public static void Main()
Console.WriteLine("enter a day");
int c = Int32.Parse(Console.ReadLine());
Console.WriteLine("it is january");
Console.WriteLine("it is february");
Console.WriteLine("it is a march");
Console.WriteLine("it is a april");
Console.WriteLine("it is a may");
Console.WriteLine("it is a june");
Console.WriteLine("it is a july");
Console.WriteLine("it is august");
Console.WriteLine("it is september");
Console.WriteLine("it is october");
Console.WriteLine("it is november");
Console.WriteLine("it is december");
Console.WriteLine("invalid");