Mental Approach to solving prime checking? [closed]

by 

using System;

class Prime_Screening
    {
    bool prime;
    static void Main()
        {
        Console.WriteLine("Prime numbers x, where: 0 < x < 100");

            for (int num= 2; num<= 100; num++)
            {

                prime = True;
                for (int div= 2; div<= Math.Sqrt(num); div++)
                    if(num % div== 0)
                        prime = False;
                if (prime)
                    Console.Write(num.ToString() + ", ");
            }
        } 
    }

The way this works is pretty simple:

It checks if any of the divisors are a factor of the number at hand and if so sets the variable prime to false. Otherwise, prime remains true and the number gets printed.

More Related Contents:

  1. How to make code more simple (if/else) [closed]
  2. C# regex replace of numbers and units
  3. What’s the use/meaning of the @ character in variable names in C#?
  4. Remove weird characters ( A with hat) from SQL Server varchar column
  5. System.UnauthorizedAccessException while running .exe under program files
  6. Unzip files programmatically in .net
  7. ASP.NET Core 1.0 on IIS error 502.5
  8. C# little endian or big endian?
  9. What Advantages of Extension Methods have you found? [closed]
  10. How can I determine for which platform an executable is compiled?
  11. How can I catch a 404?
  12. how I can show the sum of in a datagridview column?
  13. How do I get the network interface and its right IPv4 address?
  14. Vertical Text in Wpf TextBlock
  15. Comparing 2 objects and retrieve a list of fields with different values
  16. Entity Framework Specification Pattern Implementation
  17. Copy MemoryStream to FileStream and save the file?
  18. Start android service from Unity3D code
  19. Can I use extension methods and LINQ in .NET 2.0 or 3.0?
  20. C# rotate bitmap 90 degrees
  21. Octal equivalent in C#
  22. Force to close MessageBox programmatically
  23. Change language at runtime in C# winform
  24. JSONResult to String
  25. How do I get a return value from Task.WaitAll() in a console app?
  26. Throwing exceptions in callback method for Timers
  27. How does one “disable” a button in WPF using the MVVM pattern?
  28. How to get hold of all the blobs in a Blob container which has sub directories levels(n levels)?
  29. Implementing recursive property loading in EF Core
  30. Prevent timezone conversion on deserialization of DateTime value

Leave a Comment