/* Prompt user for positive integers and display the count, maximum,
   minimum and average. Terminate the input with -1 (StatNumbers.cpp) */
#include <iostream>
#include <climits>  // for INT_MAX
#include <iomanip>  // for setprecision(n)
using namespace std;

int main() {
   int numberIn;      // input number (positive integer)
   int count = 0;     // count of inputs, init to 0
   int sum = 0;       // sum of inputs, init to 0
   int max = 0;       // max of inputs, init to minimum
   int min = INT_MAX; // min of inputs, init to maximum (need <climits>)
   int sentinel = -1; // Input terminating value

   // Read Inputs until sentinel encountered
   cout << "Enter a positive integer or " << sentinel << " to exit: ";
   while (cin >> numberIn && numberIn != sentinel) {
      // Check input for positive integer
      if (numberIn > 0) {
         ++count;
         sum += numberIn;
         if (max < numberIn) max = numberIn;
         if (min > numberIn) min = numberIn;
      } else {
         cout << "error: input must be positive! try again..." << endl;
      }
      cout << "Enter a positive integer or " << sentinel << " to exit: ";
   }

   // Print result
   cout << endl;
   cout << "Count is " << count << endl;
   if (count > 0) {
      cout << "Maximum is " << max << endl;
      cout << "Minimum is " << min << endl;
      cout << fixed << setprecision(2);
       // print floating point to 2 decimal places (need <iomanip>)
      cout << "Average is " << (double)sum / count << endl;
   }
}