fputs

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

C23 standard (ISO/IEC 9899:2024):

7.21.7.4 The fputs function (p: TBD)

C17 standard (ISO/IEC 9899:2018):

7.21.7.4 The fputs function (p: TBD)

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

Compiler support
Language
Headers
Type support
Program utilities
Variadic function support
Error handling
Dynamic memory management
Strings library
Algorithms
Numerics
Date and time utilities
Input/output support
Localization support
Concurrency support (C11)
Technical Specifications
Symbol index

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