c++ - 如何在 for 循环中进行错误捕获

Question

你好，我想知道有谁知道如何在“for”循环中捕获错误我有我的循环工作，并且有一种方法可以识别输入了无效数字，但无效数字仍然占据我数组中的一个位置

我想知道是否有办法让程序忽略或丢弃无效输入。

        //for loop to collect quiz scores
for (Quiz=0 ; Quiz < 4; Quiz++) //loop to input and add 4 quiz grades
{
    cout << "Enter grade for Quiz " << QuizN++ << " ";  //output to screen 
    cin >> Qscore[Quiz];    //array in action taking scores inputted and assigning it a position inside the array

    if (Qscore[Quiz] >= 0 && Qscore[Quiz] <= 10)
        QTotal = QTotal + Qscore[Quiz];
    else
    {
        cout << "Please enter a score between 0 and 10" << endl;
        QuizN--;
    }

Answer 1

for(Quiz = 0; Quiz < 4;) //loop to input and add 4 quiz grades
{
    cout << "Enter grade for Quiz " << Quiz+1 << " ";  //output to screen 
    cin >> Qscore[Quiz];    //array in action taking scores inputted and assigning it a position inside the array

    if ((Qscore[Quiz] >= 0) && (Qscore[Quiz] <= 10))
    {
        QTotal += Qscore[Quiz];
        ++Quiz;
    }
    else
    {
        cout << "Please enter a score between 0 and 10" << endl;
    }
}