//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.18; interface tokenRecipient { function receiveApproval( address _from, uint256 _value, address _token, bytes _extraData ) public; } contract ERC20Token { string public name; string public symbol; uint8 public decimals; 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 Burn(address indexed from, uint256 value); function ERC20Token( string _tokenName, string _tokenSymbol, uint8 _decimals, uint256 _totalSupply ) public { name = _tokenName; symbol = _tokenSymbol; decimals = _decimals; totalSupply = _totalSupply * 10**uint256(decimals); balanceOf[msg.sender] = totalSupply; } function _transfer( address _from, address _to, uint256 _value ) internal { require(_to != 0x0); require(_from != 0x0); require(_from != _to); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value > balanceOf[_to]); uint256 previousBalances = balanceOf[_from] + balanceOf[_to]; balanceOf[_from] -= _value; balanceOf[_to] += _value; Transfer(_from, _to, _value); assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } function transfer(address _to, uint256 _value) public { _transfer(msg.sender, _to, _value); } function transferFrom( address _from, address _to, uint256 _value ) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; return true; } function approveAndCall( address _spender, uint256 _value, bytes _extraData ) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; Burn(msg.sender, _value); return true; } function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; Burn(_from, _value); return true; } }
0.4.18