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Casino.sol

pragma solidity ^0.5.1;
import "browser/Ownership.sol";
contract Casino is Mortal {
    uint minBet;
    uint houseEdge; //in %
    //true+amount or false+0
    event Won(bool _status, uint _amount);
    function CasinoF(uint _minBet, uint _houseEdge) payable public {
     require(_minBet > 0);
     require(_houseEdge <= 100);
     minBet = _minBet;
     houseEdge = _houseEdge;
     }
    function() external { //fallback
     revert();
     }
    function bet(uint _number) payable public {
     require(_number > 0 && _number <= 10);
     require(msg.value >= minBet);
     uint winningNumber = block.number % 10 + 1;
     if (_number == winningNumber) {
       uint amountWon = msg.value * (100 - houseEdge) / 10;
       if(!msg.sender.send(amountWon)) revert();
       emit Won(true, amountWon);
     } else {
       emit Won(false, 0);
     }
    }
    function checkContractBalance() Owned public view returns(uint) {
      return address(this).balance;
    } 
}

Ownership.sol

pragma solidity ^0.5.1;
contract Ownable {
 address payable owner;
 function OwnableF() public {
//Set owner to who creates the contract
 owner = msg.sender;
 }
//Access modifier 
modifier Owned {
 require(msg.sender == owner);
 _;
 }
}

contract Mortal is Ownable {
//Our access modifier is present, only the contract creator can      use this function
  function kill() public Owned { 
 selfdestruct(owner);
 }
}