Estimates pi by throwing points into a square. Use to compare execution times : Date Time « Development Class « C# / C Sharp

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C# / C Sharp » Development Class » Date Time Screenshots  Estimates pi by throwing points into a square. Use to compare execution times /* C# Programming Tips & Techniques by Charles Wright, Kris Jamsa Publisher: Osborne/McGraw-Hill (December 28, 2001) ISBN: 0072193794 */ // // CalcPi.cs -- Estimates pi by throwing points into a square. Use to //              compare execution times. // //              Compile this program with the following command line: //                  C:>csc CalcPi.cs // namespace CalcPi {     using System;     public class CalcPi     {         static void Main ()         {             const int throws = 10000000;             DateTime now = DateTime.Now;             Random rand = new Random ((int) now.Millisecond);             int Inside = 0;             for (int i = 0; i < throws; ++i)             {                 double cx = rand.NextDouble();                 double cy = rand.NextDouble();                 double distance = Math.Sqrt ((cx * cx) + (cy * cy));                 if (distance < 1.0)                     ++Inside;             }             double pi = 4 * (double) Inside / (double) throws;             DateTime End = DateTime.Now;             TimeSpan Diff = End - now;             Console.WriteLine ("pi = " + pi);             Console.WriteLine ("Milliseconds = " + Diff.TotalMilliseconds);         }     } }                     Related examples in the same category 1. Current date and time 2. Add 2 month to the date time 3. What day of the month is this? 4. Do some leap year checks 5. Look at the min and max date/time values 6. Output DateTime object 7. Add TimeSpan to DateTime 8. Constructors of DateTime 9. comparisons between DateTime objects 10. Parse and ParseExact 11. DateTime Now and its calculation 12. new DateTime(1900, 2, 29) 13. new DateTime(1900, 2, 29, new JulianCalendar()) 14. Specify Kind DateTime 15. Offset of DateTime 16. DateTime and TimeSpan Instances 17. use the Now and UtcNow properties to get the currrent date and time 18. display the Date, Day, DayOfWeek, DayOfYear,Ticks, and TimeOfDayProperties of myDateTime 19. use the Compare() method to compare DateTime instances 20. use the overloaded less than operator (<) to compare two DateTime instances 21. use the Equals() method to compare DateTime instances 22. use the DaysInMonth() method to retrieve the number of days in a particular month and year 23. use the IsLeapYear() method to determine if a particular year is a leap year 24. use the Parse() method to convert strings to DateTime instances 25. use the Add() method to add a TimeSpan to a DateTime 26. use the Subtract() method to subtract a TimeSpan from a DateTime 27. use the overloaded addition operator (+) to add a TimeSpan to a DateTime 28. use the overloaded subtraction operator (-) to subtract a TimeSpan from a DateTime 29. use the AddYears(), AddMonths(), AddDays(), AddMinutes(), and AddSeconds() methods to add periods to a DateTime 30. Measures the time taken to add some numbers 31. Illustrates the use of DateTime and TimeSpan instances 32. Displays the words 'Hello World!' on the screen, along with the current date and time 33. illustrates the use of TimeSpan properties and methods 34. A simple clock