C Tutorial/stdio.h/tmpfile

tmpfile

Item Value Header file stdio.h Declaration FILE *tmpfile(void); Function opens a temporary binary file for read/write operations and returns a pointer to the stream. Return 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).

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