Example: Area Calculator using Function Overloading in C++

// Area Calculator using Function Overloading
#include <iostream>
const double PI = 3.14159;

// Function to calculate the area of a circle
double calculateArea(double radius) {
    return PI * radius * radius;
}

// Function to calculate the area of a rectangle (overloaded)
double calculateArea(double length, double width) {
    return length * width;
}

// Function to calculate the area of a triangle (overloaded with a dummy parameter)
double calculateArea(double base, double height, int dummy) { // 'dummy' is just to differentiate the signature
    return 0.5 * base * height;
}

int main() {
    // Step 1: Calculate area of a circle
    double radius = 5.0;
    std::cout << "Area of Circle with radius " << radius << ": " << calculateArea(radius) << std::endl;

    // Step 2: Calculate area of a rectangle
    double length = 4.0;
    double width = 6.0;
    std::cout << "Area of Rectangle with length " << length << " and width " << width << ": " << calculateArea(length, width) << std::endl;

    // Step 3: Calculate area of a triangle
    double base = 7.0;
    double height = 3.0;
    // Pass any integer value for the dummy parameter, e.g., 0 or 1
    std::cout << "Area of Triangle with base " << base << " and height " << height << ": " << calculateArea(base, height, 0) << std::endl;

    return 0;
}