Use of Java program to subtraction of two numbers using recursion

Karmehavannan

5 years ago

Use of Java program to subtraction of two numbers using the recursion

In this tutorial, we will discuss the Use of Java program to subtraction of two numbers using the recursion

In this topic, we are going to learn how to subtract two numbers using the recusive function in Java language

already we are learned the same concept using the operator

if you want to remember click here, Java program to subtract two numbers

Program to subtraction of two numbers using recursion

The program allows to enter two integer numbers and then it calculates the subtraction of the given numbers using recursive function

Program 1

import java.util.Scanner;
public class SubTwoNumbersRec{
public static void main(String args[]){
int sub;
Scanner scan=new Scanner(System.in);
//create a scanner instance for receives input
// from the user - input from keyboard
System.out.print("Enter the value to num1: ");
int num1=scan.nextInt();
System.out.print("Enter the value to num2: ");
int num2=scan.nextInt();

//reads the numbers from the user
//input from keyword
sub=subtract(num1,num2);//call te method
System.out.print("Subtraction of two numbers: "+sub);
}
static int subtract(int num1, int num2)//method definition
{
    if(num2==0)
        return num1;
    else
        return subtract((num1-1),(num2-1));
    
}
}

When the above code isexecuted, it produces the folowing result

Enter the value to num1: 56
Enter the value to num2: 20
Subtraction of two numbers:26

Declare three int type variables num1,num2,sub. num1,num2 are used to received input from the user whereas the sub is used to assign the output
Receive input from the user for num1,num2 to perform subtraction
Define a recursive method to subtract two numbers
When the method is called, two numbers will be passed as argument subsequently the subtract of two numbers will be found
Then, assign te output to the variable sub
display the result on the screen