problems.py

class TwoDVector:
    def __init__(self, i, j):
        self.i = i
        self.j = j

    def show(self):
        print(f"The vector is {self.i}i + {self.j}j")

class ThreeDVector(TwoDVector):
    def __init__(self, i, j, k):
        super().__init__(i, j)
        self.k = k    
    
    def show(self):
        print(f"The vector is {self.i}i + {self.j}j + {self.k}k")

a  = TwoDVector(1, 2)
a.show()
b = ThreeDVector(1, 2, 3)
b.show()

#problem 2

class Animals:
    pass

class Pets(Animals):
    pass

class Dog(Pets):
    @staticmethod
    def bark():
        print("Bow Bow!!")

d = Dog()
d.bark()

# Problem 3

class Employee:
    salary = 234
    increment = 20

    @property
    def salaryAfterIncrement(self):
        return (self.salary + self.salary * (self.increment/100))
    
    @salaryAfterIncrement.setter
    def salaryAfterIncrement(self, salary):
        self.increment = ((salary/self.salary) - 1)*100

e = Employee()
e.salaryAfterIncrement  = 280.8
print(e.increment)

#Problem 4

class Complex:
    def __init__(self, r, i):
        self.r = r
        self.i = i

    def __add__(self, c2):
        return Complex(self.r + c2.r, self.i + c2.i)
    
    def __mul__(self, c2):
        real_part = self.r * c2.r - self.i * c2.i
        imag_part = self.r * c2.i + self.i * c2.r
        return Complex(real_part, imag_part)
    
    def __str__(self):
        return f"{self.r} + {self.i}i"

    def __len__(self):
        return 3
    
c1 = Complex(1, 2)
c2 = Complex(3, 4)

print(c1 + c2)
print(c1 * c2)

#Problem 5