pragma solidity ^0.4.23; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract TokenERC20 { string public name = "Litex Test Token"; // Set the name for display purposes string public symbol = "LTT"; // Set the symbol for display purposes uint8 public decimals = 18; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; uint256 initialSupply = 100000000000; // This crea...