求大神解答第二题～～～

Question

 

Answer 1

int fun(x,y)
{
    long n = 1;
    for(int i=0;i<y;i++)
        n*=x;
    return n%1000;
}

void main()
{
    int x,y;
    scanf("%d %d",&x,&y);
    int n = fun(x,y);
    printf("%d的%d次方的后三位为:%d\n",x,y,n);
}