tmpfile - create temporary file

Syntax	#include <stdio.h> FILE *tmpfile(void);
Description	tmpfile() creates a temporary file and opens an associated data stream. BS2000 tmpfile() creates a binary SAM file with default attributes. (End) The file is automatically deleted when all links to the file are closed. The file is opened as in fopen() for update (w+). The directory in which the temporary file will be created, {P_tmpdir}, is defined in stdio.h as /var/tmp.
Return val.	Pointer to the stream for the created file
		if successful.
	Null pointer	if an error occurs. errno is set to indicate the error.
Errors	tmpfile() will fail if:
	EINTR	A signal was caught when executing the tmpfile() function.
	EMFILE	{OPEN_MAX} streams are currently open in the calling process. {FOPEN_MAX} streams are currently open in the calling process.
	ENFILE	The maximum number of files allowed is currently open in the system.
	ENOSPC	The directory or file system which would contain the new file cannot be expanded.
Notes	The program environment determines whether tmpfile() is executed for a BS2000 or POSIX file. Temporary files are not deleted when a program terminates abnormally with abort() or _exit(-1).
See also	fopen(), tmpnam(), unlink(), stdio.h.