static void Main(string[] args)
{
IntParameters x = new IntParameters();
Console.WriteLine("Please enter first number then press Enter: ");
int firstNum = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Please enter second number or leave it blank and press Enter: ");
string str = Console.ReadLine();
int result;
if (str == "")
{
result = x.MathOperation(firstNum);
}
else
{
int secondNum = Convert.ToInt32(str);
result = x.MathOperation(firstNum, secondNum);
}
Console.WriteLine("The result of the math operation: " + result);
Console.ReadLine();
}
