MEMORY ALLOCATION - free()

Published: 16 April 2020
on channel: Solution Manual

// 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;
}

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