Get a character from stdin
#include <stdio.h> int getchar_unlocked( void );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The getchar_unlocked() function is a thread-unsafe version of getchar(). You can use it safely only when the invoking thread has locked stdin using flockfile() (or ftrylockfile()) and funlockfile().
The next character from the input stream pointed to by stdin, cast as (int)(unsigned char), or EOF if an end-of-file or error condition occurs (errno is set).
POSIX 1003.1 TSF
feof(), ferror(), getc(), getc_unlocked(), getchar(), putc(), putc_unlocked(), putchar(), putchar_unlocked()