/**
 * Assignment #6
 * Program to process grades.
 * Author: Mark Allen Weiss
 * SSN: 000-00-0000
 * Course: COP-2210 Section 8
 * Date: October 28, 1998
 *
 * CERTIFICATION OF SOLE AUTHORSHIP
 * I certify that this work is solely my own and
 * that none if it is the work of any other person.
 * I further certify that I have not provided any
 * assistance to other students enrolled in COP-2210 that
 * would render their CERTIFICATION OF SOLE AUTHORSHIP
 * invalid. I understand that violations of this pledge
 * may result in severe sanctions.
 *
 *
 *
 * -----------------------------------
 *   (Mark Allen Weiss)       <--- Put your name here, and sign above
 */
#include <iostream.h>
#include <fstream.h>
#include "apstring.h"

void OpenInput( apstring & infile, ifstream & fin );
void OpenOutput( apstring infile, apstring outfile, ofstream & fout );
void ProcessFile( istream & fin, ostream & fout );

int main( )
{
    apstring infile;  // Input file name
    apstring outfile; // Output file name
    ifstream fin;     // Input file stream
    ofstream fout;    // Output file stream

    OpenInput( infile, fin );
    OpenOutput( infile, outfile, fout );
    ProcessFile( fin, fout );

    return 0;
}


/**
 * Usual stuff; you should copy this.
 */
void OpenInput( apstring & infile, ifstream & fin )
{
    for( ; ; )
    {
        cout << "Enter the input file name: ";
        cin >> infile;
        fin.open( infile.c_str( ), ios::in | ios::nocreate );
        if( !fin )
        {
           cout << "Bad file." << endl;
           fin.clear( );
        }
        else
           break;
    }
}


/**
 * Usual stuff. This routine also checks to
 * make sure that outfile is different from infile.
 * To avoid this test, call it with infile equal to "".
 */
void OpenOutput( apstring infile, apstring outfile, ofstream & fout )
{
    for( ; ; )
    {
        cout << "Enter the output file name: ";
        cin >> outfile;
        if( infile == outfile )
        {
            cout << "Input and output files are identical!!" << endl;
            continue;
        }
        fout.open( outfile.c_str( ) );
        if( !fout )
        {
           cout << "Bad file." << endl;
           fout.clear( );
        }
        else
           break;
    }
}


/**
 * Compute the grades.
 * Pre: fin and fout are open and ready for reading or writing, respectively.
 */
void ProcessFile( istream & fin, ostream & fout )
{
    apstring Name, FirstName, LastName;
    int Grade1, Grade2, Grade3;
    double Average;
    char CourseGrade;
    int As, Bs, Cs, Ds, Fs;

    As = Bs = Cs = Ds = Fs = 0;

    while( fin >> LastName >> FirstName >> Grade1 >> Grade2 >> Grade3 )
    {
        Average = Grade1 * 0.25 + Grade2 * 0.30 + Grade3 * 0.45;

        if( Average >= 90.0 )
        {
            CourseGrade = 'A';
            As++;
        }
        else if( Average >= 80.0 )
        {
            CourseGrade = 'B';
            Bs++;
        }
        else if( Average >= 70.0 )
        {
            CourseGrade = 'C';
            Cs++;
        }
        else if( Average >= 60.0 )
        {
            CourseGrade = 'D';
            Ds++;
        }
        else
        {
            CourseGrade = 'F';
            Fs++;
        }

        cout << LastName << " " << FirstName << " " << CourseGrade << endl;
        fout << LastName << " " << FirstName << " " << Grade1 << " "
             << Grade2 << " " << Grade3 << " " << Average << " "
             << CourseGrade << endl;
    }
      // Write out grade distribution
    fout << "A " << As << endl;
    fout << "B " << Bs << endl;
    fout << "C " << Cs << endl;
    fout << "D " << Ds << endl;
    fout << "F " << Fs << endl;
}