Example: Sum of Two Numbers using Basic Class in C++

C
C++
C#
Java
Python
PHP
// Sum of Two Numbers using Basic Class
#include <iostream>
using namespace std;

// Define a class named 'Adder'
class Adder {
private:
    int num1; // Private data member to store the first number
    int num2; // Private data member to store the second number

public:
    // Method to set the two numbers
    void setNumbers(int a, int b) {
        num1 = a;
        num2 = b;
    }

    // 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 (instance) of the 'Adder' class
    Adder myAdder;

    // Step 2: Set the numbers using the 'setNumbers' method
    myAdder.setNumbers(10, 20);

    // Step 3: Call the 'displaySum' method to show the result
    myAdder.displaySum();

    return 0;
}