Question

Use the concept of constructor override in C++ and create a class, which calculates areas of square, rectangle and a triangle. Override of the constructor should be controlled using the number of variables used for the object initialization. Feel free to use the method override in the same class. In the main function you should demonstrate examples for all three cases of the shapes.

Answer 1

#include <iostream>
using namespace std;

class Area {
    float a, b, c;

public:
    // Constructor for Square
    Area(float side) {
        a = side;
        cout << "Square Area = " << a * a << endl;
    }

    // Constructor for Rectangle
    Area(float length, float breadth) {
        a = length;
        b = breadth;
        cout << "Rectangle Area = " << a * b << endl;
    }

    // Constructor for Triangle
    Area(float base, float height, float dummy) {
        a = base;
        b = height;
        cout << "Triangle Area = " << 0.5 * a * b << endl;
    }
};

int main() {
    // Square
    Area obj1(5);

    // Rectangle
    Area obj2(5, 4);

    // Triangle
    Area obj3(6, 3, 0);

    return 0;
}