Wayne State University Operator Overloading C++ Programming Code

Instructions

Make sure your Assignment 1’s class* contains at least one (1) numeric attribute (int, float, double). If it does not, add a numeric attribute to your class.

Define the behavior of the following operators in your class’ objects:

• Two objects of that class are considered equal (==) if …
• The sum (+) of two objects of that class returns …
• When passing one object of that class to cout operator, it displays …

Using those definitions, modify your class to overload those operators. In the corresponding operator overloading function add a comment that explains the operator functionality (i.e. the definition of each operators)

In the main program

Create three objects of your Assignments 1’s class and demonstrate that ==, +, and cout operators works as expected when using them with your class’ objects.

Submission

Files to submit:

• Visual Studio solution/project files.
• Class files (.h and .cpp)
• Main program (.cpp)

Submit the Visual Studio project in a zip folder.

Example of expected submission

Note: the Solution/project files are not presented in this examples since those are automatically generated by Visual Studio. However, those are expected in students’ submission.

GroupCohesiveness.h

#include <iostream>

class GroupCohesiveness {
private:
   int answer0, answer1, answer2, answer3;
public:
   void setAnswer0(int a);
   void setAnswer1(int a);
   void setAnswer2(int a);
   void setAnswer3(int a);
   int getAnswer0() const;
   int getAnswer1() const;
   int getAnswer2() const;
   int getAnswer3() const;
   float getGroupCohesiveness() const;
   bool operator==(const GroupCohesiveness& survey2) const;
   GroupCohesiveness operator+(const GroupCohesiveness& survey2) const;
   friend ostream& operator<<(ostream& os, const GroupCohesiveness& survey);
   GroupCohesiveness();
   GroupCohesiveness(int a0, int a1, int a2, int a3);
   ~GroupCohesiveness();
};

GroupCohesiveness.cpp

#include "GroupCohesivness.h"

void GroupCohesivness::setAnswer0(int a) {
   if (a>=1 && a<=5) answer0=a;
}
void GroupCohesivness::setAnswer1(int a) {
   if (a>=1 && a<=5) answer1=a;
}
void GroupCohesivness::setAnswer2(int a) {
   if (a>=1 && a<=5) answer2=a;
}
void GroupCohesivness::setAnswer3(int a) {
   if (a>=1 && a<=5) answer3=a;
}
int GroupCohesivness::getAnswer0() const {
   return answer0;
}
int GroupCohesivness::getAnswer1() const {
   return answer1;
}
int GroupCohesivness::getAnswer2() const {
   return answer2;
}
int GroupCohesivness::getAnswer3() const {
   return answer3;
}
float GroupCohesivness::getGroupCohesiveness() const {
   return (answer0+answer1+answer2+answer3)/4.0;
}
// Two objects of that class are considered equal (==) if all the answers are the same
bool GroupCohesivness::operator==(const GroupCohesiveness& survey2) const {
   return answer0==survey2.answer0 && answer1==survey2.answer1 && answer2==survey2.answer2 && answer3==survey2.answer3;
}
// The sum (+) of two objects of that class returns a new objects whose answers are the average of the 2 operand's GroupCohesiveness answers.
GroupCohesiveness GroupCohesivness::operator+(const GroupCohesiveness& survey2) const {
   GroupCohesiveness temp;
   temp.answer0=(answer0+survey2.answer0)/2;
   temp.answer1=(answer1+survey2.answer1)/2;
   temp.answer2=(answer2+survey2.answer2)/2;
   temp.answer3=(answer3+survey2.answer3)/2;
   return temp;
}
// When passing one object of that class to cout operator, it displays the answers of the surveys enclosed by parentheses.
friend ostream& operator<<(ostream& os, const GroupCohesiveness& survey) {
   os << "(" << survey.answer0 << "," << survey.answer1 << "," << survey.answer2 << "," << survey.answer3 << ")";
   return os;
}
GroupCohesiveness::GroupCohesiveness() {
   answer0=1;
   answer1=1;
   answer2=1;
   answer3=1;
}
GroupCohesiveness::GroupCohesiveness(int a0, int a1, int a2, int a3) {
   answer0=a0;
   answer1=a1;
   answer2=a2;
   answer3=a3;
}
GroupCohesiveness::~GroupCohesiveness() {
   cout << "A Group Cohesiveness object has been removed from memory.";
}

Main.cpp

main() {
   GroupCohesiveness surveyA(1,2,3,2); 
   GroupCohesiveness surveyB(3,5,4,3);
   GroupCohesiveness surveyC;
   surveyC=surveyA;

   if (surveyA==surveyB) 
      cout << "Survey A and Survey B are equal" << endl;
   else
      cout << "Survey A and Survey B are not equal" << endl;
   if (surveyA==surveyC) 
      cout << "Survey A and Survey C are equal" << endl;
   else
     cout << "Survey A and Survey C are not equal" << endl;
   cout << "The average of Survey A and Survey B is: ";
   GroupCohesiveness temp;
   temp = surveyA+surveyB;
   cout << temp << endl;
}