🎮 Tic Tac Toe (C++ CLI Game)

A fully functional command-line Tic Tac Toe game built in C++, designed with clean modular structure, robust input handling, and complete game state management.

This project focuses on building a reliable interactive system rather than just implementing basic game logic.

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🚀 Features

🎯 Core Gameplay

• Two-player mode (Player X vs Player O)
• Turn-based gameplay with automatic player switching
• Real-time win detection (rows, columns, diagonals)
• Draw detection when the board is full

🧠 Robust Input System

• Prevents invalid inputs (non-numeric, out-of-range)
• Prevents overwriting already occupied cells
• Continuously prompts until valid input is provided

🔁 Game Session Control

• Replay system to play multiple rounds without restarting program
• Score tracking across games:
  • Tracks wins for Player X and Player O
  • Displays score after each game

🧱 Clean Code Structure

• Modular function-based design
• Separation of concerns:
  • Input handling
  • Validation
  • Game logic
  • Display
• Central game loop controlling the entire flow

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🛠️ Technical Concepts Used

• 2D arrays for board representation
• Functions and modular programming
• Loops for control flow and validation
• Conditional logic for game decisions
• Input stream handling (cin, fail-state recovery)
• Basic state management

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⚙️ How the Game Works

1. Board is initialized with positions (1–9)
2. Players take turns entering positions
3. Each move is validated before being applied
4. After every move:
   • Check for win
   • Check for draw
5. Game ends when:
   • A player wins
   • OR the board is full (draw)
6. User can choose to play again

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▶️ How to Run

Compile:

g++ main.cpp -o game