猜測遊戲 - 在While循環內嵌套if語句的問題

Question

我的程序有問題。我有猜測遊戲的基礎知識，但我有一個問題根據猜測的數量實現不同的短語。目前，當程序運行並輸入一個數字時，它會立即移動到遊戲結束，並顯示答案，而不允許多次猜測。這是我的代碼。我已經編輯它被格式化的更好一點，因爲每個人都抱怨過：

import java.util.*; 

public class Hw_five { 


    public static void main(String[] args) { 

     int answer; 
     int tries = 0; 
     answer = (int) (Math.random() * 99 + 1); 

     System.out.println("Welcome to the Guess the Number Game "); 
     System.out.println("+++++++++++++++++++++++++++++++++++++ \n"); 
     System.out.println("I'm thinking of a number between 1-100 "); 
     System.out.println("Try to guess it! "); 

     Scanner sc = new Scanner(System.in); 
     String choice = "y"; 

     while (choice.equalsIgnoreCase("y")) { 

      int guess = getIntWithinRange(sc, "Please enter a number: ", 0, 100); 

      if (guess != answer) { 

       if (guess == answer) { System.out.println("Your guess is correct! Congratulations!"); 
       } 


       else if (guess < answer) 
       { System.out.println("Your guess was too low. Try again. "); 
       tries++; 
       } 

       else {System.out.println(
         "Your guess was too high. Try again."); tries++; } 

      } 

       System.out.println("The number was " + answer + " !"); 
       System.out.println("You guessed it in " + tries + " tries"); 




      //ask if they want to continue 
      System.out.println("\n Continue (y/n)? "); 
      choice = sc.next(); 

      System.out.println(); 

     } 

     //print out thank you message 
     System.out.println("Thanks for playing! Try again later. "); 
     sc.close(); 
    } 

    public static int getInt(Scanner sc, String prompt) { 
     int i = 0; 
     boolean valid; 
     valid = false; 

     while (valid == false) 
     { 
      System.out.println(prompt); 
      if (sc.hasNextInt()) { 
       i = sc.nextInt(); 
       valid = true; 
      } else { 
       System.out.println("Please enter a number. "); 
       sc.next(); 
      } 

     } 
     return i; 

    } 

    public static int getIntWithinRange(Scanner sc, String prompt, int min, int max) { 
     int i = 0; 
     boolean isValid = false; 
     while (isValid == false) { 
      i = getInt(sc, prompt); 
      if (i <= min) { 
       System.out.println("Error! Number must be greater than " + min + "."); 
      } else if (i >= max) { 
       System.out.println("Error! Number must be less than " + max + "."); 
      } else { 
       isValid = true; 
      } 
     } 
     return i; 
    } 
    } 

Answer 1

下面是一個例子，還有看看你的一些編碼「語法」的。

例如，

int answer; 
answer = (int) (Math.random() * 99 + 1); 

你可以聲明其丟棄：

int answer = (int) (Math.random() * 99 + 1); 

例子：

Scanner input = new Scanner(System.in); 
int answer = (int) (Math.random() * 99 + 1); 

int count = 0; 
System.out.print("Guess number from 1 to 100: "); 
int guess = input.nextInt(); 

while (guess != answer) { 
    if (guess > 100 || guess < 1) { 
     System.out.println("Behave!"); 
     guess = input.nextInt(); 
     count++; 
    } else if (answer > guess) { 
     System.out.println("Too low"); 
     guess = input.nextInt(); 
     count++; 
    } else if (answer < guess) { 
     System.out.println("Too high"); 
     guess = input.nextInt(); 
     count++; 
    } 
} 
System.out.println("Congratz! On " + count + " tries!");