Add network manually

Network Name：Arc Testnet New RPC URL：https://rpc.testnet.arc.network

Chain ID：5042002 Currency Symbol：USDC Block Explorer URL：https://testnet.arcscan.app

Automatically add network**:**

Open Arc browser

https://testnet.arcscan.app/

Scroll down to the bottom left corner and find "Add Arc Testent," then click to add a network.

Claim your Arc testnet faucet

https://faucet.circle.com/

二. Open Remix and write/load the contract

access https://remix.ethereum.org/

Find File Explorer in the left toolbar

After clicking in, find Contracts, right-click and select New File to create a new file. In this Arc document example, the file name is HelloArchitect.sol

Then paste the code into the opened blank page. Here, we'll use code from the Arc document as an example.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract HelloArchitect {
    string private greeting;

    // Event emitted when the greeting is changed
    event GreetingChanged(string newGreeting);

    // Constructor that sets the initial greeting to "Hello Architect!"
    constructor() {
        greeting = "Hello Architect!";
    }

    // Setter function to update the greeting
    function setGreeting(string memory newGreeting) public {
        greeting = newGreeting;
        emit GreetingChanged(newGreeting);
    }

    // Getter function to return the current greeting
    function getGreeting() public view returns (string memory) {
        return greeting;
    }
}

Then save with Ctrl+S.

三.Compile Contract

Click Solidity Compiler in the left toolbar.