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

GetIdNum();
double GetGrades(double grd1, double grd2, double grd3, double grd4);
IsaSentinel();
double CalcGPA(double grd1, double grd2, double grd3, double grd4);
double CalcAvg(double course1, double course2, double course3, double course4);
PrintHeadings();
PrintIdNum();
PrintGrades();
PrintMessage();
PrintGPA();


void main()
{
	double g1, g2, g3, g4, gpa;
	int id;

	ifstream infile("a:\\ftin.txt");
	ofstream outfile("a:\\ftout.txt");

	
	GetIdNum();
	while(id != 0)
	{
	//infile>>id;
	cout<<id<<endl;
	infile>>setprecision(3)>>setiosflags(ios::fixed | ios::showpoint)>>g1>>g2>>g3>>g4;
	gpa = CalcGPA(g1,g2,g3,g4);
//	cout<<setprecision(3)<<setiosflags(ios::fixed | ios::showpoint)<<g1<<g2<<g3<<g4<<endl;
	cout<<setprecision(3)<<setiosflags(ios::fixed | ios::showpoint)<<gpa<<endl;
//	outfile<<id<<g1<<g2<<g3<<g4<<endl;
	GetIdNum();
	}
	IsaSentinel();






	infile.close();
	outfile.close();

	return;
}



GetIdNum()
{
	int idnum;
	ifstream infile("a:\\ftin.txt");
	infile>>idnum;
	//cout<<idnum<<endl;
	return;
	infile.close();

}

IsaSentinel()

{
	cout<<"Not Data to Process";
	return 0;
}

double CalcGPA(double grd1, double grd2, double grd3, double grd4)
{
	double gpaAns;
	gpaAns = (grd1 + grd2 + grd3 + grd4)/4;
	return gpaAns;
}