contract Faucet{

    //Give out ether to anyone who asks  

    function withdraw(unit withdraw_amount)public{

    //limit withdrawal amount

    require (withdraw_amount<=1000000000000000000);

    //Send the amout to the adress that requested it

    msg.sender.transfer(withdraw_amount);

    }

    //Accept any incoming amount

    function() public payable{}

}

老师，这个 Demo 有错嘛，怎么编译不过去[撇嘴]