Changes to file structure for VSCode and bug fixes

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;
-}