How do I use file as input stream to existing C++ program?

Question

I have a existing program and I can't modify it. It use std::cin to read user's input.

Now I don't want to type in it every time, so I create a file like this:

How do I use this file as input stream ? I'm using OS X.

DrYap · Accepted Answer · 2013-10-28 09:13:18Z

3

If you are using the bash (or similar) shell and your input is in the file input.in then

myprogram < input.in

Will use input.in as the standard input to the program.

answered Oct 28, 2013 at 9:13

DrYap

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