In this post, we will learn how to add two numbers using functions in C++ Programming language.
In the previous post, we have seen how to add two numbers using the standard method. Here, we will use an user-defined function to find the sum of two numbers.
So, without further ado, let’s begin this tutorial.
C++ Program to Add Two Numbers Using Functions
// C++ Program to Add Two Numbers Using Functions
#include <iostream>
using namespace std;
int addTwo(int x, int y);
int main(){
int a, b, sum;
// Asking for input
cout << "Enter the first number: ";
cin >> a;
cout << "Enter the second number: ";
cin >> b;
// Calling out user-defined function
sum = addTwo(a, b);
// Displaying output
cout << "Sum of " << a << " and " << b << " is: " << sum << endl;
return 0;
}
int addTwo(int x, int y){
return (x + y);
}
Output
Enter the first number: 53
Enter the second number: 64
Sum of 53 and 64 is: 117
How Does This Program Work ?
int a, b, sum;
In this program, we have declared three integer data type variables named a, b and sum.
// Asking for input
cout << "Enter the first number: ";
cin >> a;
cout << "Enter the second number: ";
cin >> b;
The user is asked to enter two numbers. These numbers get stored in the a and b named variables.
// Calling out user-defined function
sum = addTwo(a, b);
Now, we call out the user-defined function named addTwo() to find the sum of two numbers.
int addTwo(int x, int y){
return (x + y);
}
In this program, we have defined an user-defined function named addTwo which passes two numbers as an argument and returns the sum of those two numbers.
// Displaying output
cout << "Sum of " << a << " and " << b << " is: " << sum << endl;
The sum of two numbers is displayed on the screen using the cout statement.
Conclusion
I hope after going through this post, you understand how to add two numbers using functions in C++ Programming language.
If you have any doubt regarding the program, then contact us in the comment section. We will be delighted to assist you.
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