Algorithm to Calculate Factorial of A Number

Step 1 : Start

Step 2 : Read Number ,Set i = 1, Factorial = 1

Step 3 : if  i < = Number then go to Step 4
             else go to Step 7

Step 4 : Factorial = Factorial * i

Step 5 : Increment i 

Step 6 : go to Step 3

Step 7 : Print Factorial

Step 8 : Stop