fputs

 

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Atomic operations (C11)

Thread support (C11)

Technical Specifications

 

File input/output

Functions
File access
fopenfopen_s (C11) freopenfreopen_s (C11) fwide (C95)	setbuf setvbuf fclose fflush
Direct input/output
fread
fwrite
Unformatted input/output
fgetc fgets fputc fputs getchar getsgets_s (until C11)(since C11) putchar puts ungetc	fgetwcgetwc (C95)(C95) fgetws (C95) fputwcputwc (C95)(C95) fputws (C95) getwchar (C95) putwchar (C95) ungetwc (C95)
Formatted input
scanffscanfsscanfscanf_sfscanf_ssscanf_s (C11)(C11)(C11) wscanffwscanfswscanfwscanf_sfwscanf_sswscanf_s (C95)(C95)(C95)(C11)(C11)(C11)	vscanfvfscanfvsscanfvscanf_svfscanf_svsscanf_s (C99)(C99)(C99)(C11)(C11)(C11) vwscanfvfwscanfvswscanfvwscanf_svfwscanf_svswscanf_s (C99)(C99)(C99)(C11)(C11)(C11)
Formatted output
printffprintfsprintfsnprintfprintf_sfprintf_ssprintf_ssnprintf_s (C99)(C11)(C11)(C11)(C11) wprintffwprintfswprintfwprintf_sfwprintf_sswprintf_ssnwprintf_s (C95)(C95)(C95)(C11)(C11)(C11)(C11)	vprintfvfprintfvsprintfvsnprintfvprintf_svfprintf_svsprintf_svsnprintf_s (C99)(C11)(C11)(C11)(C11) vwprintfvfwprintfvswprintfvwprintf_svfwprintf_svswprintf_svsnwprintf_s (C95)(C95)(C95)(C11)(C11)(C11)(C11)
File positioning
ftell
fgetpos
fseek
fsetpos
rewind
Error handling
clearerr
feof
ferror
perror
Operations on files
remove
rename
tmpfiletmpfile_s (C11)
tmpnamtmpnam_s (C11)

 

Defined in header <stdio.h>
int fputs( const char          *str, FILE          *stream );		(until C99)
int fputs( const char *restrict str, FILE *restrict stream );		(since C99)

Writes every character from the null-terminated string str to the output stream stream, as if by repeatedly executing fputc.

The terminating null character from str is not written.

Parameters

str	-	null-terminated character string to be written
stream	-	output stream

Return value

On success, returns a non-negative value

On failure, returns EOF and sets the error indicator (see ferror()) on stream.

Notes

The related function puts appends a newline character to the output, while fputs writes the string unmodified.

Different implementations return different non-negative numbers: some return the last character written, some return the number of characters written (or INT_MAX if the string was longer than that), some simply return a non-negative constant such as zero.

Example

Run this code

#include <stdio.h>
 
int main(void)
{
    int rc = fputs("Hello World", stdout);
 
    if (rc == EOF)
       perror("fputs()"); // POSIX requires that errno is set
}

Output:

Hello World

References

• C11 standard (ISO/IEC 9899:2011):

• 7.21.7.4 The fputs function (p: 331-332)

• C99 standard (ISO/IEC 9899:1999):

• 7.19.7.4 The fputs function (p: 297)

• C89/C90 standard (ISO/IEC 9899:1990):

• 4.9.7.4 The fputs function

See also

printffprintfsprintfsnprintfprintf_sfprintf_ssprintf_ssnprintf_s (C99)(C11)(C11)(C11)(C11)	prints formatted output to stdout, a file stream or a buffer (function)
puts	writes a character string to stdout (function)
fgets	gets a character string from a file stream (function)
C++ documentation for fputs