/* gradepretty - Calculate student grades based on partial scores

* The program will prompt for student grades until EOF is entered

* The final grade is 30% programs, 50% tests and 20% homework

* Grades are assigned based on the following scale:

*    >0.90 4.0
*    >0.80 3.0
*    >0.70 2.0
*    <0.60 0.0

*  Written by: C. Severance - Tue Dec  7 17:40:05 EST 1993 */

#include <iostream.h>

main () {

  float pper,tper,hper,percent,totper,aveper,gpa,totgpa,avegpa;
  int student,count;

/* Initialization and headings */

  totper = 0;
  totgpa=0;
  count = 0;
  cout << "Grade program - written by Charles Severance\n";

/* Read the three percentages.  Note that data is expected from */
/* a file so there is no prompt. */

  cout.setf(ios::fixed,ios::floatfield);

  while(1) {
    cin >> student >> pper >> tper >> hper;

    if ( cin.eof() ) break;

    count = count + 1;

    percent = pper * 0.30 + tper * 0.50 + hper * 0.20;
    totper = totper + percent;

/* Determine the final grade and add it to the running total for GPA */

    gpa = 0.0;
    if ( percent >= 0.90 ) {
      gpa = 4.0;
    } else if ( percent >= 0.80 ) {
      gpa = 3.0;
    } else if ( percent >= 0.70 ) {
      gpa = 2.0;
    }

    totgpa = totgpa + gpa;

/* Print out the student information */

    cout.width(7);
    cout << student << "   ";
    cout.width(10);cout.precision(2);
    cout << pper << "   ";
    cout.width(10);cout.precision(2);
    cout << tper << "   ";
    cout.width(10);cout.precision(2);
    cout << hper << "   ";
    cout.width(5);cout.precision(1);
    cout << gpa << "\n";

  } /* End while */

/* Calculate the averages */

  if ( count  == 0 ) {
    avegpa = 0.0;
    aveper = 0.0;
  } else {
    avegpa = totgpa/count;
    aveper = totper/count;
  }

/* Print them out */

  cout << "Average                             ";
  cout.width(10);cout.precision(2);
  cout << aveper << "   ";
  cout.width(5);cout.precision(1);
  cout << avegpa << "\n";
}