MEMORY ALLOCATION - free()
// MEMORY ALLOCATION
//TOPIC : free() - - DEALLOCATION
// FIRST COPY PASTE ANY malloc() or calloc() PROGRAM
int main()
{
int i,n,*p;
printf("\n Enter the Number of Elements : \n");
scanf("%d",&n);
// MEMORY ALLOCATION USING CALLOC() FUNCTION
p=(int*)calloc(n,sizeof(int));
// TO PRINT THE ADDRESS OF MEMORY LOCATION
for(i=0;i lt n;i++)
{
printf("\nAddress of Location %d is :::::: \t %d\n",i,&p[i]);
}
// TO GET ELEMENTS FROM USER
for(i=0;i lt n;i++)
{
printf("\nEnter the Element \n");
scanf("%d",&*(p+i));
}
//PRINT THE ELEMENTS
printf("\n::::The Elements in Memory Location ::::");
for(i=0;i lt n;i++)
{
printf("\n%d\n",*(p+i));
}
// DEALLOCATION STARTS HERE
// USE FREE() FUNCTION ALONG WITH POINTER VARIABLE
free(p);
//NOW TRY TO PRINT THE ELEMENTS HERE
printf("\n::::The Elements in Memory Location AFTER DEALLOCATION::::");
for(i=0;i lt n;i++)
{
printf("\n%d\n",*(p+i));
}
// free function will release all memory
// OLDER VALUES WILL BE REPLACED BY GARBAGE VALUES
return 0;
}