndOfFileScanf/numbers.txt

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

LC18/FileMove/filemove.c

@@ -30,10 +30,13 @@ int main(void)
 	 fseek (fptr, Locn, SEEK_SET);
 	 
 	 /* And read a single integer in */
-	 fread (&ValRead, sizeof(int), 1, fptr );
-	 
-	 /* Display the read value */
-	 printf ("Item %d is %d\n",Item,ValRead);
+	 if (fread (&ValRead, sizeof(int), 1, fptr ) == 1)
+	 {
+		/* Display the read value */
+		printf ("Item %d is %d\n",Item,ValRead);
+	 }
+	 else
+	 	printf("Failed to read at location %d\n", Item);
 								   
 	 /* And close */
 	 fclose (fptr); 

LC18/FileSize/filesize.c

@@ -3,7 +3,7 @@
 
 /* Example 3 - jumping & getting element count */
 
-main()
+int main()
 {
 
  long FileBytes;
@@ -27,7 +27,7 @@ main()
  FileBytes = FileBytes / sizeof(int);
  
  /* Display the read value */
- printf ("No. of items in file is %d\n",FileBytes);
+ printf ("No. of items in file is %ld\n",FileBytes);
                                
  /* And close */
  fclose (fptr); 

LC19/ConstHashDefine/ConstHashDefine.c

@@ -6,6 +6,8 @@
 //global integer constant
 const int Y = 10;
 
+void func();
+
 int main()
 {
 	//local integer constant`
@@ -15,11 +17,17 @@ int main()
 	printf("Value of Y: %d\n", Y);
 	printf("Value of Z: %d\n", Z);
 
-//	#undef X
-//	#define X 300
-//	printf("Value of X: %d\n", X);
+	func();
 
-//  Y = 30;
+  	//Y = 30;
+	Z = 40;
 
 	return 0;
 }
+
+void func()
+{
+	int Z = 40;
+	printf("Value of Z in function = %d\n", Z);
+	//Y = 30;
+}

LC19/FileHeader/file_header.c

@@ -55,11 +55,11 @@ int main()
 
  /* Update the values in the structure */
  MyRecord.NoItems = items;
- MyRecord.NoItems = (float)sum / (float)items;
+ MyRecord.average = (float)sum / (float)items;
 
  /* rewind the file to write the structure again */
  fseek(fptr, SEEK_SET, 0);
- rewind (fptr);
+ //rewind (fptr);   // This is an alternative to the previous line
 
  /* This line does the writing of the structure */
  fwrite ( &MyRecord, sizeof(struct MyStruct), 1, fptr);

LC19/Structure2/Structure_2.c

@@ -13,7 +13,7 @@ int main(void)
 
    struct DataSet	MyPoints[5];	/* Define array of structure,   */
 					/* 	type DataSet 		*/
-					/*	Elements : 10 		*/
+					/*	Elements : 5 		*/
 
    int i;				/* Define an integer */
 
@@ -21,17 +21,17 @@ int main(void)
 
    for ( i = 0 ; i < 5 ; i++ )		/* Populate structure */
    {
-	MyPoints[i].x = i;
-	MyPoints[i].y = i*i;
+      MyPoints[i].x = i;
+      MyPoints[i].y = i*i;
    }
 
    printf("\nThe dataset values are ");	/* Display message & Values */
 
    for ( i = 0 ; i < 5 ; i++ )
    {
-	printf("\n\t Set %d : ",i);
-	printf("\t X = %d ",MyPoints[i].x);
-	printf("\t Y = %d ",MyPoints[i].y);
+      printf("\n\t Set %d : ",i);
+      printf("\t X = %d ",MyPoints[i].x);
+      printf("\t Y = %d ",MyPoints[i].y);
    }
 
 

LC19/Structure3/Structure_3.c

@@ -25,23 +25,23 @@ int main(void)
 
    for ( i = 0 ; i < 5 ; i++ )		/* Populate structure */
    {
-	MyPoints[i].x = i;
-	MyPoints[i].y = i*i;
+      MyPoints[i].x = i;
+      MyPoints[i].y = i*i;
    }
 
    printf("\nThe dataset values are ");	/* Display message & Values */
 
    for ( i = 0 ; i < 5 ; i++ )
    {
-	printf("\n\t Set %d : ",i);
-	printf("\t X = %d ",MyPoints[i].x);
-	printf("\t Y = %d ",MyPoints[i].y);
+      printf("\n\t Set %d : ",i);
+      printf("\t X = %d ",MyPoints[i].x);
+      printf("\t Y = %d ",MyPoints[i].y);
    }
 
    /* Make a copy of the data */
 
    for ( i = 0 ; i < 5 ; i++ )
-	CpPoints[i] = MyPoints[i];
+	   CpPoints[i] = MyPoints[i];
 
 
    /* And print it out again */
@@ -50,9 +50,9 @@ int main(void)
 
    for ( i = 0 ; i < 5 ; i++ )
    {
-	printf("\n\t Set %d : ",i);
-	printf("\t X = %d ",MyPoints[i].x);
-	printf("\t Y = %d ",MyPoints[i].y);
+      printf("\n\t Set %d : ",i);
+      printf("\t X = %d ",CpPoints[i].x);
+      printf("\t Y = %d ",CpPoints[i].y);
    }
 
    return 0;

LC19/StructureFunction/StructureFunc.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <math.h>
+
+struct Point			/* Define a struture called Point */
+{
+	int x;			/* The X data */
+	int y;			/* The Y data */
+};
+
+struct Line
+{
+    struct Point p1;
+    struct Point p2;
+    float length;
+};
+
+void LineLength( struct Line* line);
+
+int main()
+{
+    struct Line line;
+    line.p1.x = 0;
+    line.p1.y = 0;
+    line.p2.x = 3;
+    line.p2.y = 4;
+
+    LineLength( &line );
+    printf( "Line length = %.3f\n", line.length);
+}
+
+void LineLength( struct Line* line)
+{
+    float dx = line->p2.x - line->p1.x;
+    float dy = line->p2.y - line->p1.y;
+    line->length = sqrt( dx*dx + dy*dy );
+}

LC19/WriteHeader.c

@@ -1,77 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-struct MyStruct
-{
-    int NoItems;
-    int max;
-    float average;
-};
-
-int main()
-{
-
-    struct MyStruct MyRecord;
-    FILE *fptr;
-
-    int ArrayData[100];
-    int items = 0;
-    int sum = 0;
-    int i;
-
-
-
-    /* Write this file to disk - binary format, usual error checking */
-    fptr = fopen ("strdata.dat","wb");
-    if ( fptr == NULL )
-    {
-        printf ("\nError creating file - aborting ");
-        exit (0);
-    }
-
-    /* Populate the array & set header values*/
-    for ( i = 0 ; i < 100 ; i++)
-    {
-        ArrayData[i] = i;
-        if ( ArrayData [i] > MyRecord.max)
-            MyRecord.max = ArrayData[i];
-        sum = sum + ArrayData[i];
-        items++;
-    }
-
-    /* Update the values in the structure */
-    MyRecord.NoItems = items;
-    MyRecord.NoItems = (float)sum / (float)items;
-
-    /* This line does the writing of the structure */
-    fwrite ( &MyRecord, sizeof(struct MyStruct), 1, fptr);
-
-
-    /* This line does the writing of the Array */
-    fwrite ( &ArrayData[0],  sizeof(struct MyStruct),1, fptr);
-
-
-    /* And close */
-    fclose (fptr);
-
-    /* To read the data we would use */
-
-    fptr = fopen ("strdata.dat","rb");
-    if ( fptr == NULL )
-    {
-        printf ("\nError opening input file - aborting ");
-        exit (0);
-    }
-
-    /* This line does the reading */
-    fread ( &MyRecord, sizeof(struct MyStruct), 1, fptr);
-    printf ("No. items in the file = %d", MyRecord.NoItems);
-    printf ("Maximum = %d", MyRecord.max);
-    printf ("Average is = %.2f", MyRecord.average);
-
-    /* And close */
-    fclose (fptr);
-
-    /* All Done */
-    return 0;
-}

LC20/AreaFunc.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <math.h>
+
+
+float CalculateAreaOfCircle ( float radius )
+{
+	float area;
+	area = M_PI * radius * radius ;
+	return (area) ;
+}
+
+float CalculateSurfaceAreaOfCylinder ( float radius, float length )
+{
+	float area;
+	area = 2.0 * ( M_PI * radius * radius ) + ( M_PI * 2.0 * radius * length );       // two ends + side
+	return (area) ;
+}

LC20/AreaFunc.h

@@ -0,0 +1,2 @@
+float CalculateAreaOfCircle ( float radius );
+float CalculateSurfaceAreaOfCylinder ( float radius, float length );

LC20/Main.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include"AreaFunc.h"
+
+/* Show use of function  */
+int main (void)
+{
+	// Declare variables - no need to initialise as values will be read in / calculated
+	float rad, len, Area, SurfaceArea;
+
+	// Prompt for and obtain value
+	printf ("Please enter the raduis of the circle: ");
+	scanf ("%f", &rad);
+
+    printf ("Please enter the length of the cylinder: ");
+	scanf ("%f", &len);
+
+	// Calculate the area of the circle
+	Area = CalculateAreaOfCircle(rad);
+
+	// And display the answer on the screen
+	printf ("The area of a circle of radius %f is %f\n", rad, Area );
+
+	// Calculate the surface area of the cylinder
+	SurfaceArea = CalculateSurfaceAreaOfCylinder(rad, len);
+
+	// And display the answer on the screen
+	printf ("The surface area of a cylinder of radius %f and length %f is %f\n", rad, len, SurfaceArea );
+
+	// All done
+	return 0;
+}
+