//p6.cxx
//************************************************************************************
//AUTHOR:Aaron Sopfe
//
//COUSE TITLE: Programming 1
//
//COUSE NUMBER: CS116
//
//PROF NAME: Moe Bidgoli
//
//ASSIGMENT NUMBER #6
//
//DUE DATE OCT-17-2011
//
//POSSIBLE POINTS ? Points
//
//PURPOSE
//
//      This program uses an input file to collect name, id, and three exam scores
//      (exam1, exam2, exam3) in to an output file, it checks to make sure the student
//      ID, and exams are in set define range and will display an error if the value(s)
//      are not in the range. The program also averages the exam grades and does another
//      check to make sure the average does not supass 100 or under 0. The final part of
//      the program will display pass or fail if the average is above or below 70.
//      This program uses a loop so more then one record can be processed in a single
//      running of the program.
//
//**********************************************************************************

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

using namespace std;

const float MAXE = 100.00; //max exam score
const float MINE = 0.00;  //min exam score
const int MAXID = 9999; //max studId
const int MINID = 1111; //min studId
const float EXMIN = 70.00; //min passing exam
float sumexam; //sums of exams
float perPass; // percent passed with avgerage of 70 or more
float perFail; // percent failed wtih averge less then 70
int main()
{
	ofstream outFile;
	ifstream inFile;

    outFile.open("out.data");
    inFile.open("in.data");

    outFile.setf(ios::fixed);
    outFile.precision(2);

    string studName, pass, fail, inv, work; // inv = invalid work = either pass, fail, or inv
    int studId; //student id
    float exam1, exam2, exam3, avg, mavg; //mavg == class mean avg, avg = average
    int invRd = 0; //invalid record
    int validRd = 0; //Valid record
    int noPass = 0; //number of passing
    int noFail = 0; //Number of failing
    //float perpass; //percent pass
    //float perfail; //percent fail

    pass = "PASSED";
    fail = "FAILED";
    inv = "~ INVALID DATA ~";

     outFile << "~~ < Student Exam Report > ~~" << endl;
     outFile << "Student ID:" << setw(11) << "Name" << setw(11) << "Exam 1" << setw(11) << "Exam 2" << setw(11)
     << "Exam 3" << setw(11) << "Average" << setw(20) << "Passed/Failed" << endl;
     outFile << "-----------" << setw(11) << "----" << setw(11) << "------" << setw(11) << "------" << setw(11)
     << "------" << setw(11) << "-------" << setw(20) << "-------------" << endl;

     inFile >> studName >> studId >> exam1 >> exam2 >> exam3;

     while(inFile)
     {
         avg = ( exam1 + exam2 + exam3 )/3;


        if( avg >= MINE && avg <= MAXE && exam1 >= MINE && exam1 <= MAXE && exam2 >= MINE && exam2 <= MAXE
        && exam3 >= MINE && exam3 <= MAXE && studId >= MINID && studId <= MAXID )
                //then
        {
                    sumexam = sumexam + avg;
                    validRd = validRd + 1;

                    outFile << studId << setw(11) << studName << setw(11) << exam1 << setw(11) << exam2 <<
                    setw(11) << exam3 << setw(11);

                    if( avg >= EXMIN && avg <= MAXE)
                    //then
                    {
                      noPass = noPass + 1;
                        outFile << avg << setw(20) <<pass << endl;
                    }

                    else if( avg < EXMIN )
                     {

                       //then
                        noFail = noFail + 1;
                        outFile << avg << setw(20) << fail << endl;
                     }

        }
          else
          {

            invRd = invRd + 1;

            outFile << studId << setw(11) << studName << setw(11) << exam1 << setw(11) << exam2
            << setw(11) << exam3 << setw(11) << inv << setw(20) << " " << endl;
          }

     inFile >> studName >> studId >> exam1 >> exam2 >> exam3;

     }
     if (validRd != 0)
        //then
     {

            perPass = (noPass / validRd) * 100;
            perFail = (noFail / validRd) * 100;
            mavg = (sumexam / validRd);
            outFile << endl <<"Mean AVG of exams = " << mavg << endl << endl;
            outFile << "Invalid data: " << invRd << endl;
            outFile << "Valid data: " << validRd << endl << endl;
            outFile << "% Passed " << perPass << endl;
            outFile << "% Failed " << perFail << endl;
            outFile << "*< end >*" << endl;
     }

     else
      {
          outFile << "Error: Can not divide by zero" << endl;
      }

    inFile.close();
    outFile.close();

    return 0;
}


//in.data 

Lewis,Rose   1111        75.00  80      70
Weber,Mark  7821  70         69          69
Runer,Jon     9102  88         88.00     91
Sooner,Ali     8888  -1          0           100