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 character, 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).
COMPATIBILITY
fputs() 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 ALSO
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.