/*
 * ex0b.cc
 *
 *  Created on: Mar 20, 2018
 *      Author: mohammedja
 */
/*File: ex0b.cc
ex0b : programmer comments remover
//===========================================================================//
Written by: Ameer mohammed Jamal, id = 313331878, login = mohammedja

this program takes in a supposed "code" and removes all
the comments from it including comments such as those
that start with // or these that are / star star /

Input: file with text
Output: commentless code/text
**/
//===========================================================================//
#include <iostream>
#include <fstream>
#include <cctype>
#include <cstring>
#include <cstdlib>
#include <iomanip>
#include <string>
#include <stdio.h>
//===========================================================================//
// includes
using std::cin;
using std::cout;
using std::setw;
using std::ifstream;
using std::ofstream;
using std::getline;
//===========================================================================//
//constants
const int MAX_STR_LEN = 200;
//===========================================================================//
//prototypes
void filter_comment(char str[MAX_STR_LEN],int &counter_log,
		int &counter_comment);
//===========================================================================//
/*
 * the main functions run over every line from the input and then
 * it takes the line and puts it through filter which clears it out
 * and returns it .
 */
int main()
{

	int counter_log=0; // counter for star type comment
	int counter_comment=0; //counter for double slash comment
	char str[MAX_STR_LEN];
	while ( !cin.eof() ) //run on it till its end of file
	{
		cin.getline(str,MAX_STR_LEN); //take the line
		filter_comment(str,counter_log,counter_comment);

		if(!cin.eof()) //is it end of the file?
		{
			if((!counter_log)&&(counter_comment==0)) //print the /n
			{
				cout<<std::endl;
			}
			else if ( counter_comment==1)//ignoring the /n
			{
				counter_comment=0;
			}
		}
	}


	//the error message
	if(counter_log!=0)
	{
		std::cerr << "Error in input. Program ended in a comment. depth = "
				<<counter_log<<std::endl;
	}

}

//===========================================================================//
/*
 * this function checks when the double slash or star type comment is
 * and ignores everything behind it for printing and untill it stomps
 * till the end of it
 * in case of double slash ignore the whole line including /n
 * in case of star type comment wait till the closer but keep counting
 * inner ones
 */


void filter_comment(char str[],int &counter_log, int &counter_comment)
{
	int size =(int)strlen(str);

	for(int i =0; i<size;i++) //run on the line size
	{

		//avoid bad type case /*/ and */* are includes in both
		//first and second condition
		if((str[i]=='/')&&(str[i+1]=='*')&&(str[i-1]!='*'))
		{
			counter_log++;
		}
		else if((str[i-1]=='*')&&(str[i]=='/')&&(str[i-2]!='/'))
		{
			counter_log--;
		}
		//break if type double slash
		else if((str[i]=='/')&&(str[i+1]=='/'))
		{
			counter_comment=1;
			break;
		}
		else if(counter_log==0)
		{
			cout<<str[i];
		}
	}
}

//===========================================================================//