/**
 *Submitted for verification at Etherscan.io on 2019-06-27
*/

pragma solidity ^0.5.2;

contract ERC20 {
  function balanceOf(address who) public view returns (uint256);
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  function transfer(address to, uint value) public returns(bool);
  event Transfer(address indexed from, address indexed to, uint value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}


contract Bet_Chips is ERC20 {
    
    string internal _name;
    string internal _symbol;
    uint8 internal _decimals;
    uint256 internal _totalSupply;

    mapping (address => uint256) internal balances;
    mapping (address => mapping (address => uint256)) internal allowed;

    constructor() public {
        _symbol = "BetC";  
        _name = "Bet Chips"; 
        _decimals = 4; 
        _totalSupply = 900000000* 10**uint(_decimals);
        balances[msg.sender] = _totalSupply;
    }
    
    function mul(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        if (a == 0) {
        return 0;}
        uint256 c = a * b;
        assert(c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        uint256 c = a / b;
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }

    function name() public view returns (string memory) 
    {
        return _name;
    }

    function symbol() public view returns (string memory) 
    {
        return _symbol;
    }

    function decimals() public view returns (uint8) 
    {
        return _decimals;
    }

    function totalSupply() public view returns (uint256) 
    {
        return _totalSupply;
    }

   function transfer(address _to, uint256 _value) public returns (bool) {
     require(_to != address(0));
     require(_value <= balances[msg.sender]);
     balances[msg.sender] = sub(balances[msg.sender], _value);
     balances[_to] = add(balances[_to], _value);
     emit ERC20.Transfer(msg.sender, _to, _value);
     return true;
   }

  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
   }

  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
     require(_to != address(0));
     require(_value <= balances[_from]);
     require(_value <= allowed[_from][msg.sender]);

    balances[_from] = sub(balances[_from], _value);
    balances[_to] = add(balances[_to], _value);
    allowed[_from][msg.sender] = sub(allowed[_from][msg.sender], _value);
    emit ERC20.Transfer(_from, _to, _value);
     return true;
   }

   function approve(address _spender, uint256 _value) public returns (bool) {
     allowed[msg.sender][_spender] = _value;
    emit ERC20.Approval(msg.sender, _spender, _value);
     return true;
   }

  function allowance(address _owner, address _spender) public view returns (uint256) {
     return allowed[_owner][_spender];
   }

   function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
     allowed[msg.sender][_spender] = add(allowed[msg.sender][_spender], _addedValue);
    emit ERC20.Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
     return true;
   }

  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
     uint oldValue = allowed[msg.sender][_spender];
     if (_subtractedValue > oldValue) {
       allowed[msg.sender][_spender] = 0;
     } else {
       allowed[msg.sender][_spender] = sub(oldValue, _subtractedValue);
    }
     emit ERC20.Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
     return true;
   }

}

{
  "compilationTarget": {
    "Bet_Chips.sol": "Bet_Chips"
  },
  "evmVersion": "byzantium",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}