int print_string(char *);
int print_int(int);

/*
 * Some basic structure testing.
 */
struct item {
    int index;
    char data[10];
};


struct item f(struct item a)
{
    a.index++;
    a;
}

int print_struct(char *s, struct item *p)
{
    print_string(s);
    print_string(".index=");
    print_int(p->index);
    print_string("\n");
}

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

    a.index = 1;
    print_struct("a", &a);
    print_struct("b", &b);
    b = f(a);
    print_struct("a", &a);
    print_struct("b", &b);
    0;
}