c++ - 无法退出 do-while 循环？

Question

我不明白为什么在用户输入 -1 时 do-while 循环没有终止。忽略内部 while 循环之后的所有内容。我知道问题出在 while 循环的某个地方。我只是看不到它。

int main()
{
    srand(time(0));
    int input;
    std::string pass, company, timeS;
    do
    {
        std::cout << "Enter password length: ";
        std::cin >> input;
        while(input < 8 || input > 16)
        {
            if(!std::cin)
            {
                std::cin.clear();
                std::cin.ignore(100, '\n');
            }

            std::cout << "Password length must be between 8 and 16.\nEnter password length: ";
            std::cin >> input;
        }

        std::cout << "Enter company name: ";
        std::getline(std::cin, company);

        pass = passGen(input);
        time_t now = time(0);
        auto time = *std::localtime(&now);
        std::stringstream ss;
        ss << std::put_time(&time, "%Y %b %d %H:%M:%S %a");
        timeS = ss.str();
        std::cout << "You passoword: " << pass << std::endl;
        writeFile(pass, company, timeS);

    }while(input != -1);

    return 0;
}

提前致谢!

Answer 1

在此循环中，您等待 8 到 16 之间的数字:

while(input < 8 || input > 16)
{
    if(!std::cin)
    {
        std::cin.clear();
        std::cin.ignore(100, '\n');
    }

    std::cout << "Password length must be between 8 and 16.\nEnter password length: ";
    std::cin >> input;
}

猜猜，那个循环永远不会出现什么？对，-1 !! =)