#include <stdio.h>

int main(void)
{
    char *a = "abc";
    char *b = "123";

    printf("%s, %s", a, b);

    int *ptr1;
    int *ptr2;

    int nb1;
    int nb2;

    *ptr1 = nb1;
    *ptr2 = nb2;

    printf("%p, %p", ptr1, ptr2);

    return (0);
}