pragma solidity >=0.4.25 <0.6.0; import "./ConvertLib.sol"; // This is just a simple example of a coin-like contract. // It is not standards compatible and cannot be expected to talk to other // coin/token contracts. If you want to create a standards-compliant // token, see: https://github.com/ConsenSys/Tokens. Cheers! contract MetaCoin { mapping (address => uint) balances; event Transfer(address indexed _from, address indexed _to, uint256 _value); constructor() public { balances[tx.origin] = 10000; } function sendCoin(address receiver, uint amount) public returns(bool sufficient) { if (balances[msg.sender] < amount) return false; balances[msg.sender] -= amount; balances[receiver] += amount; emit Transfer(msg.sender, receiver, amount); return true; } function getBalanceInEth(address addr) public view returns(uint){ return ConvertLib.convert(getBalance(addr),2); } function getBalance(address addr) public view returns(uint) { return balances[addr]; } }