Overloaded operators: Difference between revisions

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=={{header|C++}}==

Operator overloading is one of the classic features of C++, but truth be told, I am writing such code after 20 years.......

And yes, I know subtracting cuboids can give negative volumes. It's theoretically possible (remember volume or triple integrals ? ).

<lang cpp>

//Aamrun, 4th October 2021

#include <iostream>

using namespace std;

class Cuboid {

private:

double length;

double breadth;

double height;

public:

double getVolume(void) {

return length * breadth * height;

}

void setLength( double l ) {

length = l;

}

void setBreadth( double b ) {

breadth = b;

}

void setHeight( double h ) {

height = h;

}

Cuboid operator +(const Cuboid& c) {

Cuboid biggerCuboid;

biggerCuboid.length = this->length + c.length;

biggerCuboid.breadth = this->breadth + c.breadth;

biggerCuboid.height = this->height + c.height;

return biggerCuboid;

}

Cuboid operator -(const Cuboid& c) {

Cuboid smallerCuboid;

smallerCuboid.length = this->length - c.length;

smallerCuboid.breadth = this->breadth - c.breadth;

smallerCuboid.height = this->height - c.height;

return smallerCuboid;

}

};

int main() {

Cuboid c1;

Cuboid c2;

Cuboid c3;

double volume = 0.0;

c1.setLength(6.0);

c1.setBreadth(7.0);

c1.setHeight(5.0);

c2.setLength(12.0);

c2.setBreadth(13.0);

c2.setHeight(10.0);

volume = c1.getVolume();

std::cout << "Volume of 1st cuboid : " << volume <<endl;

volume = c2.getVolume();

std::cout << "Volume of 2nd cuboid : " << volume <<endl;

//Adding the two cuboids

c3 = c1 + c2;

volume = c3.getVolume();

std::cout << "Volume of 3rd cuboid after adding : " << volume <<endl;

//Subtracting the two cuboids

c3 = c1 - c2;

volume = c3.getVolume();

std::cout << "Volume of 3rd cuboid after subtracting : " << volume <<endl;

return 0;

}

</lang>

{{out}}

<pre>

Volume of 1st cuboid : 210

Volume of 2nd cuboid : 1560

Volume of 3rd cuboid after adding : 5400

Volume of 3rd cuboid after subtracting : -180