// 
//  Introduction to while loops
//
//  Determine passing / failing grade
//

#include <iostream>
#include <iomanip>
using namespace std;

int main ()
{

// ---- Variables

int grade,   // grade to be input
    gradesum = 0,
    gradecount = 0,
    maxgrade,
    mingrade;

float avg;
 
// ---- Input

//cout << "\nEnter an integer grade --> ";
cin >> grade;
 maxgrade = grade;
 mingrade = grade;


// --- Processing Loop

while (grade >= 0)
{
  if (grade >= 60)
     cout << "\nGrade " << grade << " is passing \n ";
  else 
     cout << "\nGrade " << grade << " is failing \n ";
  
  gradesum += grade;
  gradecount ++;

  if (grade > maxgrade)
      maxgrade = grade;
  if (grade < min grade)
      mingrade = grade;

   //cout << "\nEnter your next integer grade (-1 to quit) --> ";
   cin >> grade;
}

avg = static_cast<float>(gradesum)/gradecount;

  cout << "\n\nNum of grades: " << gradecount;
  cout << "\n\nSum of grades: " << gradesum;
  cout << "\n\nMin grade    : " << mingrade;
  cout << "\n\nMax grade    : " << maxgrade;
  cout << "\n\nAvg of grades: " << avg;

cout << "\n\n";
return 0;

}