how to flush stdin buffer in linux

[Niroj Pokhrel]

Hi all,
I tried to use fflush(stdin) in gcc as I used to in other compilers. But It
didn't clear my buffer so I am wondering how can I clear the stdin buffer
in GCC.
I tried using lseek but got -EPIPE (as tty devices doesn't support lseek
operation).
Thanx in advance.
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