// Zeinalipour-Yazti Demetrios
// csyiazti
// cs10xx -
// Lab Sec#24
// lab10
	/*	Working with Arrays
	 */

#include <math.h>
#include <fstream>
#include <iostream>
#include <iomanip>

#include <string>
using namespace std;

/* the number of stars found in the ratings.txt file*/
const int STARSIZE = 5;

/* this procedure reads the file from disk and counts the number
 * of occurence of each "star pattern" 
 */
void readData(int occurence[])
{
	
	string filename;
	string line;	

	while (true)
	{ 
      /* get the filename */
	  cout << "Give me the name of the file: " ;
	  cin >> filename;	 

	  cout << "\nOpening \'" << filename << "\'...";

	  /* open file for input */
	  ifstream infilestream;
	  infilestream.open(filename.c_str(), ios::in);
	
	  if (infilestream) /* overload ! operator*/
	  {
 		cout << "done\n";
		while (!infilestream.eof())
		{ infilestream >> line; 		  
		  occurence[line.length()-1]++;		  
		}	
		break;
	  }
	  else
	  {
		  cout << "failed\n";
		  cerr << "File could not be opened\n" << endl;	 
		  infilestream.close();		  
	  }
	}
}


/* initialize the occurence array */
void initArray(int occurence[])
{

	for (int i=0; i< STARSIZE; i++)
	{
		occurence[i] = 0;
	}

}


/* output the result */
void printResults(int occurence[])
{
	const int COLSPAN = STARSIZE + 3;

	/* Print Header */
	cout << "Rating" << " Count \n";

	/* Print result and count */
	for (int i=0; i< STARSIZE; i++)
	{		
		for (int j=0; j<i+1 ; j++)
		{
			cout << "*";
		}
		cout << setw(COLSPAN - j);
		cout << occurence[i] << endl;			
	}

}



void main()
{	
	/* define variables */
	int occurence[STARSIZE];  /* An array of integers where each integer represents the number of 
								occurence of an i length string */ 

	/* initialize the array's values to 0 */
	void initArray(int occurence[]);
	
	/* define functions & procedures*/
	void readData(int occurence[]);
	
	/* print intro */
	cout << "Lab 10 - Working with Arrays.\n"
		 << "by Demetris Zeinalipour : cs10 #24.\n\n"
		 << "NOTE:Download \'ratings.txt\' and place it to same directory as this executable!!\n\n";
		 
	
	/* initialize the occurence array */
	initArray(occurence);

	/* get Values from the file */	
	readData(occurence);

	
	/* Printing out the result table */
	printResults(occurence);	
		  

}