使用字符串在C++中输入验证循环

Question

我只是在学习C++(1周的经验),并且正在尝试编写一个输入验证循环,要求用户输入"是"或"否".我想通了,但感觉有更好的方法来接近这个.这是我想出的:

{
    char temp[5]; // to store the input in a string
    int test; // to be tested in the while loop

    cout << "Yes or No\n";
    cin.getline(temp, 5);

    if (!(strcmp(temp, "Yes")) || !(strcmp(temp, "No")))    // checks the string if says Yes or No
        cout << "Acceptable input";                         // displays if string is indeed Yes or No
    else                                                    //if not, intiate input validation loop
    {
        test = 0;
        while (test == 0) // loop
        {
            cout << "Invalid, try again.\n";
            cin.getline(temp, 5);               // attempts to get Yes or No again
            if (!(strcmp(temp, "Yes")) || !(strcmp(temp, "No")))  // checks the string if says Yes or No
                test = 1;         // changes test to 1 so that the loop is canceled
            else test = 0;        // keeps test at 0 so that the loop iterates and ask for a valid input again
        }
        cout << "Acceptable input";
    }

    cin.ignore();
    cin.get();

    return 0;
}

我为我糟糕的笔记道歉,不确定什么是相关的.我也在使用cstring标头.

Answer 1

更好的IMO:

std::string answer;

for(;;) {
    std::cout << "Please, type Yes or No\n";
    getline(std::cin, answer);

    if (answer == "Yes" || answer == "No") break;
}

您还可以将答案转换为小写,允许用户不仅键入"是",还可以键入"是","yEs"等.请参阅此问题