contract CappedToken is MintableToken {
    uint256 public cap;

    function CappedToken (uint256 _cap) public {
        require(_cap > 0);
        cap = _cap;
    }

    /**
     * @dev Function to mint tokens
     * @param _to The address that will receive the minted tokens.
     * @param _amount The amount of tokens to mint.
     * @return A boolean that indicates if the operation was successful.
     */
    function mint(address _to, uint256 _amount) onlyOwner public returns (bool) {
        require(totalSupply.add(_amount) <= cap);

        return super.mint(_to, _amount);
    }
}
/**
 * @title Capped token
 * @dev Mintable token with a token cap.
 */
function mint(address _to, uint256 _amount) onlyOwner public returns (bool) {
    require(totalSupply.add(_amount) <= cap);

    return super.mint(_to, _amount);
}

/**
 * @dev Function to mint tokens
 * @param _to The address that will receive the minted tokens.
 * @param _amount The amount of tokens to mint.
 * @return A boolean that indicates if the operation was successful.
 */