## Q. Java Program to Find Factorial of a Given Number.

Here you will find an algorithm and program in Java programming language to find factorial of a number. First let us understand what factorial means.

**Explanation : **The factorial of a number is the product of all the integers from 1 to that number.

**For Example : **
Factorial of 5 is 120 i.e. 5*4*3*2*1

## Algorithm to find factorial of a given number

START step 1 : Read the number n step 2 : [Initialize] i=1, fact=1 step 3 : Repeat step 4 through 6 until i=n step 4 : fact=fact*i step 5 : i=i+1 step 6 : Print fact STOP

# Java Program to Find Factorial of a Number

public class LFC { public static void main(String[] args) { int num = 7; long factorial = 1; for(int i = 1; i <= num; ++i) { // factorial = factorial * i; factorial *= i; } System.out.printf("Factorial of %d = %d", num, factorial); } }

#### Output

Factorial of 7 = 5040