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bank.sol
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bank.sol
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pragma solidity ^0.6.11;
contract SimpleBank {
mapping (address => uint) private balances;
address public owner;
event LogDepositMade(address accountAddress, uint amount);
constructor () public {
owner = msg.sender;
}
function deposit() public payable returns (uint) {
require((balances[msg.sender] + msg.value) >= balances[msg.sender]);
balances[msg.sender] += msg.value;
emit LogDepositMade(msg.sender, msg.value); // fire event
return balances[msg.sender];
}
function withdraw(uint withdrawAmount) public returns (uint remainingBal) {
require(withdrawAmount <= balances[msg.sender]);
balances[msg.sender] -= withdrawAmount;
msg.sender.transfer(withdrawAmount);
return balances[msg.sender];
}
function balance() view public returns (uint) {
return balances[msg.sender];
}
}