C Program to demonstrate malloc dynamic memory allocation

Program

#include<stdio.h>
#include<stdlib.h>
int main()
{
    int *p;
    printf("Pointer before memory allocation is:\t%p\n", p);
    p = (int *)malloc(sizeof(int));
    printf("Pointer after memory allocation is:\t%p\n", p);
}

Output

$ gcc malloc-dynamic-memory-allocation.c 
$ ./a.out
Pointer before memory allocation is:    (nil)
Pointer after memory allocation is:     0x55d838d6c670