The Borland Turbo C++ compiler supports "conio.h," but the GCC compiler doesn't. Beginner C/C++ programmers and some books use this file, but it isn't recommended to use it in your software/application. To write portable C language programs, don't use this file. There are also many other header files similar to this one. Online C Compiler, Online C Editor, Online C IDE, Online C REPL, Online C Coding, Online C Interpreter, Execute C Online, Run C Online, Compile C Online, Online C Debugger, Execute C Online, Online C Code, Build C apps, Host C apps, Share C code.