C library function - tmpfile()

Description

The C library function FILE *tmpfile(void) creates a temporary file in binary update mode (wb+). The temporary file created is automatically deleted when the stream is closed (fclose) or when the program terminates.

Declaration

Following is the declaration for tmpfile() function.

FILE *tmpfile(void)

Parameters

• NA

Return Value

If successful, the function returns a stream pointer to the temporary file created. If the file cannot be created, NULL is returned.

Example

The following example shows the usage of tmpfile() function.

#include <stdio.h>

int main ()
{
   FILE *fp;

   fp = tmpfile();
   printf("Temporary file created\n");

   /* you can use tmp file here */

   fclose(fp);

   return(0);
}

Let us compile and run the above program, it will create a temporay file in /tmp folder but once your program is out, it will be deleted automatically and program will produce the following result:

Temporary file created