tmpfile_s
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Header File
stdio.h
Category
Input/output Routines
Prototype
errno_t tmpfile_s(FILE * restrict * restrict streamptr);
Description
Replaces tmpfile adding security enhancements.
tmpfile_s creates a temporary binary file and opens it for update ("wb+"). If you do not change the directory after creating the temporary file, the file is automatically removed when it is closed or when your program terminates. If the program terminates abnormally, the file is not automatically removed. It is your responsability to remove it if necessary.
Return Value
tmpfile_s returns zero if the temporary file was created successfully, otherwise returns the respective error code. Also, if the temporary file was created successfully, streamptr holds the value pointing to the newly created file, otherwise streamptr is set to null.
Example
#include <stdio.h>
#include <process.h>
int main(void)
{
FILE *tempf;
if(tmpfile_s(&tempf)){
printf("Unable to create temporary file\n");
exit(1);
}
else {
printf("Temporary file created\n");
}
return 0;
}
Portability
| POSIX | Win32 | ANSI C | ANSI C++ |
|---|---|---|---|
|
+ |
+ |
+ |
+ |