static void Main(string[] args)
{
double input = 0;
var calc = Operator.GetInstance();
while (input != 99)
{
Console.WriteLine("Choose Operator:\n1.Add\n2.Subtract\n3.Multiply\n4.Divide\n5.Quit");
input = Convert.ToDouble(Console.ReadLine());
//Console.WriteLine(input);
//Add
if (input == 1)
{
Console.WriteLine("First Number: ");
double num1 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Second Number: ");
double num2 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Sum: " + calc.Add(num1, num2) + "\n");
}
//Subtract
else if (input == 2)
{
Console.WriteLine("First Number: ");
double num1 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Second Number: ");
double num2 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Answer: " + calc.Subtract(num1, num2) + "\n");
}
//Multiply
else if (input == 3)
{
Console.WriteLine("First Number: ");
double num1 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Second Number: ");
double num2 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Answer: " + calc.Multiply(num1, num2) + "\n");
}
//Divide
else if (input == 4)
{
Console.WriteLine("First Number: ");
double num1 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Second Number: ");
double num2 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Answer: " + calc.Divide(num1, num2) + "\n");
}
//Quit
else if (input == 5)
{
input = 99;
}
else
{
Console.WriteLine("Not an Option. Try Again!\n");
}
}
}
