1
2pragma solidity ^0.8.0;
3contract Your_Contract Name {
4 string public name = "Your_Contract Name";
5 string public symbol = "Your_Contract Symbol";
6 uint8 public decimals = 18;
7 uint256 public totalSupply;
8 mapping(address => uint256) public balanceOf;
9 mapping(address => mapping(address => uint256)) public allowance;
10 event Transfer(address indexed from, address indexed to, uint256 value);
11 event Approval(address indexed owner, address indexed spender, uint256 value);
12 constructor() {
13 totalSupply = 1_000_000_000 * 10 ** uint256(decimals);
14 balanceOf[msg.sender] = totalSupply;
15 emit Transfer(address(0), msg.sender, totalSupply);
16 }
17 function transfer(address _to, uint256 _value) public returns (bool success) {
18 require(_to != address(0), "Invalid address");
19 require(balanceOf[msg.sender] >= _value, "Insufficient balance");
20 balanceOf[msg.sender] -= _value;
21 balanceOf[_to] += _value;
22 emit Transfer(msg.sender, _to, _value);
23 return true;
24 }
25 function approve(address _spender, uint256 _value) public returns (bool success) {
26 allowance[msg.sender][_spender] = _value;
27 emit Approval(msg.sender, _spender, _value);
28 return true;
29 }
30 function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
31 require(_to != address(0), "Invalid address");
32 require(balanceOf[_from] >= _value, "Insufficient balance");
33 require(allowance[_from][msg.sender] >= _value, "Allowance exceeded");
34 balanceOf[_from] -= _value;
35 balanceOf[_to] += _value;
36 allowance[_from][msg.sender] -= _value;
37 emit Transfer(_from, _to, _value);
38 return true;
39 }
