🧮 Counter Smart Contract

A simple smart contract that implements a basic counter functionality with the ability to increment, decrement, and reset its value.

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🪧 Project Overview

The Counter Smart Contract is a minimal Solidity project demonstrating how to manage and update state variables on-chain.
It serves as a foundational example for developers exploring Flow EVM Testnet and learning how to deploy, interact with, and test Ethereum-compatible smart contracts.

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🌐 Network Details

• Built on: Flow EVM Testnet
• Contract Address: 0x580fbcAF0a8400A2C5C8aD1ea646F36A93D3A7fC

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⚙️ Tech Stack

Component	Description
Solidity	Smart contract programming language
Remix IDE / Hardhat	Development and deployment tools
Flow EVM Testnet	EVM-compatible blockchain network used for deployment
MetaMask	Wallet for managing testnet accounts and transactions
EtherScan (FlowScan)	Explorer for verifying deployed contracts

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🧾 Smart Contract

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

contract Counter {
    uint256 public count;

    function getCount() public view returns (uint256) {
        return count;
    }

    function increment() public {
        count += 1;
    }

    function decrement() public {
        require(count > 0, "Counter cannot go below zero");
        count -= 1;
    }

    function reset() public {
        count = 0;
    }
}

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🚀 Deployment (Remix IDE - Flow EVM Testnet)

1. Open Remix IDE.
2. Create a file named Counter.sol and paste the code above.
3. Go to the Solidity Compiler tab and compile the contract (version 0.8.x).
4. In Deploy & Run Transactions, set the Environment to “Injected Provider - MetaMask”.
5. Connect your MetaMask wallet to Flow EVM Testnet.
6. Click Deploy and copy your deployed contract address (0x580fbcAF0a8400A2C5C8aD1ea646F36A93D3A7fC).

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🧠 How It Works

• count → A state variable storing the counter value.
• increment() → Increases the counter by one.
• decrement() → Decreases the counter by one (checks if count > 0).
• reset() → Resets the counter to zero.
• getCount() → Returns the current count value.

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🔮 Future Improvements

• Add event emitters for Incremented, Decremented, and Reset.
• Introduce access control (only owner can modify counter).
• Implement batch operations or multi-user counters.
• Build a simple frontend (React + Ethers.js) to interact with the contract visually.
• Store and visualize transaction history on-chain.

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🪪 License

This project is licensed under the MIT License.