Each <STDIN> reads a line from stdin so if you have:

my $var = <STDIN>;
while ($var = <STDIN>)

[download]

you read a line in the declaration (my $var), then replace the value in the while loop while ($var = <STDIN>).

The next;s inside the elsifs bypass the print "Enter ... at the end of the loop.

For fun consider this version:

use strict;

my $target = 12;
print "Guess my number.\n";

while ((print "Enter your guess: "), my $guess = <STDIN>)
  {
  (print "You guessed it!"), last if $guess == $target;
  (print "You guessed too low\n"), next if $guess < $target;
  (print "You guessed too high\n"), next if $guess > $target;
  }

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DWIM is Perl's answer to Gödel

In reply to Re: Regarding Declaring Variables by GrandFather
in thread Regarding Declaring Variables by Tech77

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