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using FIFO to control an external program

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KingOfMalkier
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Joined: 03 Apr 2003
Posts: 47

Posted: Thu May 08, 2003 1:32 am Post subject: using FIFO to control an external program

I want to be able to send commands to a program and receive the output back, all from within c or c++. In this particular case, the program is clisp. I've been using popen() from the stdlib, but I've been running into a problem. I can start clisp and send it a command, but as soon as it receives the command, it evaluates the expression and then exits. This more or less makes sense since

Code:

clisp < file_with_cmds_in_it

behaves the same way. Am I out of luck? Or is there some way to trick clisp and let me send a command, look at the output, then send another?

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