how to convert hexadecimal to alphanumeric

Purnendu.it · New User Joined: 11 May 2007 Posts: 57 Location: chennai

HI all,

i have got a requirement in which i have to change hexadecimal value in a big flat file to corresponding alphanumeric where i find these.can i
write a program to perform this operation.
hope you got my question.

Thank you.

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi,

I think you may be misusing the terms Hex and Aupha/num.

Why don't you provide examples and show us what the hex looks like in memory and what it is changed to in its A/N form? That might give us what we need to help you.

Purnendu.it · New User Joined: 11 May 2007 Posts: 57 Location: chennai

HI,

its a big flat file so i dont know where this garbage values are.I mean to say that in file where ever i find some hexadecimal value i have to change it in alphanumeric.Is there any way where we read through the file
and change these hez value to alphanumeric.Hope you got what i said.

reply if u have any doubt.

Thanks

murmohk1 · Posted: Tue Jan 08, 2008 12:37 pm

Purnendu.it · New User Joined: 11 May 2007 Posts: 57 Location: chennai

i was not mean its a garbage value i mean to say that it is not the desired value.
as in file in general there has to be the value in the alphanumeric form
but in some places i find values like hexadecimal form.So can you please help me regarding this how to remove these values.

enrico-sorichetti · Posted: Tue Jan 08, 2008 5:04 pm

Sorry, we all might be dumb, but Your requirement is not clear, or rather the description is confusing..

point one... everything is hexadecimal
point two... nothing is garbage per se
but ... garbage would be
-alphabetic chars in a numeric field,
-non display char in an alphabetic fields,
-date wrong in se "2008/42/42",
numbers-dates out of application determined bounds
...
... add as many as You want

does Your record have some kind of layout yes/no

does Your record consist only of one big field,
to be considered not garbage only if everything is displayable yes/no

please be more specific on your definition of garbage
think in MF terms... files/records/layout

nitesh.mulay · New User Joined: 30 May 2006 Posts: 10 Location: Pune

I think the file will contain all the characters in normal form and not in hexadecimal form. you can view those characters in Hexadecimal format with "HEX ON" command.General character and hexadecimal character cannot be present at a time in a file.
Just check whether the values are hexadecimal values or junk characters (coming because of no initialisation etc)

Phrzby Phil · Posted: Tue Jan 08, 2008 6:31 pm

Nitesh - see Enrico's point one, which is actually points one, two, three, ..., ten.

EVERYTHING is made of bits, and 8 bits make a byte, and a hexadecimal digit (?) is just a convenient way to represent 4 bits, so two of them represent a byte.

Binary, packed-dec, 1's complement, floating point, display - who cares - they're all hexadecimal in an 8-bit byte computer.

(In older days, we grouped by 3 bits, and base 8 was commonly used to represent the two 3-bit parts of a 6-bit field.)

Anuj Dhawan · Posted: Tue Jan 08, 2008 7:17 pm