Code: 
#!/usr/bin/perl -w

use strict;


my @array = (1, 2, 3, 4);
my $string;
my $item;

foreach $item(@array) {
    &some_sub($item);
}

sub some_sub {

    if ($item = "1") {
    $string = "one";
    }
    elsif ($item = "2" ) {
    $string = "two";
    }
    elsif ($item =  "3" ) {
    $string = "three";
    }
    else { $string = "four" }
    
    print "My number is $string\n";
}

[download]
I have some serious problems here:

When run, it produces the output: 
Found = in conditional, should be == at ./testsub.pl line 22.
Found = in conditional, should be == at ./testsub.pl line 19.
Found = in conditional, should be == at ./testsub.pl line 16.
My number is one
My number is one
My number is one
My number is one

[download]
When I change "=" to "==", I get: 
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
My number is four
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
My number is four
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
My number is four
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
Use of uninitialized value in numeric eq (==) at ./testsub.pl line 16.
My number is four

[download]
I suppose that I have two questions:

1. How can I assign a number to a variable?
2. How can I pass the array elements as args to a subroutine??

In reply to Using array elements as subroutine args by Tuna

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