This programming tutorial will teach you how to write a factorial of any given number. Factorial of a non-negative integer is denoted by n!, which is product of all positive number less than or equal to n. For example

4! = 4 * 3 *2 * 1 that is equal to 24, and factorial of 0! is 0 always.

**Example** : A program to find the factorial of any given number

import java.util.Scanner; class Factorial { public static void main(String args[]) { int fact=1; System.out.println("Enter the number to find the factorial"); Scanner sin=new Scanner(System.in); int f=sin.nextInt(); for(int i=1;i<=f;i++) { fact=fact*i; } System.out.println("factorial of "+f+" is = " +fact); } }

**Description : **In the above example suppose user entered 5,
then 5 is stored in scanner class object and using for loop, iterating the
loop from 1 to 5(i<=f) until it reaches 5 multiplying each value of i with fact
value i.e. 1 and storing it in fact variable. Loop will iterate five times (
1=1*1, 2=1*2 ......) and stored in fact variable, when the value of i become 5
control come out from the loop and print the value of fact.

**Output : **Compiling and executing the above program.

Advertisements

Posted on: May 23, 2013 If you enjoyed this post then why not add us on Google+? Add us to your Circles

Share this Tutorial Follow us on Twitter, or add us on Facebook or Google Plus to keep you updated with the recent trends of Java and other open source platforms. Connect Me on Google+

Comments:1

June 28, 2013

question

write the a program using visual basic to find the factoria of any integer

Discuss: Write a program to find a factorial in any given numberPost your Comment