C ++ Do while循环条件不起作用

Question

#include<iostream>
#include<ctime>
#include<cstdlib>

using namespace std;

int main(){
int gnumber, rnumber;
    char choice;
    int tries;

    do {
    cout << "Welcome to the Number Guessing Game!" << endl;
    cout << endl; // breakline
    cout << "How many tries: ";
    cin >> tries;
    cout << endl;

    while (tries > 0){

    srand(time(NULL));
    rnumber = rand() % 99;

    cout <<"Enter an integer greater than or equal to 0 and less than 100:";
    cin >> gnumber;
    system("cls");

    if (tries != 1){
        if (gnumber < 100 && gnumber >= 0){

            if (gnumber == rnumber){
            cout << "Congratulations! You've guessed the number." << endl;
            tries--;
            cout << "Remaining tries: " << tries << endl;   
            }

            else if (gnumber > rnumber){
                cout << "Your guess is higher than the number." << endl;
                tries--;
                cout << " Guess Again!" << endl;
                cout << "Remaining tries: " << tries << endl;
            }
            else{
                cout << "Your guess is lower than the number." << endl;
                tries--;
                cout << " Guess Again!" << endl;
                cout << "Remaining tries: " << tries << endl;
            }
        }
        else
        cout << "Must greater or equal to 0 and lesser than 100!" << endl;
    }
    else 
    {
        cout << "Game over!" <<" The number is: " << rnumber << endl;
        cout << "Play Again? (Y/N)" << endl;
        cin >> choice;
        system("cls");

    }

    }
    }while(choice == 'Y' || choice == 'y'); //  

    system("pause");
    return 0;
    }

即使我输入 'N' 或 'n' 选项，它也不会停止循环。 即使我输入“Y”或“y”，它也不会询问我想要多少次尝试。 相反，它只是直接询问我想输入什么整数。 请尝试复制并编译代码以进一步了解问题所在。请帮忙。

P.S.：这是我顺便做的一个猜谜程序……

Answer 1

如果用户输入的值不是 1，则内部循环中的错误，否则您不会递减 tries，因此它会卡住：

    else 
    {
        cout << "Game over!" <<" The number is: " << rnumber << endl;
        cout << "Play Again? (Y/N)" << endl;
        cin >> choice;
        system("cls");
        tries--; // add this
    }