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copied!<p>I assume that you're putting the <code>| tee.exe output.txt</code> string in the project property "Debugging | Command Argument".</p> <p>Unfortunately, that property only supports the redirection operators, not the pipe operator. If you have the <code>| tee.exe output.txt</code> string in the preoperty and run a program that dumps the command line arguments, you'll see that that information is just passed on as the arguments. The "Debugging | Command Argument" doesn't actually get processed by a full-fledged shell (such as <code>cmd.exe</code>) - it's just the IDE supporting some simple redirection (actually, it seems to support more than I expected):</p> <p>From <a href="http://msdn.microsoft.com/en-us/library/kcw4dzyf.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/kcw4dzyf.aspx</a>:</p> <pre><code>You can use the following redirection operators in this box: < file Reads stdin from file. > file Writes stdout to file. >> file Appends stdout to file. 2> file Writes stderr to file. 2>> file Appends stderr to file. 2> &1 Sends stderr (2) output to same location as stdout (1). 1> &2 Sends stdout (1) output to same location as stderr (2). </code></pre> <p>You can have a limited version of what you're looking for by redirecting the program's output to a file using <code>>></code> and using a <code>tail-f</code> command to display whatever gets added to the file. If you do this you'll probably want to call <code>setvbuf( stdout, NULL, _IONBF, 0 )</code> first thing in <code>main()</code> so that I/O is unbuffered. Otherwise <code>tail -f</code> won't see it until the buffer gets flushed, and I imagine that you'd like to see each output operation as it occurs.</p> <p>Another option is to crank the console window's "Screen Buffer Height" property up to a large number - one of the first things I do when I get a new Windows machine is set that value to 3000 or so - then debug the program normally and copy/paste the contents of the console window before it closes.</p>

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