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# CSC 340.01+.02 ASSIGNMENT 03 solved

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## PART A – TIC TAC TOE, 5 points

Please implement a basic version of Tic Tac Toe:
1. Function main and function headers are provided. Please implement the functions and do not change the main.
2. Our program must produce identical output:
Assignment-03_PA_Run1.txt and Assignment-03_PA_Run2.txt

## PART B – Credit Card Number Validation, 5 points

Credit card numbers follow certain patterns. A credit card number must have between 13
and 16 digits. The starting numbers are: 4 for Visa cards, 5 for MasterCard cards, 37 for
American Express cards, and 6 for Discover cards.
Example: Validating 4 3 8 8 5 7 6 0 1 8 4 0 2 6 2 6
a) Double every second digit from right to left. If doubling of a digit results in
a two-digit number, add the two digits to get a single digit number.
b) Now add all single-digit numbers from Step a:

4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37
c) Add all digits in the odd places from right to left in the card number:
6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38
d) Sum the results from Step b and Step c:
37 + 38 = 75
e) If the result from Step d is divisible by 10, the card number is valid;
otherwise, it is invalid.

## Please implement Credit Card Number Validation:

1. Function main is provided. Please implement isvalidcc and other functions
which you may add to the program.
2. Please do not change function main
3. Your program must produce identical output: Assignment-03_PB_Run.pdf
P E R F O R M A N C E T R A C K E R

ZOOM 05
01 15
02 100
03 100
TOTAL 220
A: 90-100% B: 80-89% C: 70-79% D: 60-69% F: 0-60%
The course grader provides feedback to your
assignments on iLearn.

## PART C – Dictionary 340 C++, 90 points

Our satisfied clients are back to ask us to implement another interactive dictionary. Our dictionary takes input from users
and uses the input as search key to look up values associated with the key. Requirements:
– Coding: No hard coding, https://en.wikipedia.org/wiki/Hard_coding. Please think about Dynamic and Scalable.
– Data Source: A text file, Data.CS.SFSU.txt . Please think about Software Deployment and Usability.

– Data Structure: Use existing data structure(s) or create new data structure(s) to store our dictionary’s data. Each keyword,
each part of speech, and each definition must be stored in a separate data field. Do not combine them such as storing
three parts in one String.

– Data Loading: When our program starts, it loads all the original data from the Data Source into our dictionary’s data
structure. The data source file is opened once and closed once per run. It must be closed as soon as possible. It must be
closed before our program starts interacting with users.

– User Interface: A program interface allows users to input search keys. This interface then displays returned results. Our
program searches the dictionary’s data (not the data source text file) for values associated with the search keys.
– Identical Output: Our program’s output must be identical to the complete sample run’s output: Assignment-03_PC_Run.pdf

### 1. Program Analysis to Program Design, 10 points. Please think about Interviews.

In at least 1 full page, please focus on the differences/improvements you are making in this C++ version of the
program in comparison to your previous Java version while explaining the following in detail:
▪ Your analysis of the provided information and the
Clients and Sales.

▪ What problem you are solving. Please explain it
Problem Solving and Interviews.

▪ How you store data from the external text file. And