static void Main(string[] args)
{
/* Sometimes it is good to write things that are not there yet.
* Make placeholders for those things instead. Like writing the InputConverter line before making the class for it.
* This is kinda like test-driven development, because you make the backbone first
* the errors will go away if you put the right code for the placeholders.
*
* Single responsibility principle = cutting the code in pieces for more overview
*
* There will be an exception when the input is not numeric. To catch this, put all code in a try-catch statement.
*/
string answer;
do
{
try
{
//inputconverter for converting the input from string to a numeric type
InputConverter inputConverter = new InputConverter();
//engine to do the calculation
CalculatorEngine calculatorEngine = new CalculatorEngine();
//to get the inputs
//the inputs are double to account for floating point numbers
//Console.ReadLine = parameter
//ConvertInputToNumeric = method that converts the input
Console.Write("Type in a first number: ");
double firstNumber = inputConverter.ConvertInputToNumeric(Console.ReadLine());
Console.Write("Type in a second number: ");
double secondNumber = inputConverter.ConvertInputToNumeric(Console.ReadLine());
Console.Write("Type in a operator: ");
string operation = Console.ReadLine();
/* To perform the calculation and store the result of the calculation in a variable.
* Calculate = method that calculates and will have 3 parameters.
*/
double result = calculatorEngine.Calculate(operation, secondNumber, firstNumber);
Console.WriteLine(result);
}
catch (Exception ex)
{
// In real world we would want to log this message
//TODO: start logging exceptions
Console.WriteLine(ex.Message);
}
finally
{
Console.WriteLine("Do you want to continue: ");
answer = Console.ReadLine();
}
}while (answer == "yes");
}
static void Main(string[] args)
{
try
{
InputConverter inputConverter = new InputConverter();
CalculatorEngine calculatorEngine = new CalculatorEngine();
double firstNumber = inputConverter.ConvertInputToNumeric(Console.ReadLine());
double secondNumber = inputConverter.ConvertInputToNumeric(Console.ReadLine());
string operation = Console.ReadLine();
double result = calculatorEngine.Calculate(operation, firstNumber, secondNumber);
Console.WriteLine(result);
}
catch (Exception ex)
{
// TODO : log the exceptions
Console.WriteLine("Error {0}", ex.Message);
}
}