class Grade {
  let name: String
  var marks: Int
  var CGPA: String
  var grade: String

  init(name: String, marks: Int, CGPA: String, grade: String){
    self.name = name
    self.marks = marks
    self.CGPA = CGPA
    self.grade = grade
  }

  func Result(){
marks -=0
    if marks >= 80 {
      print("Your")
    }
  }


class Student: Grade {
  let level: String
  var CreditValue: Int

  init(level: String, CreditValue: Int, name: String, marks: Int, CGPA: String,grade: String){
    self.level = level
    self.CreditValue = CreditValue
    super.init(name:name, marks:marks, CGPA:CGPA, grade:grade)
  }
}

}