I need a C++ Programmer to solve my problem

want to achieve nonblocking read from stdin with C++ in Windows. I have 2 applications written in C++. Applications A (parent) and the spawned applications B process (child). The idea is that Applications A will send some text with stdin to Applications B. Then Applications B must read character by character in nonblocking way. My issue is not with Applications A, but with applications B. - Your task is to explain how to make Applications B read character by character in nonblocking way and make working code from scratch how that is done correct in Windows environment with C++. -It was possible for me to achieve this in Mac environment by using: fcntl and read functions.