Factorial Number in JAVA

Program of 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

Program below :-

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