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#1 2012-08-17 02:40:30
- BennyBolton
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- From: Christchurch New Zealand
- Registered: 2011-10-14
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[SOLVED] c++ get variable set by call to system()
I am writing a program and i decided for input/output it would be best to allow for custom commands. I have written a config file and defined a series of commands (just echo, etc) and call these within the program using system(). The problem is that i need to get input from these commands. I tried using "read ANSWER" and then getenv("ANSWER") but this returns a null string. What is the best method to do this?
Last edited by BennyBolton (2012-08-17 07:10:59)
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#2 2012-08-17 06:58:54
- lunar
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- Registered: 2010-10-04
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Re: [SOLVED] c++ get variable set by call to system()
Use "popen()" instead of "system()". Even better, avoid subprocesses and use C++ libraries instead. I can't see any reason why one would call echo from C++…
Last edited by lunar (2012-08-17 06:59:43)
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#3 2012-08-17 07:10:22
- BennyBolton
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- From: Christchurch New Zealand
- Registered: 2011-10-14
- Posts: 63
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Re: [SOLVED] c++ get variable set by call to system()
Thank you for the reply! This should do the trick
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