Print the factorial value of an input number 

Module Module1
    Sub main()
        'program to print the factorial value of a input number

        'declaring the datatypes
        Dim num, factorial As Integer

        'initializing the value of factorial
        factorial = 1

        'entry of the number
        Console.WriteLine("Enter the number whose factorial value you want to be generated ")
        num = Console.ReadLine

        'start of the while loop to calculate the factorial value of the input number
        While num <> 0
            factorial = factorial * num
            num = num - 1
        End While

        'generating the output of the factorial value
        Console.WriteLine("The factorial value of the number you entered is " & factorial)

        Console.ReadLine() ' this line of code holds the screen so that you can see the output
    End Sub
End Module

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