Problem Solving with C++ (9th Edition)
Problem Solving with C++ (9th Edition)
9th Edition
ISBN: 9780133591743
Author: Walter Savitch
Publisher: PEARSON
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Chapter 18, Problem 8PP

You have collected a file of movie ratings where each movie is rated from 1 (bad) to 5 (excellent). The first line of the file is a number that identifies how many ratings are in the file. Each rating then consists of two lines: the name of the movie followed by the numeric rating from 1 to 5. Here is a sample rating file with four unique movies and seven ratings:

7

Harry Potter and the Order of the Phoenix

4

Harry Potter and the Order of the Phoenix

5

The Bourne Ultimatum

3

Harry Potter and the Order of the Phoenix

4

The Bourne Ultimatum

4

Wall-E

4

Glitter

1

Write a program that reads a file in this format, calculates the average rating for each movie, and outputs the average along with the number of reviews. Here is the desired output for the sample data:

Glitter: 1 review, average of 1 / 5

Harry Potter and the Order of the Phoenix: 3 reviews, average

of 4.3 / 5

The Bourne Ultimatum: 2 reviews, average of 3.5 / 5

Wall–E: 1 review, average of 4 / 5

Use a map or multiple maps to calculate the output. Your map(s) should index from a string representing each movie’s name to integers that store the number of reviews for the movie and the sum of the ratings for the movie.

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Refer to page 80 for problems on white-box testing. Instructions: • Perform control flow testing for the given program, drawing the control flow graph (CFG). • Design test cases to achieve statement, branch, and path coverage. • Justify the adequacy of your test cases using the CFG. Link: [https://drive.google.com/file/d/1wKSrun-GlxirS3IZ9qo Hazb9tC440 AZF/view?usp=sharing]

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