import math
from datetime import datetime


class Program:
    """
    Class to specify the program like as in C#
    """

    def __init__(self):
        pass

    @staticmethod
    def sqrt(input_value: float) -> float:
        """
        Calculates the square root of a value
        :param input_value:
        :return:
        """
        return float(math.sqrt(input_value))

    @staticmethod
    def date(date_one: datetime, date_two: datetime):
        """
        Calculates to difference of two dates
        :param date_one:
        :param date_two:
        :return:
        """
        return abs(date_one - date_two).days

    @staticmethod
    def get_input(output: str) -> str:
        """
        Gets input and gives a given output
        Prints given output and gives given input
        :param output:
        :return:
        """
        input_value = input(output)
        if input_value == 'x':
            exit()

        return input_value

    def main(self):
        """
        Start point of Program
        :return:
        """
        input_value = float(self.get_input('Wurzel aus: '))
        print(f'Die Wurzel aus {input_value} ist {self.sqrt(input_value)}')

        date1 = datetime.strptime(self.get_input('Datum 1: '), '%d.%m.%Y')
        date2 = datetime.strptime(self.get_input('Datum 2: '), '%d.%m.%Y')
        print(f'Die Differenz aus {date1} und {date2} ist {self.date(date1, date2)}')