Step 1: Open Remix IDE

Go to Remix IDE in your browser.

Step 2: Create a New File

Click on the "File explorers" icon, then click the "+" icon to create a new file. Name it "HelloWorld.sol".

Step 3: Write Your Smart Contract

Copy and paste the following code into your file:

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

contract HelloWorld {
    string private greeting;
    
    constructor(string memory _greeting) {
        greeting = _greeting;
    }
    
    function setGreeting(string memory _greeting) public {
        greeting = _greeting;
    }
    
    function getGreeting() public view returns (string memory) {
        return greeting;
    }
}

Step 4: Compile the Contract

Click on the "Solidity compiler" icon in the left sidebar, then click "Compile HelloWorld.sol".

Step 5: Deploy the Contract

Click on the "Deploy & run transactions" icon in the left sidebar. In the "ENVIRONMENT" dropdown, select "Injected Provider - MetaMask". This will connect Remix to your MetaMask wallet.

Make sure your MetaMask is connected to SNFT testnet. In the "CONTRACT" dropdown, select "HelloWorld". In the "DEPLOY" section, enter an initial greeting (e.g., "Hello, SNFT!"), then click "Deploy".

MetaMask will prompt you to confirm the transaction. Click "Confirm" to deploy your contract.