static void Main(string[] args)
{
Console.WriteLine("Hello World!");
var math = new MathClass();
var number = math.Calculate(1, 2, "Mul");
Console.WriteLine(number);
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Console.Write("Enter Number 1:");
var var1 = Console.ReadLine();
int num1 = Convert.ToInt32(var1);
Console.Write("Enter Number 2:");
var var2 = Console.ReadLine();
var num2 = Convert.ToInt32(var2);
Console.Write("Enter one Operator(Add/Sub/Mul/Div): ");
var op = Console.ReadLine();
MathClass math = new MathClass();
double result = math.Calculate(num1, num2, op);
Console.WriteLine("Result: {0}", result);
Console.WriteLine("Press any key to exit....");
Console.ReadKey(true);
}