You have the right idea, but extrapolate it for all the bits of $a, $b, and $c. The $c is essentially a multichannel multiplexer for inputs $a and $b. It specifies whether to select the bit from $a or $b for each digit of the output.

So with: 

my $a = 0b10101010;
my $b = 0b11001100;
my $c = 0b11110000;
#result:  11001010

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   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to (MeowChow) Re3: 'Holy in one' another Golf Game! by MeowChow
in thread 'Holy in one' another Golf Game! by mitd

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