Help with GCC compile in C89 [closed]

Question

I have to compile code in C89 for class, I wrote this code to see if it would compile. I compile it using,

gcc -std=c89 -pedantic

#include<stdio.h>

int main(void)
{
    int number;

    printf("%p", &number);
}

this code would compile just fine on a system with gcc version 4.1.2, but on a machine with version 5.3(Ubuntu 5.3), it would give me the error

warning:format '%p' expects argument of type 'void *', but argument 2 has type 'int *' [-Wformat=]

If anyone can give me a work around I would really appreciate it. Thank you

Answer 1

%p expects a void *, so casting to void * will do the trick.

#include <stdio.h>

int main(void)
{
    int number;

    printf("%p", (void *)&number);
}