Function Parameters

Functions can accept inputs called parameters. This lets you pass data into the function.

Syntax:

function name(type paramName) public { }

Example:

function setPlayer(address _player) public { }

• address - The parameter type

• _player - The parameter name (underscore is convention for parameters)

Let's add a parameter to our startGame function so we can specify the opponent.

Change: function startGame(address _opponent) public { }

Add parameter to startGame

33%

Requirements:

Has address parameter

Parameter named _opponent

Still marked as public

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract TicTacToe {
    address public playerX;
    address public playerO;

    enum Cell { Empty, X, O }

    Cell[9] public board;

    function startGame() public {

    }
}