C#: Add a number of whole and fractional values to a date and time

Last update on August 26 2025 12:49:06 (UTC/GMT +8 hours)

Write a C# Sharp program to add whole and fractional values to a date and time.

Sample Solution:-

C# Sharp Code:

using System;

public class Example11
{
    // Main method, entry point of the program
    public static void Main()
    {
        // An array of double values representing different hours
        double[] hours = {.08333, .16667, .25, .33333, .5, .66667, 1, 2, 
                          29, 30, 31, 90, 365};

        // Create a DateTime object with specific date and time (August 16, 2016, 12:00:00 PM)
        DateTime dateValue = new DateTime(2016, 8, 16, 12, 0, 0);

        // Iterate through each hour in the array
        foreach (double hour in hours)
        {
            // Display the original date and time along with the addition of 'hour' hours
            Console.WriteLine("{0} + {1} hour(s) = {2}", dateValue, hour, dateValue.AddHours(hour));
        }
    }
}

Sample Output:

8/16/2016 12:00:00 PM + 0.08333 hour(s) = 8/16/2016 12:04:59 PM                                               
8/16/2016 12:00:00 PM + 0.16667 hour(s) = 8/16/2016 12:10:00 PM                                               
8/16/2016 12:00:00 PM + 0.25 hour(s) = 8/16/2016 12:15:00 PM                                                  
8/16/2016 12:00:00 PM + 0.33333 hour(s) = 8/16/2016 12:19:59 PM                                               
8/16/2016 12:00:00 PM + 0.5 hour(s) = 8/16/2016 12:30:00 PM                                                   
8/16/2016 12:00:00 PM + 0.66667 hour(s) = 8/16/2016 12:40:00 PM                                               
8/16/2016 12:00:00 PM + 1 hour(s) = 8/16/2016 1:00:00 PM                                                      
8/16/2016 12:00:00 PM + 2 hour(s) = 8/16/2016 2:00:00 PM                                                      
8/16/2016 12:00:00 PM + 29 hour(s) = 8/17/2016 5:00:00 PM                                                     
8/16/2016 12:00:00 PM + 30 hour(s) = 8/17/2016 6:00:00 PM                                                     
8/16/2016 12:00:00 PM + 31 hour(s) = 8/17/2016 7:00:00 PM                                                     
8/16/2016 12:00:00 PM + 90 hour(s) = 8/20/2016 6:00:00 AM                                                     
8/16/2016 12:00:00 PM + 365 hour(s) = 8/31/2016 5:00:00 PM

Flowchart :

$Flowchart: C# Sharp Exercises - Add a number of whole and fractional values to a date and time.$

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