An Example: Pick a Number
In this example, we'll play a sort of game where Perl prompts you for a number, picks a random number between 1 and your number, and then has you try to guess which number it's picked, like this:
% picknum.pl Enter top number: 50 Pick a number between 1 and 50: 25 Too high! Pick a number between 1 and 50: 10 Too low! Pick a number between 1 and 50: 17 Too high! Pick a number between 1 and 50: 13 Too high! Pick a number between 1 and 50: 12 Correct! Congratulations! It took you 5 guesses to pick the right number. %
This script makes use of two while loops and a number of if tests, as well as the rand function to pick the number. Listing 6.1 shows the code, our longest script so far.
Listing 6.1. The picknum.pl Script ...
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