Your First Contract

If you don't know what a smart contract is, learn about it here.

Every Solidity file needs:

1. License Identifier: A comment at the top declaring the license.

Write: // SPDX-License-Identifier: MIT

2. Pragma Statement: Tells the compiler which Solidity version to use.

Write: pragma solidity ^0.8.0;

(The ^ means "0.8.0 or higher, but not 0.9.0+")

3. Contract Definition: Like a class in other languages.

Write: contract TicTacToe { }

Everything part of the contract will go inside the curly braces { }.

Create basic contract structure

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Requirements:

Includes MIT license identifier

Declares Solidity version ^0.8.0

Defines contract TicTacToe

Has matching braces { }

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