_fileno

Remonter à Stdio.h - Index

Header File

stdio.h

Category

Input/output Routines

Prototype

int _fileno(FILE *stream);

Description

Gets the file handle.

_fileno is a macro that returns the file handle for the given stream. If stream has more than one handle _fileno returns the handle assigned to the stream when it was first opened.

Return Value

_fileno returns the integer file handle associated with stream.

Example

 #include <stdio.h>
 int main(void)
 {
    FILE *stream;
    int handle;
    /* create a file */
    stream = fopen("DUMMY.FIL", "w");
    /* obtain the file handle associated with the stream */
    handle = fileno(stream);
    /* display the handle number */
    printf("handle number: %d\n", handle);
    /* close the file */
    fclose(stream);
    return 0;
 }

Portability

POSIX	Win32	ANSI C	ANSI C++
+	+