A simple guessing game I wrote in C++.

GuessingGame.cpp

/* While still playing,
    The computer generates a number.
    The user guesses the number.
        While that number isn't correct,
            Find out if the user's guess is correct this time.
            If so,
                They win, ask them if they want to play again
                If they do,
                    Go back to line 2.
                If they don't,
                    They're done, the game ends
            If not,
                Make them re-guess.
                Go back to line 4.
*/
#include <iostream>

void guessingGame()
{
  bool playing = true;

  do
  {
    srand(time(NULL));
    int magicNumber = rand() % 25 + 1;
    int guessNumber = 0;

    printf("Enter your guess (0 - 25): ");

    std::cin >> guessNumber;
    
    // To start, the user has not guessed the correctGuess.
    bool correctGuess = false;

    while (!correctGuess)
    {
      if (guessNumber == magicNumber)
      {
        printf("\n\nYou win! The number was %d.\n\n", magicNumber);
        
        // Then this while loop will end since the player guessed the number.
        correctGuess = true;


      // validAnswer prevents the user from entering anything but 'y' or 'n'.
      // That is, it will keep asking until the player enters a 'y' or 'n'.
      bool validAnswer = false;
        while (!validAnswer)
        {
            char playAgain = ' ';
            printf("\nPlay again? (y) or (n): ");

            std::cin>>playAgain;

            if (playAgain == 'n')
            {
              printf("\n\nBye!");
              validAnswer = true;
              playing = false;

            }
            else if (playAgain == 'y')
            {
              printf("\nOkay!\n");
              validAnswer = true;
            }

            else
            {
              char playAgain = ' ';
              validAnswer = false;
            }
        }
      }
      
      else if (guessNumber < magicNumber)
      {
          correctGuess = false;

          printf("Nope, the number is HIGHER.\nguess again: (0 - 25): ");

          std::cin >> guessNumber;
      }

      else
      {
        correctGuess = false;

        printf("Nope, the number is LOWER.\nguess again: (0 - 25): ");

        std::cin >> guessNumber;

      }
    }

  } while (playing);
}


int main()
{
  guessingGame();
  return 0;
}