gistfile1.txt

 constructor() public {
    symbol = "EXAMPLE";
    name = "Example token";
    decimals = 18;
    supply = 21000000 * 10**uint(decimals);
    balances[owner] = supply;
    emit Transfer(address(0), owner, supply);
  }
  
   constructor() public {
    symbol = "EXAMPLE";
    name = "Example token";
    decimals = 18;
    supply = 21000000 * 10**uint(decimals);
    balances[owner] = supply;
    emit Transfer(address(0), owner, supply);
  }

  function totalSupply() constant public returns (uint256) {
    return supply;
  }

  function allowance(address _owner, address _spender) public constant
returns (uint256 remaining) {
    return allowances[_owner][_spender];
  }

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

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

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

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

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

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowances[_from][msg.sender] = allowances[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
  }