代碼不會編譯，我不明白這些錯誤是什麼

Question

所以標題說我的代碼不會編譯我現在和之前得到多個問題，當它格式不同時它在一定程度上工作。但現在代碼完全拒絕運行，並且以我當前的理解水平，我無法找出問題，但我相信問題只是我對程序進行格式化的方式，因此它遵循流程圖。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 

namespace ConsoleApplication3 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      // SETUP SESSION 
      // Declare variables 
      Int32 currentGuess, upperLimit, randomNumber; 
      double maxGuesses; 
      char playAgain; 
      Random random = new Random(); 


      // WELCOME THE USER 
      Console.WriteLine("Welcome to the high/low guessing game."); 

      //INITILIZE WIN COUNT AND GAME COUNT 

      Int32 gameCount = 0, winCount = 0; 

      //DO LOOP #1 
      do 
      //SETUP GAME 
      { 
      //REQUEST USER FOR UPPER LIMIT 
       Console.WriteLine("Enter Upper range (e.g. 100):"); 
       upperLimit = Int32.Parse(Console.ReadLine()); 

       //INITILIZE GUESS COUNT 
       Int32 guessCount = 0; 
       bool gameOver = false; 

       //DETERMINE RANDOM NUMBER 
       randomNumber = random.Next(1, upperLimit); 
       //DETERMINE MAX GUESSES 
       maxGuesses = Math.Ceiling(Math.Log(upperLimit, 2) - 1); 

       // INFORM USER RANDOM NUMBER IS CHOSEN AND INDICATE NUMBER OF GUESSES ALLOWED 
       Console.WriteLine("I picked a number between 1 and {0} you get {1} chances to guess it", upperLimit, maxGuesses); 

      //DO LOOP #2 
      do 
          { 
           //PLAY GAME 
           //READ GUESSES 
          Console.WriteLine(string.Format(" Enter Guess {0}: ", guessCount)); 
          currentGuess = Int32.Parse(Console.ReadLine()); 
          if (currentGuess == randomNumber) 
          { 
           //INCRIMENT WIN COUNT 
           winCount++; 
          } 
          if (currentGuess == randomNumber) 
          { 
           Console.WriteLine("You got it!"); 
           gameOver = true; 
           gameCount++; 
          } 
          else if (currentGuess > randomNumber) 
          { 
           Console.WriteLine("Too High"); 
          } 
          else if (currentGuess < randomNumber) 
          { 
           Console.WriteLine("Too Low"); 
          } 


          } while (guessCount < maxGuesses && gameOver == false); 

       //POST PROCESSING GAME 

          if (guessCount++ == maxGuesses) 
             { 
              //INCRIMENT GAME COUNT 
              gameCount++; 
              Console.WriteLine("You lost"); 
              //DISPLAY CORRECT NUMBER IF TOO MANY INCORRECT GUESSES 
              Console.WriteLine("\nThe number was {0},better luck next time!", randomNumber); 
              guessCount = 1; 

           //PROMPT TO PLAY AGAIN 

              Console.WriteLine("Would you like to play again? (Y/N)"); 
              playAgain = char.Parse (Console.ReadLine()); 


             } 
              while (playAgain == 'y' ||playAgain == 'Y'); 

          // display win count 
         Console.WriteLine("Thanks for playing, you won {0} out of {1} games", winCount, gameCount); 
         Console.ReadLine(); 
     } 
    } 
} 

Answer 1

您的程序中有兩個錯誤。首先，在使用變量之前，必須始終進行初始化。如果您查看playAgain變量可以採用的不同路徑，則該值僅在您的if (guessCount++ == maxGuesses)路徑中設置。如果條件不成立，您將無緣無故地進入while部分。您可以申報改爲

char playAgain = 'n'; 

第二個錯誤是缺失的支架。如果你仔細做縮進，你會看到：

do 
{ 
    //Bunch of code 
    if (guessCount++ == maxGuesses) 
    { 
     //INCRIMENT GAME COUNT 
     gameCount++; 
     Console.WriteLine("You lost"); 
     //DISPLAY CORRECT NUMBER IF TOO MANY INCORRECT GUESSES 
     Console.WriteLine("\nThe number was {0},better luck next time!", randomNumber); 
     guessCount = 1; 

     //PROMPT TO PLAY AGAIN 

     Console.WriteLine("Would you like to play again? (Y/N)"); 
     playAgain = char.Parse(Console.ReadLine()); 

} while (playAgain == 'y' || playAgain == 'Y'); 

，你可以看到，你錯過了if支架，它應該是

playAgain = char.Parse(Console.ReadLine()); 
    } 

} while (playAgain == 'y' || playAgain == 'Y'); 

此外，還有一個LOT你可以改進的東西。例如，您應該將您的變量聲明放置在不在類頂部的地方。每個評論應該是一個單獨的方法;這將是比較容易的方式爲你，如果你的主要遵循而不是代碼的一個巨大的BLOB流程圖中，是這樣的：

private static void Main(string[] args) 
{ 
    WelcomeTheUser(); 
    InitializeWinCountAndGameCount(); 
    Play(); 
    DisplayWinCount(); 
} 

您也可避免一噸放錯地方的括號的，如果你把你的函數小。

Answer 2

兩個問題：

1. 你缺少你的外表你最後一次，而之前squirly支架做while循環。
2. 當你聲明它時，你需要初始化「playAgain」字符。

;

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 

namespace ConsoleApplication3 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      // SETUP SESSION 
      // Declare variables 
      Int32 currentGuess, upperLimit, randomNumber; 
      double maxGuesses; 
      char playAgain = 'n'; 
      Random random = new Random(); 

      // WELCOME THE USER 
      Console.WriteLine("Welcome to the high/low guessing game."); 

      //INITILIZE WIN COUNT AND GAME COUNT 

      Int32 gameCount = 0, winCount = 0; 

      //DO LOOP #1 
      do 
      //SETUP GAME 
      { 
       //REQUEST USER FOR UPPER LIMIT 
       Console.WriteLine("Enter Upper range (e.g. 100):"); 
       upperLimit = Int32.Parse(Console.ReadLine()); 

       //INITILIZE GUESS COUNT 
       Int32 guessCount = 0; 
       bool gameOver = false; 

       //DETERMINE RANDOM NUMBER 
       randomNumber = random.Next(1, upperLimit); 
       //DETERMINE MAX GUESSES 
       maxGuesses = Math.Ceiling(Math.Log(upperLimit, 2) - 1); 

       // INFORM USER RANDOM NUMBER IS CHOSEN AND INDICATE NUMBER OF GUESSES ALLOWED 
       Console.WriteLine("I picked a number between 1 and {0} you get {1} chances to guess it", upperLimit, maxGuesses); 

       //DO LOOP #2 
       do 
       { 
        //PLAY GAME 
        //READ GUESSES 
        Console.WriteLine(string.Format(" Enter Guess {0}: ", guessCount)); 
        currentGuess = Int32.Parse(Console.ReadLine()); 
        if (currentGuess == randomNumber) 
        { 
         //INCRIMENT WIN COUNT 
         winCount++; 
        } 
        if (currentGuess == randomNumber) 
        { 
         Console.WriteLine("You got it!"); 
         gameOver = true; 
         gameCount++; 
        } 
        else if (currentGuess > randomNumber) 
        { 
         Console.WriteLine("Too High"); 
        } 
        else if (currentGuess < randomNumber) 
        { 
         Console.WriteLine("Too Low"); 
        } 


       } while (guessCount < maxGuesses && gameOver == false); 

       //POST PROCESSING GAME 

       if (guessCount++ == maxGuesses) 
       { 
        //INCRIMENT GAME COUNT 
        gameCount++; 
        Console.WriteLine("You lost"); 
        //DISPLAY CORRECT NUMBER IF TOO MANY INCORRECT GUESSES 
        Console.WriteLine("\nThe number was {0},better luck next time!", randomNumber); 
        guessCount = 1; 

        //PROMPT TO PLAY AGAIN 

        Console.WriteLine("Would you like to play again? (Y/N)"); 
        playAgain = char.Parse(Console.ReadLine()); 


       } 
      } while (playAgain == 'y' || playAgain == 'Y'); 

      // display win count 
      Console.WriteLine("Thanks for playing, you won {0} out of {1} games", winCount, gameCount); 
      Console.ReadLine(); 
     } 
    } 
}