// *****************************************************************
// Author:	Zhixiang Chen
// Class:	CSCI/CMPE 1170, Spring 2009
// Lab 19:	Array parametrs to functions
//			and file processing
// Date:	January 12, 2009
// Comment: The code here is meant to be revised.
//
//-----------------------------------------------------------------
//
// This lab exercise is to show how array parameters to functions work and 
// how to process a file. The work is as follows: Write a program to statistical 
// information of all letters occurred in file "lab_19_data.txt", that is, frequencies of 
// letters in this file.
//
//
// Compile and run your program. When everything is fine,
// print your .cpp file and turn it to me or the TA.
// *****************************************************************

#include < iostream >
#include <fstream >
#include < string >
#include < cstring >
#include < cmath> 
#include <cstdlib>
#include <iomanip>

#include "lab_19_head.h" 

using namespace std; 

int main( )
{
	//define a const array size
	const int SIZE = 26;				

	//array declaration
	int stats[SIZE];					//letter stat array
	
	//file var
	ifstream inFile;						//input file

	int i;									//loop var

	//open file
	inFile.open("lab_19_data.txt"); 
	if(!inFile)
	{
		cout<<"Fail to open lab_19_data.txt, and stop ."<<endl;
		return 1; 
	}

	//initialize array letterStata
	for (i=0; i<SIZE; i++)
		stats[i] = 0; 

	//call function get letter stats in the file
	getStats(stats, inFile, SIZE); 
	
	//close the file
	inFile.close(); 

	//call function showStats to display the results
	showStats(stats, SIZE); 

	

	//well done and exit
	return 0; 
}