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LAST UPDATED: OCTOBER 31, 2020

Hello Everyone!

In this tutorial, we will learn how to demonstrate the concept of `+` Operator Overloading, in the C++ programming language.

To understand the concept of Operator Overloading in CPP, we will recommend you to visit here: C++ Operator Overloading, where we have explained it from scratch.

Code:

``````#include <iostream>

using namespace std;

//defining the class Cuboid to demonstrate the concept of Plus Operator Overloading in CPP
class Cuboid {
//Declaring class member variables as public to access from outside the class
public:
double length; // Length of Cuboid
double height; // Height of Cuboid

public:
double getVolume(void) {
return length * breadth * height;
}
void setLength(double l) {
length = l;
}

void setBreadth(double b) {
}

void setHeight(double h) {
height = h;
}

// Overload + operator to add two Cuboid objects with each other.
Cuboid operator + (const Cuboid & c) {
Cuboid cuboid;
cuboid.length = this -> length + c.length;
cuboid.height = this -> height + c.height;
return cuboid;
}
};

//Defining the main method to access the members of the class
int main() {

cout << "\n\nWelcome to Studytonight :-)\n\n\n";
cout << " =====  Program to demonstrate the Plus Operator Overloading, in CPP  ===== \n\n";

//Declaring the Class objects to access the class members
Cuboid c1;
Cuboid c2;
Cuboid c3;

//To store the volume of the Cuboid
double volume = 0.0;

// Setting the length, breadth and height for the first Cuboid object: c1
c1.setLength(3.0);
c1.setHeight(5.0);

// Setting the length, breadth and height for the second Cuboid object: c2
c2.setLength(2.0);
c2.setHeight(8.0);

// Finding the Volume of the first Cuboid: c1
cout << "Calling the getVolume() method to find the volume of Cuboid c1\n";
volume = c1.getVolume();
cout << "Volume of the Cuboid c1 is : " << volume << "\n\n\n";

// Finding the Volume of the first Cuboid: c1
cout << "Calling the getVolume() method to find the volume of Cuboid c2\n";
volume = c2.getVolume();
cout << "Volume of the Cuboid c2 is : " << volume << "\n\n\n";

// Adding the two Cuboid objects c1 and c2 to form the third object c3:
c3 = c1 + c2;

// Printing the dimensions of the third Cuboid: c3
cout << "Length of the Cuboid c3 is : " << c3.length << endl;
cout << "Breadth of the Cuboid c3 is : " << c3.breadth << endl;
cout << "Height of the Cuboid c3 is : " << c3.height << endl;

// Finding the Volume of the third Cuboid: c3
cout << "\n\nCalling the getVolume() method to find the volume of Cuboid c3\n";
volume = c3.getVolume();
cout << "Volume of the Cuboid c3 is : " << volume << endl;
cout << "\n\n\n";

return 0;
}``````

Output:

We hope that this post helped you develop a better understanding of the concept of Operator Overloading in C++. For any query, feel free to reach out to us via the comments section down below.

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