Example: Sum of Two Numbers using Class with Constructor in C++

// Sum of Two Numbers using Class with Constructor
#include <iostream>
using namespace std;

// Define a class named 'AdderWithConstructor'
class AdderWithConstructor {
private:
    int num1;
    int num2;

public:
    // Constructor to initialize num1 and num2
    AdderWithConstructor(int a, int b) {
        num1 = a;
        num2 = b;
        cout << "Object created and numbers initialized." << endl;
    }

    // Method to calculate the sum
    int calculateSum() {
        return num1 + num2;
    }

    // Method to display the sum
    void displaySum() {
        cout << "The sum of " << num1 << " and " << num2 << " is: " << calculateSum() << endl;
    }
};

int main() {
    // Step 1: Create an object of 'AdderWithConstructor', passing numbers directly to the constructor
    AdderWithConstructor anotherAdder(15, 25);

    // Step 2: Call the 'displaySum' method to show the result
    anotherAdder.displaySum();

    return 0;
}