c++ - 如何让 switch 语句循环回到菜单

Question

大家好，我目前在使 switch 语句返回到菜单开头时遇到了一些问题。相反，除非用户选择正确的选择，否则它会进入另一个我不希望它进入的主要功能。

这是我的代码:

int main() 
{
int choice;
bool menu = true;
cout <<"Please select one of the following options:  \n";

cout << "1: Play\n"
        "2: Help\n"
        "3: Config\n"
        "4: Quit\n";

cout << "Enter your selection (1, 2,3 or 4): ";
cin >> choice;
//*****************************************************************************
// Switch menu to display the menu.
//*****************************************************************************
    if(menu)
    {

      switch (choice)
     {
          case 1:
            cout << "You have chosen play";
            break;
         case 2:
            cout << "You have chosen help\n";
            cout << "Here is a description of the game Hangman and how it is played:\nThe word to guess is represented by a row of dashes, giving the number of letters, numbers and category. If the guessing player suggests a letter or number which occurs in the word, the other player writes it in all its correct positions";
            break; 
         case 3:
            cout << "You have chosen config";
            break;
             case 4:
            cout << "You have chosen Quit, Goodbye.";
            break;
        default:
            cout<< "Your selection must be between 1 and 4!\n";

    }

        }    
getchar();
getchar();


cout << "You missed " << playGame("programming");
cout << " times to guess the word programming." << endl;

Answer 1

你可以用 while 循环替换你的 if

cout << "Enter your selection (1, 2, 3 or 4): ";
while (menu)
{
    cin >> choice;
    menu = false;

    switch (choice)
    {
    case 1:
        cout << "You have chosen play";
        break;
    ....
    default:
        cout<< "Your selection must be between 1 and 4!\n";
        menu = true; // incorrect input, run loop again
}