FundMeSolidityProject

This repository contains the source code for Crowdfunding project.

FundMe Contract

This is a Solidity smart contract for managing a funding pool where individuals can contribute funds in Ether (ETH). The contract ensures that contributions meet a minimum threshold, tracks contributors and their contributions, and allows the owner to withdraw collected funds.

SPDX-License-Identifier

This contract is licensed under the MIT License.

Prerequisites

• Solidity Compiler version 0.8.0 or higher
• ethToUSD.sol file for converting Ether to USD

Installation

1. Clone this repository.
2. Compile the contract using the Solidity compiler.
3. Deploy the compiled contract to a compatible Ethereum blockchain network.

Usage

Functions

1. fund():

   • Allows users to contribute funds in Ether to the contract.
   • Requires the contributed amount to be greater than or equal to the minimum amount specified (20 USD).
   • Converts the received Ether amount to USD before recording the contribution.

2. withdrawFunds():

   • Allows the owner (manager) to withdraw all the funds collected in the contract.
   • Transfers the entire balance of the contract to the owner's address.
   • Clears the list of funders and resets their contribution amounts.

3. getEthAmountInUsd(uint256 ethers):

   • Accepts an amount in Ether and returns its equivalent value in USD.

Modifiers

• onlyOwner:
  • Ensures that only the manager (contract owner) can execute certain functions.

Receive and Fallback Functions

• receive():

  • Automatically called when Ether is sent to the contract.
  • Redirects the received Ether to the fund() function.

• fallback():

  • Same as receive() function to capture any fallback calls.

import "./ethToUSD.sol";

contract FundMe { // Contract state variables and functions }