MY STUD.H
________________

#include <fstream>
#include <iostream>
#include <iomanip>

using namespace std;

struct StudRd
{
 int id;
 float exam1;
 float exam2;
 float exam3;
 float avg;
};
void ReadRd(ifstream& inFile, StudRd& rd);
void WriteRd(ofstream& outFile, StudRd rd);
void findAvg(StudRd& rd);



MY STUD.CXX
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#include "stud.h"

void ReadRd(ifstream& inFile, StudRd& rd)
{
   inFile >> rd.id >> rd.exam1 >> rd.exam2 >> rd.exam3;
}

void WriteRd(ofstream& outFile, StudRd rd)
{
   outfile << "id= "    << rd.id << endl;
   outFile << "exam1= " << ed.exam1 << endl;
   outFile << "exam2= " << ed.exam2 << endl;
   outFile << "exam3= " << ed.exam3 << endl;
   outFile.setf(ios::fixed);
   outFile.setf(ios::showpoint);
   outFile.precision(2);
   outFile << "Exams AVG= " << rd.avg << endl;
}
void find Avg(StudRd& rd)
{
   rd.avg = float(rd.exam1 + rd.exam2 + rd.exam3/(3);
}


RUNPROG1STUD.CXX (Client Code)
_____________________________
#include "stud.h"

int main()
{
  ifstream inFile;
  ofstream outFile;
  inFile.open("in.data");
  outFile.open("out.data");

  while (inFile)
  {
   StudRd rd;
   ReadRd(inFile, rd);
   findAvg(rd);
   WriteRd(outFile, rd);

  }
  outFile << "*** END ***" << endl;
 return 0;
}