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Hi, all.
I am coding in C on Linux, and using an external library provided by others. This library generates a batch of error/warning messages to stdout, which I do not want to see.
Before each function call to the external library, I can insert the following:

1. freopen('/dev/null', 'w', stdout);

However, after the function call I cannot figure out how to reroute stdout to the console.
I tried early in the program defining:

1. FILE *fConsole = stdout;

and then following the function call with

1. freopen(fConsole, 'w', stdout);

I also tried following the function call with

1. freopen('CON', 'w', stdout);

Neither worked; all subsequent messages written to stdout continue to go to /dev/null; that is, they disappear.
So.. how do I get the stdout messages back to the console after my external function has executed?
Thanks!

Hi,
Try this idea.
1)Open a file in write mode
2)use dup system call to swap the file descriptor to stdout
3)Open a file in write mode
4)use dup system call to swap the file descriptor to stderr
5)call ur functions/library
6)restore the file descriptor back to stdout and stderr.
7)close the file
u have to use open call instead of fopen for this.
Hope this helps u
Raghuram