How to handle input and output of a program executed by System function in perl

From: zw (zw_at_cs.man.ac.uk)
Date: 07/18/04 

Date: 18 Jul 2004 13:31:16 -0700

Could anybody tells me how to handle input and output of a program
executed by System function in perl, please? I used a system function
defined in a perl script to call a program such as a Java or C program
to run and then I want to capture the return result from this Java or
C program to a local variable defined in this perl script.

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