Check Digits and extracting digits

Posted on 16th Feb 2014 07:03 pm by admin

I think I can figure out the code for this but I am having a very hard time getting past the first step. Any suggestions are greatly appreciated.

What I need to do is take a 9 digit account number (for an electrical bill) and 1) determine if it is a valid account using the check digit, and 2) determine the type of account it is (ie if the 2nd digit is a 4, its a residential account).

Suppose the account is 123456789 and I need to add the 3rd, 5th, 7th, and 9th digits, how to do I extact the digits so they can be worked with? All I can think of is to do something like this:

cout << "enter the third digit of your account"
cin >> digit3 >> endl;
cout << "enter the fifth digit..."
cin >> digit5 >> endl;

and so on...

total = digit3 + digit5 + digit7 + digit 9

Its obviously not practical to have the user enter their account number one digit per line as I am doing But how else do it make the account number into something I can manipulate?

I am a beginner. And not a very smart one, obviously :(

Your Answer:

Login to answer

Other forums

PHP, jAVASCRIPT setting input values, why isn't it working?
Hi:

I am calling this javascript:
<script language="javascript">

Adding to an Int row in db
Hi, i have a database which houses all of the users of my site. One of the columns is for points whi

Get ID from Database when Posting with a HTML Form
I have a form I am submitting to a MySql database. Each product has an ID # attached to it that auto

Storing/displaying image urls in a database?
Hi
Basically I have the following scenario:
User chooses picture from list. Picture info is ad

Local file browser with php
Halo..

So this is what i want to create. I have a folder that i share and it has many movies.

Two fgetcsv related questions ;D
First of im trying to get a file from a merchants server but the directory is protected, I know the

problem with php mysql query
Hi guy's...

I'm totally lost here..because don't have any idea how to make a query for grab r

Had a simple form script that suddenly stopped working
It was made about a year ago and had been working fine. Last time it was known to work for sure was

Parse multirow HTML table
Hello all,
I have a site I am working on. Its a sports site and I am trying to add stats to a DB

Help with echo()
I'm having some problems with this code:

Code: echo '
<A HREF="jav