题解 | #数字之和#

#include <iostream>
using namespace std;

int main() {
    int a,sum=0,sq,sqsum=0;
    while (cin >> a) { // 注意 while 处理多个 case
        sq = a * a; //平方
        while (a != 0){
            sum += a%10;	//数字各位累和
            a /= 10;
        }
        while (sq != 0){
            sqsum += sq%10;	//平方各位累和
            sq /= 10;
        }
        cout << sum <<" "<< sqsum << endl;
    }
}