cpp: 读取输入中的多个数字

• cpp 中，如何读取一行中的前两个数字，并且丢弃后面的内容？

#include<stdio.h>#include <iostream>double adjustSum(int, int);using namespace std;int main(void) {    int m, n;    cout << "# input two numbers n,m (0 to quit):";    while ((cin >> m) && m != 0 && (cin >> n) && n != 0) {        while (cin.get() != '\n')continue; // 丢弃多余输入        cin.clear();        double sum = adjustSum(m, n);        cout << "adjustSum(" << m << "," << n << ")=" << sum << endl;        cout << "# input two numbers n,m (0 to quit):";    }    return 0;}double adjustSum(int m, int n) {    return 2.0 * m * n / (m + n);}

输出：

 # input two numbers n,m (0 to quit):1 2 3 4 5 6 7 sdwddadjustSum(1,2)=1.33333

 # input two numbers n,m (0 to quit):0