// Rot-X.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <string>
#include <cctype>
#include <stdlib.h>
#include <algorithm> 
using namespace std;

string strlower(string s) {
	//string hello = "Hello World";
	//std::transform(hello.begin(), hello.end(), hello.begin(), (int(*)(int))std::tolower);
	std::transform(s.begin(), s.end(), s.begin(), (int(*)(int))std::tolower);
	return s;
}


/*FINISHED*/
/*This version of rot requires the number to rot by*/
string rot(int rotNum, string theString) {
	if (rotNum == 0) 
		{ return theString; }
	theString = strlower(theString); //string to lowercase
	int theStringLen = theString.length();
	int asciiValue = 0;
	int wrapAdd = 0;
	for (int loopNum = 0; loopNum < theStringLen; ++loopNum) {
		asciiValue = theString[loopNum] + rotNum;
		if (asciiValue > 122) {
			wrapAdd = asciiValue - 122;
			asciiValue = 96 + wrapAdd;
		}
		
		theString[loopNum] = char (asciiValue);
		asciiValue = 0;
		wrapAdd = 0;
	}
	return theString;
}

/*This version of rot prints a table for each rot*/
void rotTbl(string theString) {
	cout << "Cipher\t|\tResult\n";
	cout << "------\t|\t------\n";
	string originalString = theString;
	for (int loopNum = 0; loopNum < 26; ++loopNum) {
		theString = originalString;
		cout << "Rot-" << loopNum << "\t|\t" << rot(loopNum, theString) << "\n";
	}
}

int _tmain(int argc, _TCHAR* argv[])
{
	string awesomeString;
	cout << 
		"ROT-X VERSION 1.0\n" <<
		"By Tommy Boyt\n" << 
		"Not distributed under any sort of license yet...\n" <<
		"Input the number to be put through the rotational cipher: ";
	cin >> awesomeString;
	rotTbl(awesomeString);
	system("pause");
}