This course will teach beginner-level coders to build the classic game Tic-Tac-Toe in C++ using a modular programming method.

cpp.tar.gz

After learning the basics of C++, it’s a great idea to complete at least one hands-on project where you can build something from scratch using C++. This course offers the opportunity to build the basic but classic Tic-Tac-Toe game, command-line style.

You’ll begin the course by looking at the end product and then building the game step-by-step, adding one tiny feature in each lesson. This way, you’ll add one or two helper functions to the codebase and then test them individually in the main controller function. Because of this modular approach, you’ll finish coding the game efficiently and professionally.

By the end of the course, you’ll have one complete hands-on project in C++ added to your profile.

Tic-Tac-Toe with C++

# What we have
We have our board to play the game. 

# Requirements of this module
We need input from the player (user/computer) to place a marker on the board. Our game has two modes, so we will need input from the user and the computer.

Let’s break down the process into two parts:

- User move

- Computer move

In the next few lessons, we will learn how to get input from the user and computer.

There are two modes (`1` and `2`) and two players (`X` and `O`). The computer move is needed when it’s a “one player” mode and the current player is “X”. In the other case, we need to input the move from the user. We should perform the following steps for this task:
- Write code for the function `getMove()`.
- Receive three parameters: `board`, `mode`, and `currentPlayer`.
- Declare a variable to store the new move of the player.
- Check whether it is a computer move or a user move.
- In case of computer move: 
   - Call the function `getComputerMove(board)` and store the resulting move.
   - Display a message on screen showing “Computer chose: ” and the move.
- In case of user move:
   - Call the function `getPlayerMove(currentPlayer, board)` and store the move.
  - Return the move stored in a local variable.

> **Note:** We should not worry about the details of subordinate functions (`getComputerMove(board)` and `getPlayerMove(currentPlayer, board)`) at this stage.

# Try it yourself
All the functions are already defined. You just have to implement the given function and execute the code.
 

Learn how to take input from the player (user/computer).

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Move Modules

What we have

Requirements of this module