reading the stdout and/or stderr

[honae]

Can anyone tell how a read the stdout in c or c++?

[philkr]

You cannot read it, because it is an output. The only thing you can do is to redirect it to a file or a pipe.

[honae]

what I'm trying to do is call a program a catch its output whithout redirecting to a file. it is possible?How can I do this?

[NoHero]

The following links shall help you:

http://www.codeguru.com/forum/showthread.php?t=337227
http://www.codeguru.com/Cpp/misc/misc/article.php/c277

Especially the MSDN example:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/creating_a_child_process_with_redirected_input_and_output.asp