Program to print sum of the series S=1+x+x2+x3+…………+xn

PROGRAM

WAP to find  sum of the series S=1+x+x²+x³+…………+xⁿ

/**

 * class sumseries finds sum of the series.

 * This program dosn't use built-in method pow().

 * @author: Nitendra Verma 

 * @version: June 8,2013

 */

import java.util.Scanner;

public class sumseries

{

    int num,limit;     //instance variables

    public sumseries() //default constructor, initializes both variables to 0 

    {

        num=0;

        limit=0;

    } 

    public void getlimit(int n,int l) //method, assigns parameter values to variables 

    {

        num=n;

        limit=l;

    }

    

    public int findpow(int x,int p)  //method, returns power value of number

    {

    int value=1;

        for(int i=0;i<p;i++)

        {

            value*=x;

        }

        return value;   //returning value

    }

    

    public void findsumseries()  //method, finds sum of the series

    {

        int sum=0;

        for(int i=0;i<limit;i++)

        {

            sum+=findpow(num,i);

        }

        System.out.println("Sum of the series= "+sum);

    }

    

    public static void main()

    {

        sumseries ob=new sumseries();   //creating object of class sumseries

        Scanner in=new Scanner(System.in);  //creating object of class Scanner

        System.out.println("Enetr the number");

        int num=in.nextInt();               //inputting value

        System.out.println("Enetr the limit");

        int limit=in.nextInt();             //inputting value

        ob.getlimit(num,limit);             //calling method

        ob.findsumseries();                 //calling method

    }

}

OUTPUT:

Enetr the number

3

Enetr the limit

3

Sum of the series= 13

/*---------------Program developed by: Nitendra Verma---------------*/

//For more details visit http://javawithnitendra.blogspot.in