Hello, So I have a script written to do a simple conversion of taking user input in the format of ##:## where the # are in place of a of a number of 0-9 or a letter of A-F (exception of not having the letter E in there) and calculating its hex value then adding one to it, and repeating for a amount specified by the user. The section of code relevant is 
#takes the first two characters and stores them for later
$AddressOriginal = substr($Address, 0, 3);
#removes the first three characters leaving the later ## in the format
+ ##:##
$Address = substr($Address, 3, 2);
#Test lines to make sure the above lines do their intended purpose
#print $Address . "\n";
#print $AddressOriginal . "\n";
for($count = 1; $count <= $IDcount; $count++) {
    $hexval = sprintf("%02X\n", ($Address));
    $Address++;
    $Address1 = ($AddressOriginal . $hexval);
    #Test line to make sure the procedure completed its intended task
    print $Address1;

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I have encountered a bug where when the user puts in a value with a letter in it of the second half of ##:##, it starts at 00. For example, Say I go and I pass it 3F:13, the next iteration would be 3F:14, 3F:15, 3F:16... However say I pass it A7:F0, we would expect it to go A7:F1, A7:F2, A7:F3... however it instead goes A7:00, A7:01, A7:02... I have already did several google searches, and looked into perldocs, however I am having trouble finding anything to be able to help me. The closest I have found is that perl assumes that whenever a user puts in a character such as F or B, that it makes it a string. I have already tried, having it be taken more clearly as a decimal I believe, by having the user put in two separate values, but nothing changed. Could anyone please point me in the right direction on where I may be going wrong, or explain to me where I have messed up?

In reply to Invalid Hex Conversion? by tfredett

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