Hi Monks! Iīm trying to print a 4 x 4 matrix but i donīt really know how to round the numbers and print them at the same time with printf with a spacing of ,for example, 4 Hereīs what i wrote: the numbers are stored in a hash of hashes with the keys A B C and D 
A => A 6.8888
B => B  6.8888
C => C 6.8888
D => D 6.8888

[download]
the rest of the numbers are 0.1111 
my @letters=qw(A B C D);
print '    ';
    foreach my $key (@letters){          
        printf ("%s", $key);
    }
    
    "\n";
    
    foreach my $key (@letters) {
        print $key,' ';
        foreach my $key2 (@letters) {
            printf ("%.1f" , $A->{$key}->{$key2});
        }
        print "\n";
    }
}

[download]
Hereīs what im trying to get: 

      A      B      C      D
A    6.8    0.1    0.1    0.1 
B    0.1    6.8    0.1    0.1    
C    0.1    0.1    6.8    0.1
D    0.1    0.1    0.1    6.8

[download]

In reply to how to printf a matrix like this by madM

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