Illegal hexadecimal digit ' ' ignored at G:\Beta\Trap_Tool\hex.pl line 9. #### #!/usr/bin/perl use warnings; use strict; my $num = "0x10000000"; for (0..5) { my $dec_num = sprintf("%d", hex("$num")); print "DEC: $dec_num\n"; $dec_num ++; my $hex_num = sprintf "0x" . "%x\n", $dec_num; print "HEX: $hex_num\n"; $num = "$hex_num"; }