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while (<>) {
  chomp;
...
"65"
Argument ""65"" isn't numeric in printf at -e line 5, <> line 3.
input as string="65", as decimal=0

> while read a; do
> printf "string=%s, as decimal=%d\n" $a $a
...
string="0", as decimal=48
"0x30"
string="0x30", as decimal=48