scientific calculator code by C language

I want you to give me acode of scientific calculator by C programing language . this is my homework so I need help from you . thanks best wishes ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site). ## Platform I need the code of scientific calculator by C language