// syrykh_4.cpp : Этот файл содержит функцию "main". Здесь начинается и заканчивается выполнение программы.
// split

#include "pch.h"
#include <fstream>
#include <iostream>
#include <string>
#include <sstream>
using namespace std;

bool operationMark(string str)
{
	return (str == ">=" || str == "<=" || str == "==" || str == "<" || str == ">" || str == "!=");
}

bool checkVariableIdentifcator(string str)
{
	ifstream resFile;
	resFile.open("C:\\onlyformydoggers\\more than words.txt");

	string tempStr="";
	bool checkConst = true, isVar = true;
	if (str[0] >= 48 && str[0] <= 57)
	{
		for (int i = 0; i < str.length() && checkConst; i++)
			if (!(str[i] <= 57 && str[i] >= 48)) checkConst = false;
		if (checkConst) return true;
		else return false;
	}

	while (!resFile.eof()&& isVar)
	{
			resFile >> tempStr;
			if (str == tempStr) isVar = false;
	}
	for (int i = 0; i < str.length()&& isVar; i++)
		if (str[i] >= 58 && str[i] <= 64 || str[i] >= 0 && str[i] <= 47 || str[i] >= 91 && str[i] <= 96 || str[i] >= 123) isVar = false;

	resFile.close();
	return isVar;
}


enum states {START, IDENTIFICATOR, OPERATION_MARK, SUCCESS, SKIP};

int main()
{
	ifstream resourceFile,workFile;
	string str = "", word="";
	bool success = false, globalSuccess = true;
	workFile.open("C:\\onlyformydoggers\\conditional strings.txt");
	states state = START;
	while (!workFile.eof())
	{
		getline(workFile, str);
		istringstream streamStr(str);
		globalSuccess = true;
		state = START;
		for (int j = 0; j < 3 && globalSuccess; j++)
		{
			success = false;
			streamStr >> word;
			while(!success && globalSuccess)
			{
				switch (state)
				{
				case START:
					if (word[0] == '<' || word[0] == '>' || word[0] == '!' || word[0] == '=') state = OPERATION_MARK;
					else state = IDENTIFICATOR;
					break;
				case IDENTIFICATOR:
					if (checkVariableIdentifcator(word))  state = SUCCESS;
									else state = SKIP;
					break;
				case OPERATION_MARK: if (operationMark(word)) state = SUCCESS;
									 else state = SKIP;
					break;
				case SKIP: globalSuccess = false;
					break;
				case SUCCESS: success = true;
					break;
				}
			}
		}
		if (globalSuccess) cout << str << '\n';
	}
	workFile.close();
	return 0;
}