Thanks athan. Another help I need is that all this output I want it dumped in a output file. But I cant use this : 
perl program.pl >> output.txt

[download]
Because as you can see the program asks for user input, so I cant redirect the output. Can you help me on how to redirect the output of such a code which asks for user input on command line.

There's some code that needs to be included around the last printf which is actually printing on console out, but exactly how to do it is what I want. Thanks !!

In reply to Re^4: Perl code for finding shortest path not working on large files (chomp) by zing
in thread Perl code for finding shortest path not working on large files by zing

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