#include <iostream>
#include <string>
#include <fstream>
#include <map>
#include <string.h>
using namespace std;
char keywords[6][10] = {"if", "while", "int", "main", "for", "long"};
int isKeyword(char buffer[]) {
  for (int i = 0; i < 6; i++) {
    if (strcmp(keywords[i], buffer) == 0) {
      return true;
    }
  }
  return false;
}
map<int, string> synatxtable;
char operators[12] = "{}()+-*%=";
int compare() {
  int counter = 0;
  char buffer[10];
  int next = 0;
  int lineerror = -1;
  bool flag = false;
  ifstream reads("testfile.txt");
  while (!reads.eof()) { // keep looping untill the end of the file is reached.
    char buff = reads.get();
    for (int i = 0; i < 12; ++i) { // tests the charecters for operators
      if (buff == operators[i]) {
        cout << buff << " Is an operator " << endl;
        continue;
      }
    }
    if (buff == '/') {
      buff = reads.get();
      if (buff == '/') {
        while (true) { // if a / is followed by another dash then keep looping
                       // untill we get to the end of the line
                       // (/n) is acharecter that indicates a new line)
          buff = reads.get();
          if (buff == '\n') {
            cout << "Single line is Comment removed" << endl;
            break;
          }
        }
      } else if (buff == '*') {
        while (true) {
          buff = reads.get();
          if (buff == '/') {
            cout << "Multiple line is Comment removed" << endl;
            break;
          }
        }
      } else {
        cout << '/' << " Is an operator " << endl;
      }
    }
    if (isalnum(buff)) { // if
      buffer[next++] = buff;
    } else if (next && (buff == ',' || buff == ' ' || buff == '\n')) {
      buffer[next] = '\0';
      next = 0;
      if (isKeyword(buffer) == 1)
        cout << buffer << " is a keyword" << endl;
      else {
        cout << buffer << " is an indentifier" << endl;
        synatxtable[counter++] = buffer;
      }
    }
  }
}

int main() {
  compare();
  cout << "____________" << endl;
  for (auto i : synatxtable) {
    cout << "Identifier :" << i.first << " ID:" << i.second << endl;
  }
  cout << "____________" << endl;
}