fputc

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
       unsigned 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
       attributes(7).

       ┌──────────────────────────┬───────────────┬─────────┐
       │Interface                 Attribute     Value   │
       ├──────────────────────────┼───────────────┼─────────┤
       │fputc(), fputs(), putc(), │ Thread safety │ MT-Safe │
       │putchar(), puts()         │               │         │
       └──────────────────────────┴───────────────┴─────────┘
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C89, C99.

BUGS
       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.

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 5.00 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)