Simple calculator written in c++ language by Qusai Hroub.
This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, version 3, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.