Computer Science
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);
int ungetc(int c, FILE *stream);
DESCRIPTION
fputc() writes the character c, cast to an unsigned char,
to stream.
fputs() writes the string s to stream, without its trail-
ing '\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 std-
out.
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.
RETURN VALUES
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 non - negative number on suc-
cess, or EOF on error.
CONFORMING TO
ANSI - C, POSIX.1
BUGS
It is not advisable to mix calls to output functions from
the stdio library with low - level calls to write() 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), fopen(3), fwrite(3), scanf(3), gets(3),
fseek(3), ferror(3)
GNU April 4, 1993 1
Back to the index