erc20Token.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.4;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";

contract Erc20Token is ERC20("Chop I Chop", "CIC") {
    address owner;

    constructor() {
        owner = msg.sender;
        _mint(address(this), 10000e18);
    }

    function withdraw(address _address, uint amount) external {
        require(msg.sender == owner, "Not owner");
        require(_address != address(0), "Can't withdraw to zero address");

        uint balance = balanceOf(address(this));
        require(balance >= amount, "Insufficient funds in contract");

        _transfer(address(this), _address, amount);
    }
}