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pmEtherBox.sol

pragma solidity ^0.4.17;

// https://programtheblockchain.com/posts/2017/12/15/writing-a-contract-that-handles-ether/
// https://colab.research.google.com/drive/1S860CGKebS9MxuzmdaQjpnbpBnYc0Ag3?usp=sharing

contract pmEtherBox {
    
    string msgWithdrawn = 'Withdrawn';
    string msgDeposit = 'Deposit';
    string msgBalance = 'Current Balance';
    string msgSentTo = 'Sent To';
//    address Beneficiary;
    
    event LogStatus   (uint i1, string s1, uint i2, string s2);
    event LogStatus2   (uint i1, string s1, address B, uint i2, string s2);
    
    function pullOut(uint amount) public {
        msg.sender.transfer(amount);
        emit LogStatus(amount,msgWithdrawn,address(this).balance, msgBalance);
    } 
    
    function sendTo(uint amount, address Beneficiary) public {
        Beneficiary.transfer(amount);
        emit LogStatus2(amount,msgSentTo, Beneficiary, address(this).balance, msgBalance);
    } 

    
    function putIn(uint amount) payable public {
        require(msg.value == amount);
        emit LogStatus(amount,msgDeposit,address(this).balance, msgBalance);
        // nothing else to do!
    }
    
    function getBalance() public view returns (uint256) {
        return address(this).balance;
    }
}