Java while循环中的if/else语句

我为一个游戏编写了一个代码，模拟用户和计算机掷骰子，胜利者从失败者那里得到1美元，每个从2美元开始。代码运行良好，但当用户或计算机达到我预期的0$时，代码并没有结束。有什么建议吗

import java.util.Scanner;

public class ALE_04_RollDice {
public static void main (String[] args) {

    Scanner input = new Scanner(System.in);
    int userMoney = 2;
    int compMoney = 2;
    int userRoll = (int) (1 + Math.random() * 6);
    int compRoll = (int) (1 + Math.random() * 6);

    System.out.print("Press 'r' if you would like to roll ");
    do {String roll = input.nextLine();
    if (roll.equals("r")); {
        if (userRoll > compRoll){
            userMoney++;
            compMoney--;
     System.out.print("The computer rolled " + compRoll + " and you rolled "       + userRoll + ". you won."
        + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
            }

            else if (userRoll < compRoll) {
                compMoney++;
                userMoney--;
                System.out.print("The computer rolled " + compRoll + " and you rolled " + userRoll + 
                        ". you lost" + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
            }

            else {System.out.print("The computer rolled " + compRoll + "and you rolled " + userRoll + 
                    ". it's a tie" + "\n" + "You have $" + userMoney + " & the computer has $" + compMoney);}


            }
            }while (userMoney >= 0 || compMoney >=0);
    }}

import java.util.Scanner；
公共级ALE_04_RollDice{
公共静态void main（字符串[]args）{
扫描仪输入=新扫描仪（System.in）；
int userMoney=2；
国际货币基金组织=2；
int userRoll=（int）（1+Math.random（）*6）；
int compRoll=（int）（1+Math.random（）*6）；
System.out.print（“如果要滚动，请按“r”）；
do{String roll=input.nextLine（）；
如果（滚动等于（“r”）{
如果（用户滚动>压缩）{
用户货币++；
钱——；
System.out.print（“计算机滚动”+compRoll+“而你滚动”+userRoll+”。你赢了。”
+“\n”+“您有$”+userMoney+“&计算机有$”+compMoney）；
}
否则如果（用户滚动=0 | | compMoney>=0）；
}}

当小于或等于但有大于或等于时，您希望停止

    while (userMoney >= 0 || compMoney >=0) {

---

您的while语句正在测试0。while循环永远不会触发。

首先，玩家和玩家的while条件money value=2存在问题，因此while将永远不会触发。。解决了这个问题，您可以使用do-while

do{
    statement(s) //block of statements
}while (Boolean expression);

因此，在

do{}

中，您可以有自己的语句和条件。因此，它将执行这些大括号中的任何操作，直到满足

while（）

中的条件

比如说

class DoWhileLoopExample {
    public static void main(String args[]){
         int i=10;
         do{
              System.out.println(i);
              i--;
         }while(i>1);
    }
}

问题原因： while循环根本不运行，因为其中的条件最初被评估为false。

  while (userMoney <= 0 || compMoney <=0)

然后添加一个if语句，说明compMoney==0或userMoney==0，然后中断while循环

 if(userMoney == 0 || compMoney == 0){
     break;
}

---

您在while语句中使用了不正确的条件。您正在测试是否有任何播放机大于等于0，这将始终测试true并导致无限循环。相反，测试两个玩家是否都有>0，如果没有，则结束游戏

你还有一个“；”在你发表声明之后。这将导致后面的代码一直执行

以下是完整的工作代码：

public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
int userMoney = 2;
int compMoney = 2;
int userRoll = (int) (1 + Math.random() * 6);
int compRoll = (int) (1 + Math.random() * 6);

System.out.print("Press 'r' if you would like to roll ");
do {String roll = input.nextLine();
if (roll.equals("r")) {
    if (userRoll > compRoll){
        userMoney++;
        compMoney--;
 System.out.print("The computer rolled " + compRoll + " and you rolled "       + userRoll + ". you won."
    + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
        }

        else if (userRoll < compRoll) {
            compMoney++;
            userMoney--;
            System.out.print("The computer rolled " + compRoll + " and you rolled " + userRoll + 
                    ". you lost" + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
        }

        else {System.out.print("The computer rolled " + compRoll + "and you rolled " + userRoll + 
                ". it's a tie" + "\n" + "You have $" + userMoney + " & the computer has $" + compMoney);}


        }
         //prompt user to type 'r' to roll again
        System.out.println("\n\nPress 'r' if you would like to roll ");
        }while (userMoney > 0 && compMoney >0);

        System.out.println("\n\nGAME OVER!!!");
    }
   }
//end main

publicstaticvoidmain（字符串[]args）
{
扫描仪输入=新扫描仪（System.in）；
int userMoney=2；
国际货币基金组织=2；
int userRoll=（int）（1+Math.random（）*6）；
int compRoll=（int）（1+Math.random（）*6）；
System.out.print（“如果要滚动，请按“r”）；
do{String roll=input.nextLine（）；
如果（滚动等于（“r”））{
如果（用户滚动>压缩）{
用户货币++；
钱——；
System.out.print（“计算机滚动”+compRoll+“而你滚动”+userRoll+”。你赢了。”
+“\n”+“您有$”+userMoney+“&计算机有$”+compMoney）；
}
否则如果（用户滚动0&&compMoney>0）；
System.out.println（“\n\n名称超过！！！”；
}
}
//端干管

如果这解决了您的问题，您应该接受答案

public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
int userMoney = 2;
int compMoney = 2;
int userRoll = (int) (1 + Math.random() * 6);
int compRoll = (int) (1 + Math.random() * 6);

System.out.print("Press 'r' if you would like to roll ");
do {String roll = input.nextLine();
if (roll.equals("r")) {
    if (userRoll > compRoll){
        userMoney++;
        compMoney--;
 System.out.print("The computer rolled " + compRoll + " and you rolled "       + userRoll + ". you won."
    + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
        }

        else if (userRoll < compRoll) {
            compMoney++;
            userMoney--;
            System.out.print("The computer rolled " + compRoll + " and you rolled " + userRoll + 
                    ". you lost" + "\n" + "You have $" + userMoney + " & The computer has $" + compMoney);
        }

        else {System.out.print("The computer rolled " + compRoll + "and you rolled " + userRoll + 
                ". it's a tie" + "\n" + "You have $" + userMoney + " & the computer has $" + compMoney);}


        }
         //prompt user to type 'r' to roll again
        System.out.println("\n\nPress 'r' if you would like to roll ");
        }while (userMoney > 0 && compMoney >0);

        System.out.println("\n\nGAME OVER!!!");
    }
   }
//end main