public static void Main()
Console.WriteLine("Zadaj znamku");
int z= int.Parse(Console.ReadLine());
case 1: Console.WriteLine("Vyborny");
case 2: Console.WriteLine("Chvalitebny");
case 3: Console.WriteLine("Dobry");
case 4: Console.WriteLine("Dostatocny");
case 5: Console.WriteLine("Nedostatocny");
default: Console.WriteLine("Znamka neexistuje");