contract ERC20Interface {

    // Getters
    function totalSupply() public view returns (uint);

    function balanceOf(address tokenOwner) public view returns (uint balance);

    function allowance(address tokenOwner, address spender) public view returns (uint remaining);

    // Write the State
    function transfer(address to, uint tokens) public returns (bool success);

    function approve(address spender, uint tokens) public returns (bool success);

    function transferFrom(address from, address to, uint tokens) public returns (bool success);

    // Events
    event Transfer(address indexed from, address indexed to, uint tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);

}
function transfer(address to, uint tokens) public returns (bool success);

// Write the State