Example: Program to Add Two Integers

#include <iostream>
using namespace std;

int main(){
    int firstNumber, secondNumber, sumOfTwoNumbers;
    
    cout << "Enter two integers: ";
    cin >> firstNumber >> secondNumber;

    // sum of two numbers in stored in variable sumOfTwoNumbers
    sumOfTwoNumbers = firstNumber + secondNumber;

    // Prints sum 
    cout << firstNumber << " + " <<  secondNumber << " = " << sumOfTwoNumbers;     

    return 0;
}

Output

Enter two integers: 4
5
4 + 5 = 9

In this program, user is asked to enter two integers. These two integers are stored in variables firstNumber and secondNumber respectively.

Then, the variables firstNumberand secondNumber are added using + operator and stored in sumOfTwoNumbers variable.

Finally, sumOfTwoNumbers is displayed on the screen.