#include <iostream>
#include <exception>

#include "PromptModule.h"
#include "ErrorHandlingModule.h"

using namespace std;

char GetOperator(void) //Returns dividend, a float
{
	char Operator = 0;
	
	cout << "Operator: ";
	cin >> Operator;
	
	return Operator;
}

float GetOperand(void)
{
	float Operand = 1;
	
	cout << "Operand: ";
	cin >> Operand;
	
	return Operand;
}

float Accumulate(const char theOperator, const float theOperand)
{
	static float myAccumulator = 0; //Initialized to 0 when program starts
	
	switch (theOperator) {
		case '+': myAccumulator = myAccumulator + theOperand; break;
		case '-': myAccumulator = myAccumulator - theOperand; break;
		case '*': myAccumulator = myAccumulator * theOperand; break;
		case '/': myAccumulator = myAccumulator / theOperand; break;
		default: 
			throw
			runtime_error
			("Error - Invalid operator");
			break;
	};
	
	return myAccumulator;
}

int main(int argc, char* argv[])
{
	SAMSErrorHandling::Initialize();
	
	do
	{
		try
		{
			char Operator = GetOperator();
			float Operand = GetOperand();
			
			cout << Accumulate(Operator, Operand) << endl;
		}
		catch (runtime_error RuntimeError)
		{
			SAMSErrorHandling::HandleRuntimeError(RuntimeError);
		}
		catch (...)
		{
			SAMSErrorHandling::HandleNotANumberError();
		};
	}
	while (SAMSPrompt::UserWantsToContinueYOrN("More? "));
	
	return 0;
}