which C# data structure to use to create string calculator code example

Example 1: create and use python classes

class Mammal:
    def __init__(self, name):
        self.name = name

    def walk(self):
        print(self.name + " is going for a walk")


class Dog(Mammal):
    def bark(self):
        print("bark!")


class Cat(Mammal):
    def meow(self):
        print("meow!")


dog1 = Dog("Spot")
dog1.walk()
dog1.bark()
cat1 = Cat("Juniper")
cat1.walk()
cat1.meow()

Example 2: how to create an unknown amount of objects in c++

Box **array = new Box*[n];
for(int i = 0; i < n; i += 1) {
    array[i] = new Box();
}