It's function prototyping.That's needed because retriver() is not defined while it's been called.If you remove the prototyping (line 3) you have to use &retriver() while calling the function ,which tells the compiler to look for the definition somewhere below.

The world is so big for any individual to conquer

In reply to Re^3: find a string and count of its occurence in a text file by narainhere
in thread find a string and count of its occurence in a text file by new@perl

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