puts(3) - Linux manual page (original) (raw)
puts(3) Library Functions Manual puts(3)
NAME top
fputc, fputs, putc, putchar, puts - output of characters and
stringsLIBRARY top
Standard C library (_libc_, _-lc_)SYNOPSIS top
**#include <stdio.h>**
**int fputc(int** _c_**, FILE ***_stream_**);**
**int putc(int** _c_**, FILE ***_stream_**);**
**int putchar(int** _c_**);**
**int fputs(const char *restrict** _s_**, FILE *restrict** _stream_**);**
**int puts(const char ***_s_**);**DESCRIPTION top
**fputc**() writes the character _c_, cast to an _unsigned char_, to
_stream_.
**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_**)**.
**fputs**() writes the string _s_ to _stream_, without its terminating
null byte ('\0').
**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)](../man3/unlocked%5Fstdio.3.html).RETURN VALUE top
**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.ATTRIBUTES top
For an explanation of the terms used in this section, see
[attributes(7)](../man7/attributes.7.html).
┌──────────────────────────────────────┬───────────────┬─────────┐
│ **Interface** │ **Attribute** │ **Value** │
├──────────────────────────────────────┼───────────────┼─────────┤
│ **fputc**(), **fputs**(), **putc**(), **putchar**(), │ Thread safety │ MT-Safe │
│ **puts**() │ │ │
└──────────────────────────────────────┴───────────────┴─────────┘STANDARDS top
C11, POSIX.1-2008.HISTORY top
POSIX.1-2001, C89, C99.BUGS top
It is not advisable to mix calls to output functions from the
_stdio_ library with low-level calls to [write(2)](../man2/write.2.html) for the file
descriptor associated with the same output stream; the results
will be undefined and very probably not what you want.SEE ALSO top
[write(2)](../man2/write.2.html), [ferror(3)](../man3/ferror.3.html), [fgets(3)](../man3/fgets.3.html), [fopen(3)](../man3/fopen.3.html), [fputwc(3)](../man3/fputwc.3.html), [fputws(3)](../man3/fputws.3.html),
[fseek(3)](../man3/fseek.3.html), [fwrite(3)](../man3/fwrite.3.html), [putwchar(3)](../man3/putwchar.3.html), [scanf(3)](../man3/scanf.3.html), [unlocked_stdio(3)](../man3/unlocked%5Fstdio.3.html)COLOPHON top
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man-pages@man7.orgLinux man-pages 6.10 2024-07-23 puts(3)
Pages that refer to this page:curs_addch(3x), curs_termcap(3x), curs_terminfo(3x), fgetc(3), flockfile(3), fputwc(3), fputws(3), gets(3), getw(3), printf(3), putwchar(3), setbuf(3), stdio(3)