public static void Main()
Console.WriteLine(System.IO.Path.Combine("//", "C:/test/path/string/test"));
Console.WriteLine(System.IO.Path.Combine("//test/cats", "/test"));
Console.WriteLine(System.IO.Path.Combine("//test/cats", "/test"));
Console.WriteLine(System.IO.Path.Combine("C:/test/cats", "/test"));
Console.WriteLine(System.IO.Path.Combine("C:/test/cats", "C:"));