习题7.1

#include 
int square(int i) 
{
    return i*i; 
}
int main()
{
    int i=0;
    i=square(i);
    for (;i<3;i++)
    {
        static int i=1;
        i+=square(i);
        printf ("%d,",i);
    }
    printf ("%d\n",i);
    return 0;
}