Swift Program to calculate student grade using function

 Calculating the student grade using functions

//Creating and storing a variable

    var percentage:Float = 100

    //Creating a function for grades

    func grades()

    {

        //if condition to check student grades

                if (percentage >= 70 && percentage <= 100)

                {

                    print("Congratulations! you got First class with Distinction")

                  }

                  else if (percentage >= 60 && percentage < 70)

                  {

                      print("Congratulations! you got First class")

                  }

                  else if (percentage >= 50 && percentage < 60)

                  {

                      print("Congratulations! you got Second class")

                  }

                  else if (percentage >= 35 && percentage < 50)

                  {

                      print("Congratulations! you got Compartmental class")

                  }

                  

    }