#include<stdio.h>
int *func()
{
    static int d;
    return &d;
}

int main()
{
    int i;

    *(func()) = 123;
    i = *(func());
    printf("%d\n", i);

    *(func()) = 321;
    i = *(func());
    printf("%d\n", i);

    return 0;
}