Answered: m> #include #include #include

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

Section: Chapter Questions

Problem 1PE

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Question

Write a program that inputs, processes, and outputs a set of student records organized as a vector of class StudentRec objects.

#include <iostream>

#include <iomanip>

#include <string>

#include <vector>

using namespace std;

class Movie

{

private:

string title = "";

int year = 0;

public:

void set_title(string title_param);

string get_title() const; // "const" safeguards class variable changes within function

string get_title_upper() const;

void set_year(int year_param);

int get_year() const;

}; // NOTICE: Class declaration ends with semicolon!

void Movie::set_title(string title_param)

{

title = title_param;

}

string Movie::get_title() const

{

return title;

}

string Movie::get_title_upper() const

{

string title_upper;

for (char c : title) {

title_upper.push_back(toupper(c));

}

return title_upper;

}

void Movie::set_year(int year_param)

{

year = year_param;

}

int Movie::get_year() const

{

return year;

}

int main()

{

cout << "The Movie List program\n\n"

<< "Enter a movie...\n\n";

// get vector of Movie objects

vector<Movie> movies;

char another = 'y';

while (tolower(another) == 'y')

{

Movie movie;

string title;

cout << "Title: ";

getline(cin, title);

movie.set_title(title);

int year;

cout << "Year: ";

cin >> year;

movie.set_year(year);

movies.push_back(movie);

cout << "\nEnter another movie? (y/n): ";

cin >> another;

cin.ignore();

cout << endl;

}

// display the movies

const int w = 10;

cout << left

<< setw(w * 3) << "TITLE"

<< setw(w) << "YEAR" << endl;

for (Movie movie : movies)

{

cout << setw(w * 3) << movie.get_title()

<< setw(w) << movie.get_year() << endl;

}

cout << endl;

// Output with titles in ALL CAPS

for (Movie movie : movies)

{

cout << setw(w * 3) << movie.get_title_upper()

<< setw(w) << movie.get_year() << endl;

}

cout << endl;

return 0;

}

Using the attached code as a "model", write a program where each student record is constructed using the class StudentRec.
- The variables in this case are "private" and the functions are "public."
- Note: only the first_name and last_name variables will require "getter" functions that return the name in all caps:

get_first_name_upper() and get_last_name_upper() functions.

Your class declaration section should look something like this:

class StudentRec

{

private:

string last_name = ""; // Last name

string first_name = ""; // First name

int year_grad = 0; // Year expected to graduate

float gpa = 0.0; // Current gpa

public:

void set_last_name(string last_name_param);

string get_last_name() const;

string get_last_name_upper() const;

// the rest of the "setter" and "getter" functions for each variable above go here

}; // NOTE: a class declaration ends with a semicolon

The program should ask for the data to fill a studentRec of class StudentRec and then ask y/n if they want to add another studentRec.

Each studentRec will go into the vector of type StudentRec called student_list.

After the student records have been entered into the vector student_list, find the average gpa of all the students in the vector.
Output all the student records and give the average gpa for the students. Use the iomanip tools to make the data look as nice a possible.

Expert Solution

Step 1

given -

Write a program that inputs, processes, and outputs a set of student records organized as a vector of class StudentRec objects.

#include <iostream>

#include <iomanip>

#include <string>

#include <vector>

using namespace std;

class Movie

{

private:

string title = "";

int year = 0;

public:

void set_title(string title_param);

string get_title() const; // "const" safeguards class variable changes within function

string get_title_upper() const;

void set_year(int year_param);

int get_year() const;

}; // NOTICE: Class declaration ends with semicolon!

void Movie::set_title(string title_param)

{

title = title_param;

}

string Movie::get_title() const

{

return title;

}

string Movie::get_title_upper() const

{

string title_upper;

for (char c : title) {

title_upper.push_back(toupper(c));

}

return title_upper;

}

void Movie::set_year(int year_param)

{

year = year_param;

}

int Movie::get_year() const

{

return year;

}

int main()

{

cout << "The Movie List program\n\n"

<< "Enter a movie...\n\n";

// get vector of Movie objects

vector<Movie> movies;

char another = 'y';

while (tolower(another) == 'y')

{

Movie movie;

string title;

cout << "Title: ";

getline(cin, title);

movie.set_title(title);

int year;

cout << "Year: ";

cin >> year;

movie.set_year(year);

movies.push_back(movie);

cout << "\nEnter another movie? (y/n): ";

cin >> another;

cin.ignore();

cout << endl;

}

// display the movies

const int w = 10;

cout << left

<< setw(w * 3) << "TITLE"

<< setw(w) << "YEAR" << endl;

for (Movie movie : movies)

{

cout << setw(w * 3) << movie.get_title()

<< setw(w) << movie.get_year() << endl;

}

cout << endl;

// Output with titles in ALL CAPS

for (Movie movie : movies)

{

cout << setw(w * 3) << movie.get_title_upper()

<< setw(w) << movie.get_year() << endl;

}

cout << endl;

return 0;

}

Using the attached code as a "model", write a program where each student record is constructed using the class StudentRec.
- The variables in this case are "private" and the functions are "public."
- Note: only the first_name and last_name variables will require "getter" functions that return the name in all caps:

get_first_name_upper() and get_last_name_upper() functions.

Your class declaration section should look something like this:

class StudentRec

{

private:

string last_name = ""; // Last name

string first_name = ""; // First name

int year_grad = 0; // Year expected to graduate

float gpa = 0.0; // Current gpa

public:

void set_last_name(string last_name_param);

string get_last_name() const;

string get_last_name_upper() const;

// the rest of the "setter" and "getter" functions for each variable above go here

}; // NOTE: a class declaration ends with a semicolon

The program should ask for the data to fill a studentRec of class StudentRec and then ask y/n if they want to add another studentRec.

Each studentRec will go into the vector of type StudentRec called student_list.

After the student records have been entered into the vector student_list, find the average gpa of all the students in the vector.
Output all the student records and give the average gpa for the students. Use the iomanip tools to make the data look as nice a possible.

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