How do I design a c ++ program interface?

Answer 1

https://stackoverflow.com/questions/1186017/how-do-i-build-a-graphical-user-interface-in-c

Answer 2

There are plenty of free portable GUI libraries, each with its own strengths and weaknesses.
Example - Qt , GTK etc

Answer 3

https://medium.com/@osagienoah04/fathomable-JUMP_LINK__&&__python__&&__JUMP_LINK-programming-beginner-to-advance-d02bdc5474bc check it out and give it a clap. Thanks...