Hi Monks!
i wrote a subroutine to print a matrix and now im trying to pass the arguments of the subroutine with getopt::long hereīs what i wrote: so i want to pass the matrix $A, $forprint and $header with options .. but i dont know exactly how.. any suggestions? 
sub printMatrix1 {
    
    my ($A,$forprint,$header1) = @_; #$A is the matrix to be printed, 
+$forprint is the format and $header1 is the header of the matrix to b
+e printed

    open(OUT,">$header1.txt") or die "The File $header1.txt couldnīt b
+e opened\n";
    print OUT "$header1\n\n";
    
    print OUT '  ';                             #prints space first so
+ that upper letters stay formated in place
    my $format2= $forprint;
    substr ($format2,length($format2)-1,1,'s'); #### for printing uppe
+r letters in the matrix
    
    foreach my $key (@aminos){          #Prints Upper aminoacido lette
+rs of the Matrix
        printf OUT ("$format2 ", $key);
    }
    
    print OUT "\n";
    
    foreach my $key (@aminos) {
        print OUT $key,' ';
        foreach my $key2 (@aminos ) {
            printf OUT ("$forprint " , $A->{$key}->{$key2});
        }
        print OUT "\n";
    }
    close OUT;
}

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In reply to updating code with getopt::long by madM

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