Solidity-Practice/Events.sol at master · guerrasz/Solidity-Practice · GitHub

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//SPDX-License-Identifier: MIT

pragma solidity 0.8.15;

contract Events {
    mapping(address => uint) public tokenBalance;

    event TokensSent(address from, address to, uint amount);

    constructor() {
        tokenBalance[msg.sender] = 100;
    }

    function sendToken(address to, uint amount) public returns(bool) {
        require(tokenBalance[msg.sender] >= amount, "Not enough tokens");
        tokenBalance[msg.sender] -= amount;
        tokenBalance[to] += amount;

        emit TokensSent(msg.sender, to, amount);

        return true;
    }
}