Re^4: call tree analysis using perl

[stallion]

I used DATA also but still its throwing up the same error.

[Eliya]

Then you've likely removed the __END__ part of the script, which is the data that can be accessed via the file handle DATA.  When Perl sees a __DATA__ or __END__ section, it makes the data following it available via the then pre-opened file handle DATA.

See perldata.