In this tutorial you will learn about the Java Program to Find sum of N Natural numbers and its application with practical example.
In this tutorial, we will learn to create a Java Program to Find sum of N Natural numbers using Java programming.
Prerequisites
Before starting with this tutorial we assume that you are best aware of the following Java programming topics:
- Java Operators.
- Basic Input and Output
- Class and Object.
- Basic Java programming.
- Loop in Java
- While loop For loops.
What Is Natural Number?
Mathematically ,Natural numbers are those numbers used for counting and ordering,Simply all the counting numbers {1, 2,3.4…} are commonly called Natural numbers.Natural numbers include all the positive integers from 1 to infinity.
Java Program to Calculate the Sum of Natural Numbers
Firstly we declare required header file and variable and also initiates required values in variable. Next we take value from user at run time and then after we will find the sum of all N natural number of given number.
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import java.util.Scanner; public class Natural_num { public static void main(String[] args) { int num = 10, i = 1, sum = 0; // declaring variables System.out.println("Please enter the value of n:"); Scanner scan = new Scanner(System.in); num = scan.nextInt(); // taking value from user.. while(i <= num) // adding N natural values.. { sum += i; i++; } // Printing sum or N natural Number. System.out.println("Sum = " + sum); } } |
Output
In our program we iterate from 1 to the given (15) and adds all numbers to the variable Sum
sum=sum+i. and after calculating value we will print sum or all natural number.
In the above program, we have first declared and initialized a set variables required in the program.
- number=to take value from user.
- i =For iteration.
- sum = for counting sum of numbers.
In the above program, we have first declared and initialized a set variables required in the program. In our program first we will take a value from user.After that we will start loop from 1 to given number.
Within the while loop, we add all values in variable Sum .After calculating values of all natural number between the given numbers natural number.
and finally we print sum of the all “N” Natural number between 1 to given number.
