private string DetermineOperationToPerform(string input, int number)
{
if (input == "s")
{
return(OperationFromOneToN.Sum(number));
}
return(OperationFromOneToN.Product(number));
}
public string Play()
{
Console.WriteLine("Pick a number, any number and I will sum all the numbers from 1 to N!");
var inputNumber = Console.ReadLine();
if (UserInputValidation.NumberNegativeOrInvalid(inputNumber))
{
Console.WriteLine("Please enter a positive number, try again:");
Play();
}
return(OperationFromOneToN.Sum(int.Parse(inputNumber)));
}
