C#: Date of past and future fifteen years of a specified date

Last update on August 26 2025 12:49:08 (UTC/GMT +8 hours)

Write a C# Sharp program to display the date of the past and future fifteen years from a specified date.

Sample Solution:-

C# Sharp Code:

using System;

public class Example15
{
    // Main method, entry point of the program
    public static void Main()
    {
        // Define a base date as February 29, 2016
        DateTime baseDate = new DateTime(2016, 2, 29);

        // Display the base date
        Console.WriteLine("    Base Date:        {0:d}\n", baseDate);

        // Show dates of previous fifteen years
        for (int ctr = -1; ctr >= -15; ctr--)
        {
            // Calculate and display dates 'ctr' years ago from the base date
            Console.WriteLine("{0,2} year(s) ago:        {1:d}", Math.Abs(ctr), baseDate.AddYears(ctr));
        }
        Console.WriteLine(); // Empty line for separation

        // Show dates of next fifteen years
        for (int ctr = 1; ctr <= 15; ctr++)
        {
            // Calculate and display dates 'ctr' years from now from the base date
            Console.WriteLine("{0,2} year(s) from now:   {1:d}", ctr, baseDate.AddYears(ctr));
        }
    }
}

Sample Output:

    Base Date:        2/29/2016                                                                               
 1 year(s) ago:        2/28/2015                                                                              
 2 year(s) ago:        2/28/2014                                                                              
 3 year(s) ago:        2/28/2013                                                                              
 4 year(s) ago:        2/29/2012                                                                              
 5 year(s) ago:        2/28/2011                                                                              
 6 year(s) ago:        2/28/2010                                                                              
 7 year(s) ago:        2/28/2009                                                                              
 8 year(s) ago:        2/29/2008                                                                              
 9 year(s) ago:        2/28/2007                                                                              
10 year(s) ago:        2/28/2006                                                                              
11 year(s) ago:        2/28/2005                                                                              
12 year(s) ago:        2/29/2004                                                                              
13 year(s) ago:        2/28/2003                                                                              
14 year(s) ago:        2/28/2002                                                                              
15 year(s) ago:        2/28/2001   
1 year(s) from now:   2/28/2017                                                                              
 2 year(s) from now:   2/28/2018                                                                              
 3 year(s) from now:   2/28/2019                                                                              
 4 year(s) from now:   2/29/2020                                                                              
 5 year(s) from now:   2/28/2021                                                                              
 6 year(s) from now:   2/28/2022                                                                              
 7 year(s) from now:   2/28/2023                                                                              
 8 year(s) from now:   2/29/2024                                                                              
 9 year(s) from now:   2/28/2025                                                                              
10 year(s) from now:   2/28/2026                                                                              
11 year(s) from now:   2/28/2027                                                                              
12 year(s) from now:   2/29/2028                                                                              
13 year(s) from now:   2/28/2029                                                                              
14 year(s) from now:   2/28/2030                                                                              
15 year(s) from now:   2/28/2031

Flowchart:

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