Question

How many bytes of memory will the following code reserve?

Answer 1

#include<stdio.h>
#include<stdlib.h>

int main()
{
int *p;
p = (int *)malloc(256 * 256);
if(p == NULL)
printf("Allocation failed");
return 0;
}
A. 65536 B. Allocation failed
C. Error D. No output

Answer 2

B is the ans.
as,
Hence 256*256 = 65536 is passed to malloc() function which can allocate upto 65535. So the memory allocation will be failed in 16 bit platform (Turbo C in DOS).

If you compile the same program in 32 bit platform like Linux (GCC Compiler) it may allocate the required memory.

Answer 3

Thanks