Day 12: Inheritance

• Instructions:
  • Given 2 classes, Person and Student where:
    • Person is the base class and Student is the derived class
  • Complete the Student class by writing the following:
    • A Student constructor with 4 parameters:
    • 2 strings firstName & lastName
    • an integer idNumber
    • an integer array (or vector) of test scores, scores
  • A calculate() method that calculates a Student object’s average and returns the grade character representative of their calculated average
  • Constraints:
    • 1 <= length of firstName
    • length of lastName <= 10
    • length of idNumber <= 7
    • 0 <= score <= 100

Excercise

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
class Person:
    def __init__(self, firstName, lastName, idNumber):
        self.firstName = firstName
        self.lastName = lastName
        self.idNumber = idNumber
    def printPerson(self):
        print("Name:", self.lastName + ",", self.firstName)
        print("ID:", self.idNumber)

class Student(Person):
    #   Class Constructor

    #   Parameters:
    #   firstName - A string denoting the Person's first name.
    #   lastName - A string denoting the Person's last name.
    #   id - An integer denoting the Person's ID number.
    #   scores - An array of integers denoting the Person's test scores.

    # Write your constructor here
    

    #   Function Name: calculate
    #   Return: A character denoting the grade.
    #
    # Write your function here

line = input().split()
firstName = line[0]
lastName = line[1]
idNum = line[2]
numScores = int(input()) # not needed for Python
scores = list( map(int, input().split()) )
s = Student(firstName, lastName, idNum, scores)
s.printPerson()
print("Grade:", s.calculate())

Solution

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
class Person:
    def __init__(self, firstName, lastName, idNumber):
        self.firstName = firstName
        self.lastName = lastName
        self.idNumber = idNumber
    def printPerson(self):
        print("Name:", self.lastName + ",", self.firstName)
        print("ID:", self.idNumber)

class Student(Person):
    #   Class Constructor
    #   
    #   Parameters:
    #   firstName - A string denoting the Person's first name.
    #   lastName - A string denoting the Person's last name.
    #   id - An integer denoting the Person's ID number.
    #   scores - An array of integers denoting the Person's test scores.
    #
    # Write your constructor here
    def __init__(self,firstName,lastName,idNumber, scores):
        super().__init__(firstName, lastName, idNumber)
        self.scores = scores
    #   Function Name: calculate
    #   Return: A character denoting the grade.
    #
    # Write your function here
    def calculate(self):
        average = sum(self.scores)/len(self.scores)
        if 90 <= average <=100:
            return('O')
        elif 80 <= average < 90:
            return('E')
        elif 70 <= average < 80:
            return('A')
        elif 55 <= average < 70:
            return('P')
        elif 40 <= average < 55:
            return('D')
        elif average < 40:
            return('T')

line = input().split()
firstName = line[0]
lastName = line[1]
idNum = line[2]
numScores = int(input()) # not needed for Python
scores = list( map(int, input().split()) )
s = Student(firstName, lastName, idNum, scores)
s.printPerson()
print("Grade:", s.calculate())