FPUTS(3) BSD Library Functions Manual FPUTS(3)NAME
fputs, puts — output a line to a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
int
fputs(const char *restrict s, FILE *restrict stream);
int
puts(const char *s);
DESCRIPTION
The function fputs() writes the string pointed to by s to the stream
pointed to by stream.
The function puts() writes the string s, and a terminating newline char‐
acter, to the stream stdout.
RETURN VALUES
The functions fputs() and puts() return a nonnegative integer on success
and EOF on error.
ERRORS
[EBADF] The stream argument is not a writable stream.
The functions fputs() and puts() may also fail and set errno for any of
the errors specified for the routines write(2).
COMPATIBILITYfputs() now returns a non-negative number (as opposed to 0) on successful
completion. As a result, many tests (e.g., "fputs() == 0", "fputs() !=
0") do not give the desired result. Use "fputs() != EOF" or "fputs() ==
EOF" to determine success or failure.
SEE ALSOferror(3), fputws(3), putc(3), stdio(3)STANDARDS
The functions fputs() and puts() conform to ISO/IEC 9899:1990
(“ISO C90”). While not mentioned in the standard, both fputs() and
puts() print ‘(null)’ if str is NULL.
BSD June 4, 1993 BSD
