How do I prevent holding when reading stdin?

[Mr.UNOwen]

How do I prevent holding when reading stdin?

I'm creating a program with glut that uses the terminal for input and using fscanf() is holding up the process. How can I check the stream before calling fscanf()?

[gerard4143]

You could try googling non-blocking I/O.

[L7Sqr]

Using select is a viable approach on some systems. There are other input query mechanisms on other platforms. What system are you operating in?

[Mr.UNOwen]

Found a solution:
http://stackoverflow.com/questions/717572/c-nonblocking-io-on-linux

Earlier I was googling non-holding rather than non-blocking, which didn't give me that helpful of a result.