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Writer's pictureSatyam Gupta

Factorial Number in JAVA

Factorial Number


Program to calculate factorial of a number


Factorial of a positive integer is the multiplication of all positive integers greater than 0 and smaller than or equal to the number. Factorial of a number is denoted by (!) sign.


Example : 5! = 5*4*3*2*1 = 120

6! = 6*4*3*2*1 = 720

 

Program :-


import java.io.*;

import java.util.*;

class Factorial

{

    public static void main(String args[])

    {

        Scanner in=new Scanner(System.in);

        int n,i,p=1;

        System.out.println("Enter Number");

        n= in.nextInt(); //Input number from user

        for(i=1;i<=n;i++) //Loop from 1 to the entered number

        {

            p=p*i; // calculating factorial

        }

        System.out.println("Factorial of "+n+" is:  "+p);//Printing result

    } // end of main method

} // end of class

 

Note : The program is written in the easiest way possible so try understand it. If you face any problem in understanding this program than feel free to contact/comment.


All the Best :)

Keep Learning :)

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