howto declare function in perl
 

hi i would like to know how to declare a function and call it in perl.

e pluribus unum. Pick a couple words out of your question, like 'function' and 'Perl', and appeal to El Googleo. There are lots of other tips and useful information in the forum's rules/FAQ.

check out www.perldoc.org, tones of information on what you want to do there.