fprintf()

Write output to a stream

Synopsis:

#include <stdio.h>

int fprintf( FILE* fp, 
             const char* format, 
             ... );

Library:

libc

Description:

The fprintf() function writes output to the stream specified by fp, under control of the format specifier. The format string is the same as the one used by printf().

Returns:

The number of characters written for success, or a negative value if an output error occurred.

Errors:

If an error occurs, errno is set to indicate the type of error.

Examples:

#include <stdio.h>
#include <stdlib.h>

char *weekday = { "Saturday" };
char *month = { "April" };

int main( void )
{
    fprintf( stdout, "%s, %s %d, %d\n",
        weekday, month, 10, 1999 );
        
    return EXIT_SUCCESS;
}

Produces:

Saturday, April 10, 1999

Classification:

ANSI

See also:

errno, printf(), sprintf(), vfprintf(), vprintf(), vsprintf()