//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.18; contract token{ address owner; mapping (address=>uint) balances; function transfer(address to,uint amount)public { require(balances[msg.sender]>=amount); balances[msg.sender] -= amount; balances[to] += amount; } } 0.4.18