#include "student.h"
#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

void readAllStudents(ifstream&, student[], int&);
void calcAllAverages(student[], int);
void assignAllGrades(student[], int);
void sort(student[], int);
void writeAllStudents(student[], int);

int main() 
{
	const int MAX_STU = 100;

	student cis67[MAX_STU];
    int size;

     ifstream ins;
	 ins.open("stuFile.txt");
	 if (ins.fail())
	 {
		 cout << "error - file open"<< endl;
		 return EXIT_FAILURE;
	 }
	 readAllStudents(ins, cis67, size);
	 //calcAllAverages(cis67, size);
	 //assignAllGrades(cis67, size);
	 sort(cis67, size);
	 writeAllStudents(cis67, size);
	 
	 return 0;
}

void readAllStudents(ifstream& ins,  student cis67[],
				int& size)
{   student temp;  // input
   size = 0;
   temp.readStudent(ins);
   while (!ins.eof())
   {
	   cis67[size] = temp;
	   size++;
	   temp.readStudent(ins);
   }

}  					

void writeAllStudents(student cis67[],
				int size)
{  

   for (int i = 0; i < size; i++)
   {
	   cis67[i].writeStudent() ;
   }

}  					
				
				;
void calcAllAverages(student cis67[],
				int size)
{
   for (int i = 0; i < size; i++)
   {
	   cis67[i].calcAverage() ;
   }

}
void assignAllGrades(student cis67[],
				int size)
{
   for (int i = 0; i < size; i++)
   {
	   cis67[i].assignGrade() ;
   }

}

void sort(student cis67[], int size)
{
	for (int fill = 0; fill < size-1; fill++)
	{
		student temp;
		int smallIndex = fill;
		for (int j = fill+1; j < size; j++) 
		{
			if (cis67[j].getName() < cis67[smallIndex].getName())
				smallIndex = j;
		}

		// assert: smallIndex is position
		//   next smallest - swap values
		temp = cis67[fill];
		cis67[fill] = cis67[smallIndex];
		cis67[smallIndex] = temp;
	}
}