# factorial program in java

## /*Program to calculate factorial of given number*/

factorial formula n!=1 * 2 * 3 * 4 ……….(n-1) * n

for example

factorial of 1! = 1

factorial of 2! = 1—2 = 2

factorial of 3! = 1—2—3 = 6

factorial of 4! = 1—2—3—4 = 24

factorial of 5! = 1—2—3—4—5 = 120

import java.util.*;

class P2

{

public static void main(String args[])

{

int i , number , factorial ;

Scanner sc=new Scanner(System.in);

System.out.println(“Enter Number”);

number = sc.nextInt(); //input factorial number

for (i=1,factorial=1 ; i<=number ; i++)

factorial = factorial * i ;

System.out.println(“The factorial of “+number+” : “+factorial);

}

}

Output of factorial program in java :

Enter Number : 7

The factorial of 7 : 5040

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