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Write a character to stdout
#include <stdio.h>
int putchar_unlocked( int c );
- c
- The character that you want to write.
libc
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).
POSIX 1003.1 TSF
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
getc(),
getc_unlocked(),
getchar(),
getchar_unlocked(),
putc(),
putc_unlocked(),
putchar()
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