C++ Program to Enter Two Numbers and Find their Sum

C++ program to enter two numbers and find their sum.

In this article, you will learn how to find the sum of two numbers entered by the user.

Example

We will solve this problem in three approaches:

1. Using the Integer values
2. Using the minimal variables
3. Using the Real values

You should know about the following topics in C++ programming to understand this program:

• C++ Variables

Example-1 Using the Integer values

// C++ program to find the sum of two integers
#include <iostream>
using namespace std;

// It's the main function of the program
int main() {
    int p, q, r;
    
    // Step-1 Take inputs from the user
    cout << "Enter two integer values::\n";
    cin >> p >> q;

    // Step-2 Calculating the sum of input numbers
    r = p + q;
    
    // Step-3 Final output of the program
    cout << "Result:: " << p << " + " << q << " = " << r << endl;
    return 0;
}

Run

Output

Example-2 Using the minimal variables

// C++ program to find the sum of two integers with minimum variables
#include <iostream>
using namespace std;

// It's the main function of the program
int main() {
    int p, q;
    
    // Step-1 Take inputs from the user
    cout << "Enter two integer values::\n";
    cin >> p >> q;
    
    cout << "Result:: " << p << " + " << q << " = ";

    // Step-2 Calculating the sum of input numbers
    p = p + q;
    
    // Step-3 Final output of the program
    cout << p << endl;
    return 0;
}

Run

Output

Example-3 Using the Real values

// C++ program to find the sum of two real numbers
#include <iostream>
using namespace std;

// It's the main function of the program
int main() {
    float p, q;
    
    // Step-1 Take inputs from the user
    cout << "Enter two float values::\n";
    cin >> p >> q;
    
    cout << "Result:: " << p << " + " << q << " = ";

    // Step-2 Calculating the sum of input numbers
    p = p + q;
    
    // Step-3 Final output of the program
    cout << p << endl;
    return 0;
}

Run

Output