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Background: I'm working on a program that needs to be able to capture the stdout , stderr and return values of a program. Ideally, I would like to capture these in a string that I store inside of my object that holds details of the process. I currently have some code that works by saving the output into a file using some (in my opinion) archaic C file handle magic. Any time I want to output the results, I open up that file and I print the contents. Sometimes (when a process I spawn is left running) the next execution of my executable will break down because it cannot open the file for writing. Problem Statement: I'm looking for a way to save the output from stdout of a created process in windows to one string and the stderr to another in a safer, more modern fashion. That way I could print those contents any time I feel like outputting the result of each created process. My ugly code: main chunk- int stdoutold = _dup(_fileno(stdout)); //make a copy of stdout int stderrold = _dup(_fileno(stdout)); //make a copy of stderr FILE *f; if(!fopen_s(&f, "name_of_my_file", "w")){ //make sure I can write to the file _dup2(_fileno(f), _fileno(stdout)); //make stdout point to f _dup2(_fileno(f), _fileno(stderr)); //make stderr point to f fork("command_I_want_to_run", &pi); //run my fake fork (see below) } else{ ...//error handling } _close(_fileno(stdout)); //close tainted stdout _close(_fileno(stderr)); //close tainted stderr _close(_fileno(f)); //close f _dup2(stdoutold, _fileno(stdout)); //fix stdout _dup2(stderrold, _fileno(stderr)); //fix stderr fork- (you can think of this as just CreateProcess, but just in case anyone needs to see what happens he

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