A Collection of Code Snippets in as Many Programming Languages as Possible

This project is maintained by TheRenegadeCoder

Welcome to the Prime Number in C# page! Here, you'll find the source code for this program as well as a description of how the program works.

```
using System;
using Math = System.Math;
namespace SamplePrograms
{
public class PrimeNumber
{
public static bool IsPrime(ulong x)
{
if (x <= 1)
return false;
if (x != 2 && x % 2 == 0)
return false;
for (ulong i = 3; i <= Convert.ToUInt64(Math.Sqrt(x)); i += 2)
{
if (x % i == 0)
return false;
}
return true;
}
public static void Main(string[] args)
{
try
{
var n = ulong.Parse(args[0]);
if (n > 18446744073709551615) // Max of a ulong in C#
{
Console.WriteLine(string.Format("{0} is out of the reasonable bounds for calculation.", n));
Environment.Exit(1);
}
var result = IsPrime(n) ? "Prime" : "Composite";
Console.WriteLine(result);
}
catch
{
Console.WriteLine("Usage: please input a non-negative integer");
Environment.Exit(1);
}
}
}
}
```

Prime Number in C# was written by:

- Parker Johansen

If you see anything you'd like to change or update, please consider contributing.

No 'How to Implement the Solution' section available. Please consider contributing.

No 'How to Run the Solution' section available. Please consider contributing.