How can I use macros in Perl?

Question

How do I use macros in Perl, like I do in C?

Example:

#define value 100 
print value; 

I want to get the output as 100.

Answer 1

Perl is not C. You would be much better served by learning the corresponding Perl idioms (such as the already mentioned use constant value => 100) than by trying to drag C idioms into Perl.