MasterMind (C++)

A console-based implementation of the classic Mastermind game using numbers instead of colors.

Description

This project is a simple C++ game for two players:

• The first player sets a secret 4-digit number.
• The second player tries to guess it in 10 attempts.

After each guess, the game provides feedback:

• How many digits are correct
• How many digits are in the correct position

If the player guesses the number correctly, the game ends with a success message. Otherwise, after 10 attempts, the correct number is revealed.

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Game Rules

• The secret number must be:
  • Exactly 4 digits
  • Digits from 0–9
  • First digit cannot be 0
• The second player has 10 tries
• After each guess:
  • Correct digits → digits that exist in the number
  • Correct positions → digits in the correct place

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Example

Secret number: 1234
Guess: 1243

Correct digits: 4
Correct positions: 2

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Technologies Used

• C++
• Console (CLI)

How to Run

Using Dev-C++

1. Open the project
2. Make sure all files are added:
   • main.cpp
   • Number.cpp
   • Number.h
3. Click Compile & Run (F11)

Using terminal (g++)

g++ main.cpp Number.cpp -o mastermind
./mastermind

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Features

• Input validation
• Prevents invalid numbers
• Handles duplicate digits correctly
• Clean game loop with win/lose conditions

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Notes

• The screen clears after the first player inputs the number
• The game runs entirely in the terminal
• Designed as a beginner-friendly C++ project

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Author

Eirini Markantoni