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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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If the disclaimer of warranty and limitation of liability provided
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# C++ Programming II - Summer 2020 (2020SU)
The focus of this course is to learn the robust and powerful features of C++ and Object Oriented Programming.
These skills will serve as a foundation to transit to develop Client/Server, Database driven applications and simulations. Therefore, in order to be effective in developing enterprise applications it is really imperative for the students to master these skills.
### Champlain College
- [SDEV-340-81](https://classlist.champlain.edu/show/course/number/SDEV_340) programming language.
### License & Copyright
- Written by [Llewellyn van der Merwe](https://github.com/Llewellynvdm), Aug 2020
- Copyright (C) 2020. All Rights Reserved
- License [GNU/GPL Version 2 or later](http://www.gnu.org/licenses/gpl-2.0.html)

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cmake-build-debug
.idea

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cmake_minimum_required(VERSION 3.16)
project(week-01)
set(CMAKE_CXX_STANDARD 14)
add_executable(week-01 main.cpp)

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GNU GENERAL PUBLIC LICENSE
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parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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//******************************************************************************************
// This program gathers the data of the number of movies
// watched by college students per/month. Then calculates the
// average, median, and mode from the given input values.
// Writen by Llewellyn van der Merwe (2020/05)
//******************************************************************************************
// Starting out with C++ Early Objects (Ninth Edition)
// by Tony Gaddis, Judy Walters, Godfrey Muganda
// Review Questions and Exercises (page 702)
//------------------------------------------------------------------------------------------
// 7. Movie Statistics
// Write a program that can be used to gather statistical data about the number of movies
// college students see in a month. The program should ask the user how many students
// were surveyed and dynamically allocate an array of that size. The program should then
// allow the user to enter the number of movies each student has seen. The program
// should then calculate the average, median, and mode of the values entered .
//******************************************************************************************
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
// Function prototypes
void getMoviesViewed(int *survey, int size);
double getTotal(int *survey, int size);
double getAverage(int *survey, int size);
double getMedian(int *survey, int size);
string getMode(int *survey, int size);
void quickSort(int *survey, int low, int high);
int main() {
// we first get the number of students
int number;
cout << "Enter the number of college students that were surveyed: ";
cin >> number;
// only continue if we have a number higher then zero and lower the 100
if (number > 0 && number < 101) {
// add to constant
const int STUDENTS = number;
// the survey array
int survey[STUDENTS];
// get each student's number of movies viewed
getMoviesViewed(survey, STUDENTS);
// display the results
cout << endl;
cout << " The average number of movies watched: ";
cout << setprecision(2) << fixed << showpoint << getAverage(survey, STUDENTS) << endl;
cout << " The median of the number of movies watched: ";
cout << setprecision(2) << fixed << showpoint << getMedian(survey, STUDENTS) << endl;
cout << " The mode of the number of movies watched: ";
cout << getMode(survey, STUDENTS) << endl;
cout << endl;
} else {
cout << "Oops, enter a number between 1 and 100" << endl;
cout << "Please try again!" << endl;
}
return 0;
}
//******************************************************************************************
// Definition of the getMoviesViewed.
// This function is used to get each student's number of movies watched
//******************************************************************************************
void getMoviesViewed(int *survey, int size) {
// get first element pointer
int *ptr = &survey[0];
cout << endl;
for (int count = 0; count < size; count++) {
cout << " Enter the number of movies watched by student ";
cout << (count + 1) << ": ";
cin >> *ptr;
ptr++;
}
cout << endl;
}
//******************************************************************************************
// Definition of the getTotal.
// This function is used to get total movies watched
//******************************************************************************************
double getTotal(int *survey, int size) {
int sum = 0.00;
for (int count = 0; count < size; count++) {
sum += *survey++;
}
return sum;
}
//******************************************************************************************
// Definition of the getAverage.
// This function is used to get average of movies watched
//******************************************************************************************
double getAverage(int *array, int size) {
double total = getTotal(array, size);
// make sure we have more then 0
if (total > 0) {
return total / size;
} else {
return 0.00;
}
}
//******************************************************************************************
// Definition of the getMedian.
// This function is used to get median movies watched
//******************************************************************************************
double getMedian(int *survey, int size) {
// first sort the array
quickSort(survey, 0, size - 1);
// get first element pointer
int *ptr = &survey[0];
// get the middle of this array
int get = floor(size / 2);
// check if odd or even array size & since it is odd we have a center number
if (size % 2) {
return *(ptr + get);
} else {
double m = *(ptr + get) + *(ptr + get - 1);
return m / 2;
}
}
//******************************************************************************************
// Definition of the getMode.
// This function is used to get mode of the movies watched
//******************************************************************************************
string getMode(int *survey, int size) {
// bucket to get the multi sets
map<int, int>::iterator mode;
map<int, int> modes;
// our trigger
int trigger = 0;
// get first element pointer
int *ptr = &survey[0];
for (int i = 0; i < size; i++) {
// get first element pointer
int *pointer = &survey[0];
for (int j = 0; j < size; j++) {
if (*pointer == *ptr && pointer != ptr) {
if (modes.count(*ptr) > 0) {
modes[*ptr]++;
} else {
modes[*ptr] = 2;
}
trigger++;
}
pointer++;
}
ptr++;
}
// set the default winner value
string winner = "none found";
// check if we found a mode
if (trigger > 0) {
// bucket to get the winner sets
map<int, string> winners;
// loop over the found modes
int counter = 1;
for (mode = modes.begin(); mode != modes.end(); mode++) {
// check if we have a winner
if (counter <= mode->second) {
// set the current winner
if (counter == mode->second) {
// another of the same winner
winners[mode->second] += ", " + to_string(mode->first);
} else {
// new winner
winners[mode->second] = to_string(mode->first);
}
// raise the bar
counter = mode->second;
// keep track of the winners
winner = winners[mode->second];
}
}
}
// return winner string
return winner;
}
//******************************************************************************************
// Definition of the quickSort.
// This function is used to quick sort the array
// https://gist.github.com/christophewang/ad056af4b3ab0ceebacf (adaptation)
//******************************************************************************************
void quickSort(int *survey, int low, int high) {
int i = low;
int j = high;
int pivot = survey[(i + j) / 2];
int temp;
while (i <= j) {
while (survey[i] < pivot)
i++;
while (survey[j] > pivot)
j--;
if (i <= j) {
temp = survey[i];
survey[i] = survey[j];
survey[j] = temp;
i++;
j--;
}
}
if (j > low)
quickSort(survey, low, j);
if (i < high)
quickSort(survey, i, high);
}