#include <iostream>
using namespace std;
int main()
{
int a, b, sum;
do
{
cin >> a >> b;
if (a >= b) break;
sum = 0;
for (int i = a; i <= b; i++)
sum += i * i;
cout << a * a << " to " << b * b << " is " << sum << endl;
} while (a < b);
cout << "Done";
}
不知道你这个问题是否已经解决, 如果还没有解决的话: