//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.18; contract EtherStore { uint256 public withdrawalLimit = 1 ether; mapping(address => uint256) public lastWithdrawTime; mapping(address => uint256) public balances; function depositFunds() external payable { balances[msg.sender] += msg.value; } function withdrawFunds (uint256 _weiToWithdraw) public { require(balances[msg.sender] >= _weiToWithdraw); // limit the withdrawal require(_weiToWithdraw <= withdrawalLimit); // limit the time allowed to withdraw require(now >= lastWithdrawTime[msg.sender] + 1 weeks); require(msg.sender.call.value(_weiToWithdraw)()); balances[msg.sender] -= _weiToWithdraw; lastWithdrawTime[msg.sender] = now; } } 0.4.18