Why this doesn't work?

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

static int ans = 0;

void add_input (
        int     A,
        int     B)
{
        ans = A + B;
}

int main (
        int     argc,
        char    *argv[])
{
        int A;
        int B;

        A = atoi (argv[1]);
        B = atoi (argv[2]);

        add_input (A, B);
        fprintf (stdout, "%d", ans);
        exit (EXIT_SUCCESS);
}

gcc -g a_b.c -o a_b

Edited by author 24.04.2008 21:15

Edited by author 24.04.2008 21:15

you must to read A and B from standart input,
not from console parameters.

int main()
{
   int a, b;
   scanf("%d %d", &a, &b);
   printf("%d\n", a + b);
   return 0;
}