Use tmpfile function to read/write temporary file

Syntax

C tmpfile function has the following syntax.

Header

C tmpfile function is from header file stdio.h.

Description

C tmpfile function opens a temporary binary file for read/write operations and returns a pointer to the stream.

C tmpfile function returns a null pointer on failure.

The temporary file created by tmpfile() is automatically removed when the file is closed or when the program terminates.

You can open TMP_MAX temporary files (up to the limit set by FOPEN_MAX).

Example

C tmpfile function creates a temporary file

#include <stdio.h>
/* ww  w  . j a  va2  s.  com*/
int main(void){
  FILE *temp;
  if((temp=tmpfile())==NULL) {
    printf("Cannot open temporary work file.\n");
    exit(1);
  }
}