所有输入的和

Posted 2020-08-24 愉快的一天

#include <iostream>
int main()
{
    int sum = 0, val = 0;
    while (std::cin >> val)
    {
        sum += val;
    }
    std::cout << "所有的数字的和是 -> " 
        << sum << std::endl;
    return 0;
}