#include <stdio.h>

int setvars(int *, int *);

int main(int argc, char **argv)
{
        int *a;
        int *b;         

        int result = 0;
        int x, y;
        a=&x;
        b=&y;

        /* which one is the better one of these two ? */
        /* result = setvars(a,b);       */
         result = setvars(&x,&y);

        if (result == 0) {
          printf("setvars: %d - %d\n", *a, *b);
          return 0;
        } else
          return -1;
}

int setvars(int *a, int *b)
{
        if ((a) && (b) ) {
                printf("b: %p", &b);
                *a = 10;
                *b = 11;
        return 0;
        } else
                return -1;
}