Java:如何询问用户是否想再玩一次

Question

如何询问用户是否想再玩一次。Ø 我必须要求用户为此输入一个字符 - ‘y’或‘n’(确保不区分大小写)

如果用户输入“y”，那么我希望它循环问题“您想玩多少轮”，然后循环“[代码块]”。

    //asks user for their name
    System.out.println("\nWhat is your name?");
    name = in.nextLine();

    //asks user the number of rounds they want to play
    System.out.println("How many rounds would you like to play?");
    numRound = in.nextInt();

    char cont = 'y';

    do {
          [block of code ]
        }

    } while (roundnum <= numRound);     
    System.out.println("Would you like to play again? (y/n)");
    cont = in.next().charAt(0);
    while (cont == 'y');
    }

Answer 1

您使用 while 循环来检查用户是否想再次玩游戏的做法是正确的，但您在错误的位置开始循环。 while 循环应该在您想要重复的任何操作之前开始。所以伪代码大致是:

while (cont == 'y'){
    //Enter game code here
    System.out.println("Would you like to play again? (y/n)");
    cont = in.next().charAt(0);
}

此外，永远不要以分号结束条件。它不会编译。