Add two Numbers using Class in C++

#include <iostream>

class Adder {
public:
    // Constructor to initialize the sum to 0
    Adder() : sum(0) {}

    // Method to set the first number
    void setNumber1(double num1) {
        number1 = num1;
    }

    // Method to set the second number
    void setNumber2(double num2) {
        number2 = num2;
    }

    // Method to perform the addition
    void add() {
        sum = number1 + number2;
    }

    // Method to display the result
    void display() {
        std::cout << "Sum: " << sum << std::endl;
    }

private:
    double number1;
    double number2;
    double sum;
};

int main() {
    Adder calculator; // Create an instance of the Adder class

    double num1, num2;

    // Get user input for the first number
    std::cout << "Enter the first number: ";
    std::cin >> num1;

    // Get user input for the second number
    std::cout << "Enter the second number: ";
    std::cin >> num2;

    // Set the numbers and perform the addition
    calculator.setNumber1(num1);
    calculator.setNumber2(num2);
    calculator.add();

    // Display the result
    calculator.display();

    return 0;
}