static void Main(string[] args)
{
Console.WriteLine("Hello World for new version of E4!");
CalculatorModel cal = new CalculatorModel();
int a = 10;
int b = 2;
int addres = cal.Add(a, b);
int subres = cal.Sub(a, b);
int multres = cal.Mult(a, b);
int divres = cal.Div(a, b);
Console.WriteLine("The result of adding " + a + " and " + b + " is = " + addres);
Console.WriteLine("The result of subtracting " + a + " from " + b + " is = " + subres);
Console.WriteLine("The result of multiplying " + a + " by " + b + " is = " + multres);
Console.WriteLine("The result of dividing " + a + " by " + b + " is = " + divres);
Console.WriteLine("Press any key to exit.");
Console.ReadLine();
}