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Passing command line variable into already running c++ program

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Passing command line variable into already running c++ program

jobra	25 Feb, 2007 - 07:38 PM Post #1
New D.I.C Head Joined: 10 Dec, 2006 Posts: 3 My Contributions	Hi all, I want to run my c++ program in the background and at certain point, I want to pass a variable into the program, so that I get the result stored into the output file. I would like to know if its possible to do this. Thanks a lot in advance. Cheers
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NickDMax	RE: Passing Command Line Variable Into Already Running C++ Program 25 Feb, 2007 - 09:51 PM Post #2
2B\|\|!2B Joined: 18 Feb, 2007 Posts: 2,858 Thanked: 49 times Dream Kudos: 550 My Contributions	Of course it is possible. To know HOW to do it you need to let us know the environment you are working in. In windows you might pass the process a message, in Dos you can pass the information via and interupt. I don't know how to do it in UNIX but I am sure someone here dose. What environment are you working in.
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jobra	RE: Passing Command Line Variable Into Already Running C++ Program 25 Feb, 2007 - 10:00 PM Post #3
New D.I.C Head Joined: 10 Dec, 2006 Posts: 3 My Contributions	QUOTE(NickDMax @ 25 Feb, 2007 - 10:51 PM) Of course it is possible. To know HOW to do it you need to let us know the environment you are working in. In windows you might pass the process a message, in Dos you can pass the information via and interupt. I don't know how to do it in UNIX but I am sure someone here dose. What environment are you working in. Thanks a lot for your reply. I am using cygwin (linux) environment.
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horace	RE: Passing Command Line Variable Into Already Running C++ Program 25 Feb, 2007 - 11:19 PM Post #4
D.I.C Addict Joined: 25 Oct, 2006 Posts: 573 Thanked: 4 times Dream Kudos: 50 My Contributions	read up on IPC (Interprocess communication) such as pipes, signals, messages, etc http://www.cs.cf.ac.uk/Dave/C http://fscked.org/writings/SHM/shm.html You can run a process which can pass the data to the background program using IPC, for example a named pipe.
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