I have been using the code...
while (getchar() != '\n');
...to clear everything in stdin in my programs. However, I am running into a slight issue on some occasions. There are times in my programs where when I call getchar(), there may or may not be anything in stdin. When it is the case that there is nothing in stdin, what ends up happening is getchar() is called and it is waiting for something in stdin. I then have to enter \n on my keyboard otherwise the program is just stuck on that one line. I am wondering if there is a simple way to first check if stdin is empty before doing while (getchar() != '\n'); in order to avoid this problem?
Not sure if the compiler matters for the answer, but I am using Visual Studio 2017.