On Mon, Oct 1, 2012 at 4:44 AM, li panda <lpd...@gmail.com> wrote: > 2.print "0x30" + 0, "\n"; > why output is 0 not 0x30
afbach$ perl -e 'print 0x30 + 0, "\n";'
48
afbach$ perl -e 'printf("%x\n", 0x30 + 0);'
30
afbach$ perl -e 'printf("%x\n", 30 + 0);'
1E
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a
Andy Bach,
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