Find the factorial of a number

Find the factorial of a number

by Mukesh Yadav

JavaScript

/*Step 1: Start
Step 2: Declare variables n, factorial and i.
Step 3: Initialize variables
          factorial ← 1
          i ← 1
Step 4: Read value of n
Step 5: Repeat the steps until i = n
     5.1: factorial ← factorial*i
     5.2: i ← i+1
Step 6: Display factorial
Step 7: Stop*/
let factorial = 1;
let i = 1;
let n = parseInt(prompt('Enter value of n'));


for(i = 1; i <= n; i++){
	factorial = factorial * i;
}
/*while(i <= n){
	factorial = factorial * i;
	i = i + 1;
}*/
alert('factorial of ' + n + ' is:' + factorial);