c++ - For循环不太有效

Question

这是我第一次尝试 for 循环，我遇到了一些问题。我正在尝试编写一个程序，询问两支球队每节得分多少，然后显示总分和获胜球队。

#include <iostream>

using namespace std;

int main( )
{
    int scoreA = 0;
    int scoreB = 0;

    cout << "This program calculates the average score of 10 tests." << endl;

    for (int counter = 0; counter < 4; counter = counter + 1)
    {
        cout << "Enter Team A's quarterly points: ";
        cin >> scoreA;
        cout << "Enter Team B's quarterly points: ";
        cin >> scoreB;
        scoreA = scoreA + scoreA;
        scoreB = scoreB + scoreB;
    }

    cout << "Team A's Score: " << scoreA << endl;
    cout << "Team B's Score: " << scoreB << endl;
    if (scoreA > scoreB)
    {
               cout << "Team A wins";
               }
    else
    {
        cout << "Team B wins";
        }

    system("pause");
    return 0;
}

Answer 1

你并没有具体说明什么不适用于循环，但我在你的 for 循环中看到以下内容:

cout << "Enter Team A's quarterly points: ";
cin >> scoreA;
cout << "Enter Team B's quarterly points: ";
cin >> scoreB;
scoreA = scoreA + scoreA;
scoreB = scoreB + scoreB;

因此，您在每次迭代时都会覆盖 scoreA 和 scoreB 中的分数 (cin >> scoreA)，然后将它们加倍 (scoreA = scoreA + scoreA)。