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puts(3)

PUTS(3)                    Linux Programmer's Manual                   PUTS(3)

NAME
       fputc, fputs, putc, putchar, puts - output of characters and strings

SYNOPSIS
       #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);

DESCRIPTION
       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).

RETURN VALUE
       fputc(),  putc()  and  putchar() return the character written as an un‐
       signed char cast to an int or EOF on error.

       puts() and fputs() return a nonnegative number on success,  or  EOF  on
       error.

ATTRIBUTES
       For  an  explanation  of  the  terms  used in this section, see attrib‐
       utes(7).  allbox; lbw25 lb lb  l  l  l.   Interface Attribute Value  T{
       fputc(), fputs(), putc(), putchar(), puts() T}   Thread safety  MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C89, C99.

BUGS
       It is not advisable to mix calls to output functions from the stdio li‐
       brary  with low-level calls to write(2) for the file descriptor associ‐
       ated with the same output stream; the results  will  be  undefined  and
       very probably not what you want.

SEE ALSO
       write(2),   ferror(3),   fgets(3),   fopen(3),   fputwc(3),  fputws(3),
       fseek(3), fwrite(3), putwchar(3), scanf(3), unlocked_stdio(3)

COLOPHON
       This page is part of release 5.02 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.

GNU                               2018-04-30                           PUTS(3)
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