Write a character to stdout
#include <stdio.h> int putchar_unlocked( int c );
- The character that you want to write.
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The putchar_unlocked() function is a thread-unsafe version of putchar() . You can use it safely only when the invoking thread has locked stdout using flockfile() (or ftrylockfile() ) and funlockfile() .
The character written, cast as (int)(unsigned char), or EOF if an error occurred (errno is set).