Answer to Question #312468 in C# for disha

Question

Create a Date class with integer data members for year, month, and day. Also, include a string data member for the name of the month. Include a method that returns the month name (as a string) as part of the date. Separate the day from the year with a comma in that method. Include appropriate methods. Create the To_String() method to display the date formatted with slashes () separating the month, day, and year. Create a second class that 

    /instantiates and test the Date class. Make UML Diagram Also

Answer 1

using System;
using System.Collections.Generic;
using System.Globalization;


namespace App
{


    class Date
    {
        private int day, month, year;
        private int[] days_per_month = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
        private string[] monthNames = { "January", "February", "March", "April", "May", "June", "July", "August",
			"September", "October", "November", "December" };


        public Date(int month, int day, int year)
        {
            this.day = day;
            this.month = month;
            this.year = year;
        }


        /**
         * if the year number isn't divisible by 4, it is a common year;
         * 
         * otherwise, if the year number isn't divisible by 100, it is a leap year;
         * 
         * otherwise, if the year number isn't divisible by 400, it is a common year;
         * 
         * otherwise, it is a leap year.
         * 
         * @param year
         * @return
         */
        bool isLeapYear(int year)
        {
            return (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0));
        }


        public string To_String()
        {
            int days = days_per_month[this.month - 1];
            if (this.day > days)
            {
                return "Invalid number of days";
            }
            if (isLeapYear(year))
            {
                if (this.month == 2)
                {
                    days = 29;
                    if (this.day > days)
                    {
                        return "Invalid number of days";
                    }
                }
            }


            return monthNames[this.month - 1] + "/" + day + "/" + year;
        }


    }
    class Program
    {


        static void Main(string[] args)
        {
            Console.Write("Enter year: ");
            int year = int.Parse(Console.ReadLine());
            Console.Write("Enter month: ");
            int month = int.Parse(Console.ReadLine());
            Console.Write("Enter day: ");
            int day = int.Parse(Console.ReadLine());
            Date d = new Date(month, day, year);
            Console.Write(d.To_String());


            Console.ReadLine();
        }


    }
}