Question

因此，对于我的java程序，我需要编写一个带有if else语句的while循环，该语句允许输入对季节的猜测，这是通过将一个季节分配给从1到4生成的数字而随机生成的当我编译时，我没有得到任何错误，但是当我执行程序时，我得到所有猜测的零。数字生成中是否有一些我缺失的东西？或者是字符串比较？

编辑：代码现在按预期工作。我明白我做错了什么。感谢那些帮助过的人。

以下是所需的代码和变量：

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

        //Variables for seasons counter 
        int summerSeasonCounter=0;
        int fallSeasonCounter=0;
        int springSeasonCounter=0;
        int winterSeasonCounter=0;
        int number;
        int limit = 5;
        Scanner keyboard = new Scanner(System.in);

        int count = 0;       // Counter for total number of iterations or loops
        String season = "";//Variable for season    
        final int NUMBER = 15;  // Number of while loop iterations
        String userGuess;//save user guess here


       // A random number generator
       Random generator = new Random();

       while(count < NUMBER)
       {
         number = generator.nextInt(limit);
         if(number == 1)
         {
          season = "summer";
         }
        else if(number == 2)
         {
          season = "spring";
         }
         else if(number == 3)
        {
          season = "fall";
        }
         else if(number == 4)
        {
         season = "winter";
        }

        System.out.print("Guess the season generated by the random number generator:");
        userGuess = keyboard.nextLine();
        userGuess.equalsIgnoreCase(season);

        if(season == "summer")
         {
        summerSeasonCounter +=1;
        }
        else if(season == "spring")
        {
          springSeasonCounter += 1;
        }
        else if(season == "fall")
        {
          fallSeasonCounter += 1;
        }
        else if(season == "winter")
        {
          winterSeasonCounter += 1;
        }


    // Display the results
       System.out.println ("You guessed Summer season correctly     "+summerSeasonCounter+" number of times.");
       System.out.println ("You guessed Fall season correctly "+fallSeasonCounter+" number of times.");
       System.out.println ("You guessed Spring season correctly "+springSeasonCounter+" number of times.");
       System.out.println ("You guessed Winter season correctly "+winterSeasonCounter+" number of times.");

    }
}

Answer 1

您遇到了许多问题，我建议您通过调试器运行代码以帮助您找到错误。一些明显的错误是

nextInt（4）返回0到3。
season.equals("summer");将赛季与“夏天”进行比较并返回false。它没有指定任何东西。
你测试if (userGuess.equalsIgnoreCase(season))四次。如果第一次是假的，那么四次都是假的。

您当前的问题是要分配一个需要使用=

的变量

season = "summer";

为什么我的随机数生成器没有产生输出？

1 个答案: