public static void Main()
Console.WriteLine("Product of first 10 integer numbers is: " + product);
Console.WriteLine("Product of first 20 integer numbers is: " + product2);
Console.WriteLine("Product of first 10 integer numbers is: " + product3);
Console.WriteLine("Product of first 20 integer numbers is: " + product4);
for (guass = 1777; guass<= 2022; guass++)
Console.WriteLine("Total sum between 1777 and 2022: " + answer);