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Introduction [cont'd]
Input Output Functions [cont'd]
Structures and Unions [cont'd]
# Preprocessor [cont'd]
Free in Memory of Programming in C
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Free 
Free is used to free already allocated memory space.
Syntax 
free(pointer_variable);
Program
	#include
	void main(){
	   int *ptr;
	   int i;
	   //Allocates memory for pointer variable 5 * 2 (10) bytes
	   ptr = (int *) malloc(5 * sizeof(int));
	   for (i=0;i<5;i++){
	       printf("Enter a number : ");
	       scanf("%d",(ptr+i));
	   }
	    for (i=0;i<5;i++){
	       printf("\t%d",*(ptr+i));
	   }
	   //Free the pointer variable memory
	   free(ptr);
	}
Output 
Enter a number
45
Enter a number
23
Enter a number
67
Enter a number
98
Enter a number
45

45 23 67 98 45
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