I would have solved it this way:
namespace check_Numbers
{
class Program
{
static void Main(string[] args)
{
string[] seperators = {",", " ", ";", "."};
int num2;
Console.WriteLine("Input numbers over 10:");
string[] splitArray = Console.ReadLine().Split(seperators, StringSplitOptions.RemoveEmptyEntries);
foreach (string num in splitArray)
{
If(Int32.TryParse(num, out num2) == true)
{
if (num2 < 10)
{
Console.WriteLine(num + " is smaller than 10");
}
}
else
{
Console.WriteLine(num + " is not a f***ing number...");
}
}
}
}
}