c - How to redirect the output back to the screen after freopen("out.txt", "a", stdout)

Question

#include <stdio.h>

int main() {
    printf("This goes to screen
");
    freopen("out.txt", "a", stdout);
    printf("This goes to out.txt");
    freopen("/dev/stdout", "a", stdout);
    printf("This should go to screen too, but doesn't
");

    return 0;
}

I call freopen to redirect the stdout to out.txt then I print something on the file, now I want to redirect it back to the screen, but freopen("/dev/stdout", "a", stdout); doesn't work. Is there any way to do that using ANSI C or POSIX system calls?

Answer 1

Unfortunately, there doesn't seem to be a good way:

http://c-faq.com/stdio/undofreopen.html

The best recommendation is not to use freopen in this circumstance.