Question

我无法在我的代码中使用循环，所以如果用户说“不”，它会将它们带回第一个问题，他们必须回答“是”。

 System.out.println("Adventurer soliders need your aid in Silverkeep can you deliver supplys to them? ");

 String choice;
 System.out.print("So can you deliver the supplys to them? ");
 choice = in.next();

 if (choice.equals("Yes"))
    System.out.println("Thank you so much, he are the supplys they need.");
 else if (choice.equals("No"))
    System.out.println("But these soliders lives depend on these supplys! You must help us.");

因此，如果他们说不，它会将它们带回System.out.print行。

System.out.println("Adventurer soliders need your aid in Silverkeep can you deliver supplys to them? ");
while (run) {
    String choice;
    System.out.print("So can you deliver the supplys to them? ");
    choice = in.next();

    if (choice.equals("Yes"))
        System.out.println("Thank you so much, he are the supplys they need.");

    else if(choice.equals("No"))
        System.out.println("But these soliders lives depend on these supplys! You must help us.");
    run = true;
}

当我尝试运行上面的代码时，它只是向控制台发送垃圾邮件，“那么你可以将耗材交付给他们吗？”

所以我哪里出错了......我尝试了多件事，但没有运气。

Answer 1

你并没有在if和else之后放置{}，所以只做下一个语句。 run=true;总是在发生。

Answer 2

立即试用代码，

    System.out.println("Adventurer soliders need your aid in Silverkeep can you deliver     supplys to them? ");

    while (run) {
        String choice;
        System.out.print("So can you deliver the supplys to them? ");
        choice = in.next();

        if (choice.equals("Yes")) {
            System.out.println("Thank you so much, he are the supplys they need.");
            run = false;
        } else if (choice.equals("No")) {
            System.out.println("But these soliders lives depend on these supplys! You must help us.");
            run = true;
        }
    }

您忘记使用布尔值false;

初始化运行值

Answer 3

您可以使用 执行........而 循环，因为您希望根据用户选择决定是否必须提示问题再次或不。但首先你必须向用户询问........

System.out.println（“Adventurer soliders需要你在Silverkeep的帮助，你可以向他们提供补给吗？”）;

do {
    String choice;
    System.out.print("So can you deliver the supplys to them? ");
    choice = in.next();

    if (choice.equals("Yes")) {
        System.out.println("Thank you so much, he are the supplys they need.");
        run = false;
    } else if (choice.equals("No")) {
        System.out.println("But these soliders lives depend on these supplys! You must help us.");
        run = true;
    }
}while (run)

你需要声明运行

Answer 4

你可以尝试

do{
    //Your code
}while(choice.equals("No"))

如何让循环工作

4 个答案: