fputc, fputs, putc, putchar, puts - output of characters and strings
#include <stdio.h>
int fputc(int c, FILE *stream);
int fputs(const char *s, FILE *stream);
int putc(int c, FILE *stream);
int putchar(int c);
int puts(const char *s);
fputc() writes the character
c, cast to an
unsigned char,
to
stream.
fputs() writes the string
s to
stream, without its
terminating null byte ('\0').
putc() is equivalent to
fputc() except that it may be implemented
as a macro which evaluates
stream more than once.
putchar(c) is equivalent to
putc(c,
stdout).
puts() writes the string
s and a trailing newline to
stdout.
Calls to the functions described here can be mixed with each other and with
calls to other output functions from the
stdio library for the same
output stream.
For nonlocking counterparts, see
unlocked_stdio(3).
fputc(),
putc() and
putchar() return the character written
as an
unsigned char cast to an
int or
EOF on error.
puts() and
fputs() return a nonnegative number on success, or
EOF on error.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| fputc (), fputs (), putc (), putchar (), puts () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008, C89, C99.
It is not advisable to mix calls to output functions from the
stdio
library with low-level calls to
write(2) for the file descriptor
associated with the same output stream; the results will be undefined and very
probably not what you want.
write(2),
ferror(3),
fgets(3),
fopen(3),
fputwc(3),
fputws(3),
fseek(3),
fwrite(3),
putwchar(3),
scanf(3),
unlocked_stdio(3)