Subroutine, Perl - rextester

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#perl 5.22.1

print "Hello World\n";

$a=4;$b=3;

OUTER: while ($a>=0){
        print "hello \$a: $a\n";
        $a-=1;
        INNER: while ($b>=0){
            print "hello\$b: $b\n";
            if ($b==1){
                print "$b\n";
                next OUTER;
                }
            print "inner while\n";
            $b=$b-1;
            }
            }
$name = "Nive";            
sub Name{
        print "$name";
        }

Name($name);

sub Average{

$n = @_;$sum=0;
    print "\n\$n = $n\n";
    print "\@_ = @_\n";
    
    foreach $i (@_){
        $sum = $sum+$i;
        }
    print $sum;
    }
    
Average((10,20,30,40));

$a=10;
@b=(3,6,9);
@c=(5,10,15);
sub Test1{
    print "\n@_\n";
    print "$a\n";
    print "@b\n";
    print "@c\n";
    @c=(1)
    }
print "\n@c\n";

Test1($a,@b);

print "@c\n";

print "\n********************\n\n";

sub hash_val{
    $sum=0;
    print "\n\@_: @_\n";
    %hash1=@_;
    @hash_keys = keys %hash1;
    @hash_values = values %hash1;
    print "\n\@hash_keys: @hash_keys";
    print "\n\@hash_values: @hash_values\n";
    foreach $val_1 (@hash_values){
        $sum=$sum+$val_1;
        }
    print $sum;
    return $sum;
    }
    
$ans = hash_val(("a"=>100, "b"=>200, "c"=>300, "d"=>400));
print "\n$ans\n";

print "\n*************\n";

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