do anyone know how to write code that can run string from left to right of screen in C++ ? i can do it in c but in c++ it don't support delay(). i don't know it possible or not ,i want to run string at the same time i use MENU(switch) like this:

MENU
->1.INPUT
2.OUTPUT
[run words] HELLO

Most, if not all, of the solutions that you will find will be non-standard and depend on the operating system. Which platform are you using? To get something that can be used cross-platform, try looking into PDCurses (pdcurses.sourceforge.net).