Question

在输入最后一个值作为性别输入之前，我的循环效果很好，当输入“ true”时，该循环将忽略余下的循环的cin，仅在cout中打印文本，直到循环结束为止。使循环在每个循环上都要求输入，或者我在哪里出错？ ps：这是一项功课，所以我无法更改给出的结构。感谢您的任何建议。代码段：

int main()
{
    struct Patient
    {
        double height;
        double weight;
        int age;
        bool isMale;
    };
    Patient ListOfPatients[4];
    int iii = 0;

    while (iii < 4)
    {
        cout << "enter the height (eg. 1.80 metres) of patient number  " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].height;
        cout << "enter the weight (eg. 80kg) of patient number " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].weight;
        cout << "enter the age of patient number " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].age;
        cout << "is the patient a male? (true = male or false = female) " << endl;
        cin >> ListOfPatients[iii].isMale;

        iii++;
    }

    return 0;
}

Answer 1

您不能将字符串true分配给布尔字段。请检查更正的示例。

int main()
{
    struct Patient
    {
        double height;
        double weight;
        int age;
        bool isMale;
    };
    Patient ListOfPatients[4];
    int iii = 0;

    while (iii < 4)
    {
        string sIsMale = "";

        cout << "enter the height (eg. 1.80 metres) of patient number  " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].height;
        cout << "enter the weight (eg. 80kg) of patient number " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].weight;
        cout << "enter the age of patient number " << iii + 1 << " :" << endl;
        cin >> ListOfPatients[iii].age;
        cout << "is the patient a male? (true = male or false = female) " << endl;
        cin >> sIsMale;
        ListOfPatients[iii].isMale = sIsMale == "true";

        iii++;
    }

    return 0;
}

while循环不提示用户输入（C ++）

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