CPS 171 Machine Problem 4

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
#include <string>
#include <fstream>
#include <wctype.h>
using namespace std;

//had already completed this with out adding functions - and so i added two of the examples to show that i understand how the functions work

char digit;
char prevdigit;
char prevprevdigit = ' ';
float firstnumber = 0;
string firststring;
float secondnumber = 0;
string secondstring;
float currentnumber = 0;
string currentstring;
float answer;
int switchstatement = 0;
char op;




string reinsist(int newanswer) {
	string finalromannumber;
	int final = newanswer;

	while (final > 0) {
		while (final > 1000) {
			final = final - 1000;
			finalromannumber += 'M';
		}
		while (final > 500) {
			final = final - 500;
			finalromannumber += 'C';
		}
		while (final > 100) {
			final = final - 100;
			finalromannumber += 'D';
		}
		while (final > 50) {
			final = final - 50;
			finalromannumber += 'L';
		}
		while (final > 10) {
			final = final - 10;
			finalromannumber += 'X';
		}
		while (final > 5) {
			final = final - 5;
			finalromannumber += 'V';
		}
		while (final >= 1) {
			final = final - 1;
			finalromannumber += 'I';
		}
	}
	return finalromannumber;
}



void resetcurrent() {
	currentstring = "";
	currentnumber = 0;
}
void addsomethingfirst(int a) {
	firstnumber += a;
}
void resetall() {
	switchstatement = 0;
	currentnumber = 0;
	secondnumber = 0;
	firstnumber = 0;
	firststring = "";
	secondstring = "";
	currentstring = "";
	answer = 0;
}

int main()
{
	ifstream fileInput;  //here we are going to define the file that we are trying to stream
	fileInput.open("c:\\temp\\mp4romanletrdata.txt");

	while (!fileInput.eof())
	{
		fileInput >> std::noskipws >> digit;
		//cout << digit << endl;
		if (digit == 'I') {
			currentnumber = currentnumber + 1; currentstring += digit;
		}
		if (digit == 'V') {
			currentnumber = currentnumber + 5; currentstring += digit;
		}
		if (digit == 'X') {
			currentnumber = currentnumber + 10; currentstring += digit;
		}
		if (digit == 'L') {
			currentnumber = currentnumber + 50; currentstring += digit;
		}
		if (digit == 'C') {
			currentnumber = currentnumber + 100; currentstring += digit;
		}
		if (digit == 'D') {
			currentnumber = currentnumber + 500; currentstring += digit;
		}
		if (digit == 'M') {
			currentnumber = currentnumber + 1000; currentstring += digit;
		}

		if (digit == (char)' ' && prevdigit != (char)' ' && switchstatement == 0) {
			addsomethingfirst(currentnumber); // this is my example of a return function
			firststring = currentstring;
			resetcurrent(); //  this is my void function
			switchstatement = 1;
		}
		else
			if (digit == (char)' ' && prevdigit != (char)' ' && switchstatement == 1) {
				secondnumber += currentnumber;
				secondstring = currentstring;
				resetcurrent();
				switchstatement = 2;
			}
		if (digit == (char)'\n' && switchstatement == 2) {
			switchstatement = 0;
			op = prevdigit;
			if (op == '+') { answer = firstnumber + secondnumber; }
			if (op == '-') { answer = firstnumber - secondnumber; }
			if (op == '*') { answer = firstnumber * secondnumber; }
			if (op == '/') { answer = firstnumber / secondnumber; }
			cout << firstnumber << op << secondnumber << "=" << answer << endl;
			cout << "The first number is: " << firststring << "(" << firstnumber << ")" << endl;
			cout << "The second number is: " << secondstring << "(" << secondnumber << ")" << endl;
			cout << "The answer is: " << answer << endl;
			cout << endl << "Answer In Roman Numerals : " << "<" <<  reinsist(answer) << ">" <<  endl;
			cout << "----------------------------------------" << endl;
			resetall();
		}
		prevdigit = digit;
		prevprevdigit = prevdigit;
	}
	system("pause");
	return 0;
}