// *****************************************************************
// Author:	Zhixiang Chen
// Class:	CSCI 1380.01, Summer I, 2008
// *****************************************************************
// Author:	Zhixiang Chen
// Class:	CSCI 1380.01, Summer I, 2008
// Lab 31:	Vector class template, structures
// Date:	June 24, 2008
// Comment: The code here is meant to be revised.
//
//-----------------------------------------------------------------
// Lab Exercise 31: 
//
// This lab exercise is to show how to use the vector class template and practice more about 
// structures. The problem is to define a strucure type studentType to represent a students in class CSCI 1380
// and use the vector class template to create a vector of studentType to represent all students in the class. 
// 
// The structure studentType consists of the following members( or fields): 
// (1) studentFirstName, (2) studentLastName, (3) studentID, (4) a double array to 
// store value of attendance, hw1, hw2, hw3, hw4, hw5, hw6, quiz, test1, test2, test3, 
// (5) score for the class, and (6)  letter grade. 
//
// Once the studentTpye has been defined, we shall create a vector of studentType to represent all 
// students in the class. 
//
// The data is stored in file "lab_29_data.txt", and shall be loaded into the array.
//
// The formula to calculate the scores of attendance 5%, quiz 5%, homework 30%, tests 60%. 
// The grade is decided as follows: A if score >= 90, B if 80<= score <90, C if 70<= score < 80, 
// D if 60 <= score <70, and F otherwise.
//
// Compile and run your program. When everything is fine,
// print your .cpp file and turn it to me or Sergio
// *****************************************************************

#include < iostream >
#include <fstream >
#include < string >
#include < cstring >
#include < cmath> 
#include <cstdlib>
#include <iomanip>
#include <vector>					//include vector class template

//define a const array size
const int SIZE = 35;				//class size				
const int COLUMN = 11;				//column size

#include "lab_optional_4_head.h" 

using namespace std; 

int main( )
{
	//file var
	ifstream inFile;					//input file
	
	int i;								//loop var

	/********************************************************************************
	 Part A: Some practice about vector class template
	 *******************************************************************************/
	vector<int> cat;				//create an int vector cat with size 0
	vector<int> dog(5);				//creat a char vector dog with size 10
	vector<int> rat(5, 12);			//create a double vector of rat with size 5 and all elements are initialized to 12.55
	vector<int> bat(rat);			//create a double vector of bat, copying rat to bat for initialization

	//how to insert elements into vector, when the size zero
	for (i = 0; i<5; i++)
		cat.push_back(i+10);		//push_back(...) add a value to the end of the vector
	//treat an vector as an array when the size is known
	for (i = 0; i<dog.size(); i++)
	{
		dog[i]=cat[i]+11;
	}
	
	//another try
	for (i = 0; i<cat.size(); i++)
	{
		cout<<"cat["<<i<<"] is " <<cat[i] <<"  "
			<<"dog["<<i<<"] is " <<dog.at(i) <<"  "
			<<"rat["<<i<<"] is " <<rat[i] <<"  "
			<<"bat["<<i<<"] is " <<bat.at(i)<<"  "
			<<endl; 
	}
		
	
	/*******************************************************************************************
	 Part B: Apply vector class template to solve the CSCI 1380 class info processing problem.
	 *******************************************************************************************/

	//create a vector object of studentType for class CSCI 1380
	vector<studentType> csci1380(SIZE);		//a studentType vector object of size SIZE 

	

	//open file
	inFile.open("lab_29_data.txt"); 
	if(!inFile)
	{
		cout<<"Fail to open lab_28_data.txt, and stop ."<<endl;
		return 1; 
	}

	//initialize vector csci1380
	loadData(inFile, csci1380, SIZE, COLUMN);

	//close inFile
	inFile.close(); 

	//compute score and grades
	grading(csci1380, SIZE, COLUMN); 

	//show grades
	showGrades(csci1380, SIZE, COLUMN); 
	
	//well done and exit
	return 0; 
}