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Re^2: Hex Question(s)

by TGI (Parson)
on Mar 27, 2008 at 16:51 UTC ( #676795=note: print w/replies, xml ) Need Help??

in reply to Re: Hex Question(s)
in thread Hex Question(s)

What version of Perl are you using? When I run your code on my system (WinXP, ActivePerl 5.8.8), I get an incorrect answer. I added a the use warnings pragma to your code and got this result:

C:\> Argument "0x2" isn't numeric in addition (+) at C:\ line 9. Argument "0x28" isn't numeric in addition (+) at C:\ line 9. 0 0

You can specify hexadecimals in literal code by appending an '0x' to the value. I suppose, if you really wanted to get to a hexadecimal from a string, you could use string eval.

my $this = sprintf("0x%x", 40); my $that = sprintf("0x%x", 2); my $other = eval "$this + $that"; printf "$other %x\n", $other;

I'd be inclined to go with hex, though.

TGI says moo

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