title: The variable is being used without being initialized C++
body: <p>I have tried looking for an answer and fixing this myself but I have failed.
  I'm attempting to create a program that executes a letter guessing game. Please be advised that this IS homework. However, I'm not looking for answers, I am looking for insight. After executing this program I'm getting the error "The variable 'solution' is being used without being initialized C++.</p>
  
  <p>Any ideas?</p>
  
  <pre><code>    #define _CRT_SECURE_NO_WARNINGS
      #include &lt;stdio.h&gt;
      #define MAXGUESSES 4
      void GuessItRules();
      int PlayOneGame(char);
      char GetTheLetter();
      int IsAWinner(char, char);
      void CompareTheLetters(char guess, char letter);
  
  
  
      int main()
      {
      //declare additional variables
      //declare FILE pointer
      FILE *inp;
      int numGames, i = 0;
      //letter from file
      char letter;
      //variable for the return of the PlayOneGame function
      int didYouWin;
  
  
      char solution;
  
  
      //display instructions
      GuessItRules();
      //connect to the file HINT: use fopen
      inp = fopen("letterinput.txt", "r");
  
      //get number of games to play
      printf("How many games? (1 to 5): ");
      scanf("%d", &amp;numGames);
  
      //this for loop will allow the player to play more than one game
      //without recompiling
      for (i = 0; i &lt; numGames; i++)
      {
          //get a letter from file - use fscanf
          fscanf(inp, "%c", &amp;letter);
          //print the letter back onto the screen, just to test
          //printf("\nThe letter is %c\n", letter);
  
          //Play one game (Call PlayOneGame function)
          //remember the function has an int return type
          printf("Let's play game %d\n", i + 1);
          PlayOneGame(solution);
          //tell the player if they have won or lost (test the variable didYouWin)
  
        }
  
        //close file
      fclose(inp);
      return 0;
  }
  
  
  
  
      char GetTheLetter()
      {
      char guess;
      printf("\nMake a guess (CAPITAL LETTERS ONLY):");
      scanf("%c", &amp;guess);
      return guess;
      }
  
      void CompareTheLetters(char guess, char letter)
      {
      if (guess == letter)
      {
          printf("\nThe Letter and the guess are the same (%c)\n",guess);
      }
      else 
      if (guess &lt; letter)
      {
          printf("The letter comes after your guess (%c)", guess);
      }
      else 
      if (guess &gt; letter)
      {
          printf("The letter comes before your guess (%c)", guess);
      }
  
      }
  
      int IsAWinner(char guess, char letter)
      {
      if (guess == letter)
      {
          return 1;
      }
      else
          if (guess &lt; letter)
          {
              return 0;
          }
          else
              if (guess &gt; letter)
              {
                  return 0;
              }
      }
  
      int PlayOneGame(char solution)
      {
      int numGuesses = 0;
      //SHOULD BE INITIALZED TO 1
      int winOrLose = 1;
      // user guess
  
      char guess = 0;
  
      //char solution = 0;
      char letter = 0;
  
  
      //As long as the user  has not used up the maximum number
      //of guesses and has not guessed correctly 
      //the game will continue using this while loop
      while (numGuesses &lt; MAXGUESSES &amp;&amp; winOrLose == 1)
      {
          printf("Getting guess number %d\n", numGuesses+1);
          //function call to GetTheletter - returns to guess variable
          GetTheLetter();
          //function call to IsAWinner - returns to winOrLose variable (0 or 1)
          IsAWinner(guess, letter);
          //function call to CompareTheLetters - gives the user  a message
          CompareTheLetters(guess, letter);
          //update counter for number of guesses used
          numGuesses = numGuesses + 1;
  
      }
  
      return winOrLose;  //(0 or 1)
  
      }
  
      //add the other function definitions
  
      void GuessItRules()
      {
      printf("Welcome to the Letter Guessing Game\n");
      printf("\nFirst, you will enter the number of games you want 
      to play (1 - 5      games)\n");
      printf("For each game you will have 4 chances to guess each letter\n");
      printf("Let's begin:\n");
      }
  </code></pre>