used to validate if the verification key of a product is valid or not. So it will pass a seven- or eight-digit number. This function will test if the value passed is valid or not . For example if the verification key of the object is 11023589 The function will do the following process but not print it Verification Key 1 1 0 2 3 5 8 9 Conditoner 8 7 6 5 4 3 2 1 Product 8 7 0 10 12 15 16 9 The sum of the product if is divisible by 7 then the key is correct if not then it's print Invalid. The sum of the product is 77 and since its divisible by 11 the function will just print Valid For instance the sum for this specific

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Using C( not C# or C++) without use of arrays or strings ,I am trying to code a check digit program that is being used to validate if the verification key  of a product is valid or not. So it will pass a  seven- or eight-digit number. This function will test if the value passed is valid or not .

For example if the verification key of the object is  11023589

The function will do the following process but not print it

Verification Key 1 1 0 2 3 5 8 9
Conditoner 8 7 6 5 4 3 2 1
Product 8 7 0 10 12 15 16 9

The sum of the product if is divisible by 7 then the key is correct if not then it's print Invalid.

The sum of the product is 77 and since its divisible by 11 the function will just print Valid

For instance the sum for this specific 

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