MCP Ethers Wallet
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
contract TestToken {
string public name = "MyToken";
string public symbol = "MCP";
uint8 public decimals = 18;
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
constructor() {
totalSupply = 1000000 * 10**uint256(decimals);
balanceOf[msg.sender] = totalSupply;
}
function transfer(address to, uint256 value) public returns (bool success) {
require(balanceOf[msg.sender] >= value, "insufficient balance");
balanceOf[msg.sender] -= value;
balanceOf[to] += value;
emit Transfer(msg.sender, to, value);
return true;
}
function approve(address spender, uint256 value) public returns (bool success) {
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value) public returns (bool success) {
require(balanceOf[from] >= value, "insufficient balance");
require(allowance[from][msg.sender] >= value, "exceeds allowance");
balanceOf[from] -= value;
balanceOf[to] += value;
allowance[from][msg.sender] -= value;
emit Transfer(from, to, value);
return true;
}
function mint(address to, uint256 value) public {
balanceOf[to] += value;
totalSupply += value;
emit Transfer(address(0), to, value);
}
}