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
| 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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Chapter 18 Solutions
Problem Solving with C++ (9th Edition)
Ch. 18.1 - If v is a vector, what does v.begin() return? What...Ch. 18.1 - If p is an iterator for a vector object v, what is...Ch. 18.1 - Suppose v is a vector of ints. Write a for loop...Ch. 18.1 - Suppose the vector v contains the letters 'A',...Ch. 18.1 - Suppose the vector v contains the letters 'A',...Ch. 18.1 - Suppose you want to run the following code, where...Ch. 18.2 - Prob. 7STECh. 18.2 - Prob. 8STECh. 18.2 - Prob. 9STECh. 18.2 - Prob. 10STE
Ch. 18.2 - Prob. 11STECh. 18.2 - Prob. 12STECh. 18.2 - Prob. 13STECh. 18.2 - Prob. 14STECh. 18.2 - Prob. 15STECh. 18.2 - Prob. 16STECh. 18.3 - Prob. 17STECh. 18.3 - Prob. 18STECh. 18.3 - Prob. 19STECh. 18.3 - Suppose v is an object of the class vectorint. Use...Ch. 18.3 - Prob. 21STECh. 18.3 - Can you use the copy template function with vector...Ch. 18.3 - Prob. 23STECh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Write a program that allows the user to enter any...Ch. 18 - Prob. 3PPCh. 18 - Prob. 5PPCh. 18 - Solution to Programming Project 18.6 In this...Ch. 18 - Prob. 7PPCh. 18 - You have collected a file of movie ratings where...Ch. 18 - Prob. 9PP
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