Question

import java.util.Scanner;

public class LoopsEndingRemembering {
    public static void main(String[] args) {
        // program in this project exercises 36.1-36.5
        // actually this is just one program that is split in many parts

        Scanner reader = new Scanner(System.in);

       System.out.println("Type numbers: ");
       int input = Integer.parseInt(reader.nextLine());

       while(true){

           if(input == -1){
               break;
           }

         }



       System.out.println("Thank you and see you later!");


    }
}

用户应该可以输入多个数字，直到达到-1。一旦到达它应该中断循环并打印最后一行。

Answer 1

您需要输入

 System.out.println("Type numbers: ");
 int input = Integer.parseInt(reader.nextLine());

进入循环，否则将永远不会获得新的用户输入

Answer 2

您需要在循环内使用呼叫扫描器

my_list = []
stage_list = []
mic_list = []
all_list = []

def addto_list():
    addto = input()
    for str in addto:
        input("Can he do stage?(y/n): ")
        if input == "y":
            stage_list.append(addto)
        else:
            break
    for str in addto:
        input("Can he do mic?(y/n): ")
        if input == "y":
            mic_list.append(addto)
        else:
            break
    for str in addto:
        input("Can he do sound?(y/n): ")
        if input == "y":
            all_list.append(addto)
        else:
            break     

    my_list.append(addto)

Java while循环在“ break”语句后没有中断

2 个答案: