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pattern matching!

 

pattern matching!
Sun751

8 Jun, 2009 - 04:44 AM
Post #1

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CODE

use strict;
use warnings;


my $number = 5011;
$number =~ /(\d)(\d)(\d)(\d)/;
if ($1)
{
    print qw(this is 1st digit!);
}
elsif ($2)
{
    print qw(this is 2nd digit!);
}
elsif ($3)
{
    print qw(This is 3rd digit!);
}


In above code i am expecting it to print 1st digit, 2nd digit and 3rd digit, but its not working that way
its just printing 1st digit. Can any one tell me whats wrong????

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n00bc0der

RE: Pattern Matching!

8 Jun, 2009 - 05:28 AM
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While with if's and elsif's as soon as one validates to true so:

if (this is true) {

the program enters here
}

elsif {

this section will never get entered
}

Your algorithm is wrong here, you could do a sequences of if's, but i think you should redesign your algorithm here.
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KevinADC

RE: Pattern Matching!

8 Jun, 2009 - 07:49 AM
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And the print lines are going to look funny because you are using 'qw' which makes a list, then you print the list so all the words in the list will just run together. You should use 'qq' for strings with variable interpolation and 'q' for string without variable interpolation.
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