public static OperationToDo GiveMeOperation(Operations operationType)
{
OperationToDo operationDone = null;
switch (operationType)
{
case Operations.add: operationDone += Program.add; break;
case Operations.sub: operationDone += Program.subtract; break;
case Operations.mul: operationDone += Program.multiply; break;
}
return(operationDone);
}
public static void Main(string[] args)
{
Console.WriteLine("Enter 2 numbers using format <number><space><number>:");
int[] numbers = Console.ReadLine().Split().Select(x => int.Parse(x)).ToArray();
Console.WriteLine("Enter operation to perform on numbers:");
Operations operation = (Operations)Enum.Parse(typeof(Operations), Console.ReadLine());
OperationToDo operationDone = OperationFactory.GiveMeOperation(operation);
//Below switch replaced by call to factory
//switch (operation)
//{
// case Operations.add: operationDone += add; break;
// case Operations.sub: operationDone += subtract; break;
// case Operations.mul: operationDone += multiply; break;
//}
Console.WriteLine("Operation result is: " + operationDone(numbers[0], numbers[1]));
}//main method
