Answer:
monitor fileSharer
{
enum {THINKING, WAITING, READING} state[N];
condition self[N];
int total;
void open(int i) {
state[i] = WAITING;
if (i + total >= N)
{ self[i].wait(); } // Leaves monitor
state[i] = READING;
total += i;
}
void close(int i) {
state[i] = THINKING;
total -= i;
// Can signal one waiting proc whose ID won't break bank.
for (int x = N - total - 1; x >= 0; x--) {
if (state[x] == WAITING) {
self[x].signal(); break;
}
}
}
initialization.code() {
for (int i = 0; i < N; i++) {
state[i] = THINKING;
}
total = 0;
}
}
Answer: B) Shape is a base class, and circle and square are derived classes of Shape.
Explanation:
Shape is a base class because circle and squares are the shapes so these are the derived class of the shape, which is inherited by the shape like circle and square. As, the base class (shape) is the class which are derived from the other classes like circle and square and it facilitates other class which can simplified the code re-usability that is inherited from the base class. Base class is also known as parent class and the super class.
Answer:
sadness and depression is my answer
Explanation:
Answer:
See explaination
Explanation:
# shapes.py
import math class Circle: def __init__(self, radius = 0): self.__radius = radius self.__area = math.pi * self.__radius ** 2 self.__circumference = 2 * math.pi * self.__radius def set_radius(self, radius): self.__radius = radius self.__area = math.pi * self.__radius ** 2 self.__circumference = 2 * math.pi * self.__radius def get_radius(self): return self.__radius def get_area(self): return self.__area def get_circumference(self): return self.__circumference class Rectangle: def __init__(self, length = 0, breadth = 0): self.__length = length self.__breadth = breadth self.__calc_area() self.__calc_perimeter() def __calc_area(self): self.__area = self.__length * self.__breadth def __calc_perimeter(self): self.__perimeter = 2 * (self.__length + self.__breadth) def set_length(self, length): self.__length = length self.__calc_area() self.__calc_perimeter() def set_breadth(self, breadth): self.__breadth = breadth self.__calc_area() self.__calc_perimeter() def get_length(self): return self.__length def get_breadth(self): return self.__breadth def get_area(self): return self.__area def get_perimeter(self): return self.__perimeter
# testShapes.py (Main program)
import shapes if __name__ == "__main__": print("a. Circle") print("b. Rectangle") choice = input("\nChoose a Shape to continue: ") if choice == "a": radius = int(input("\nEnter Radius of the Circle: ")) myCircle = shapes.Circle(radius) print("\nArea of Circle:", myCircle.get_area()) print("Circumference of Circle:", myCircle.get_circumference()) reset = input("Do you want to change Radius (y/n): ") if reset == "y" or reset == "Y": radius = int(input("\nEnter new Radius of the Circle: ")) myCircle = shapes.Circle(radius) print("\nArea of Circle:", myCircle.get_area()) print("Circumference of Circle:", myCircle.get_circumference()) elif choice == "b": length = int(input("\nEnter length of Rectangle: ")) breadth = int(input("Enter breadth of Rectangle: ")) myRectangle = shapes.Rectangle(length, breadth) print("\nArea of Rectangle:", myRectangle.get_area()) print("Perimeter of Rectangle:", myRectangle.get_perimeter()) reset = input("Do you want to change Length and Breadth (y/n): ") if reset == "y" or reset == "Y": length = int(input("\nEnter new length of Rectangle: ")) breadth = int(input("Enter new breadth of Rectangle: ")) myRectangle = shapes.Rectangle(length, breadth) print("\nArea of Rectangle:", myRectangle.get_area()) print("Perimeter of Rectangle:", myRectangle.get_perimeter()) else: print("Invalid choice!!! \'", choice, "\'\nExiting...")
