Use of Java program to find sum of two numbers using recursion

Java program to find sum of two numbers using recursion

In this tutorial, we will discuss a concept of the  Java program to find sum of two numbers using recurtion

In this article, we are going to learn  how to  find sum of two numbers using recursion in the Java programming language

Program

This program allows entering two digits to find the addition of two numbers using the recursive function in Java programming language

import java.util.Scanner;
class AddTwoNum{
public static void main(String args[]){
    int sum,x,y;  //variable declaration     //1
    Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the value for x: ");
x=scan.nextInt();                              //2
System.out.print("Enter the value for y: ");
y=scan.nextInt();

     sum=add(x,y);         //3,4
   System.out.print("Sum of two numbers are:"+sum);//5
} 
static int add(int x, int y)    //recursive method definition
{
    if(y==0)
        return x;
    else
        return(1+add(x,y-1));
}
}

When the above code is executed, it produces the following results

Enter the value for x: 25
Enter the value for y: 35
Summof two numbers are:60

Method

1. Declare the three int type variables x,y and sum. x and y are used to receive input from the user whereas the sum is used to assign the output.
2. Receive input from the user for x, y to perform addition.
3. When the function is called, two numbers will be passed as an argument. Subsequently,  the sum of the two numbers will be found.
4. Then, assign the output to the variable sum
5. Display the result on the screen.

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