#include <iostream>
#include <fstream>

using namespace std;

int  main (  )
{
     int         patientCount;       // declarations
     int         thisID;
     int         howMany;
     int         thisBP;
     int         totalForPatient;
     int         count;
     float       average;

     ifstream  myInfile;
     myInfile.open("A:\\BP.dat");

     if  (!myInfile )        // opening failed
     {
             cout << "File opening error. Program terminated.";
             return  1;
     }

     cout << "ID Number      Average BP" << endl;
     patientCount = 0;

     myInfile >> thisID >> howMany;         // priming read
     while ( myInfile )            // last read successful
     {
        patientCount++;
        cout << thisID;
        totalForPatient = 0;             // initialize inner loop
        count = 0;
        while ( count < howMany)
        {
            myInfile >> thisBP;
            count ++;
            totalForPatient = totalForPatient  + thisBP;
        }

        average = totalForPatient / float(howMany);
        cout  <<  int (average + .5) << endl;             // round
        myInfile  >> thisID  >>  howMany;    // another read
     }
     cout   <<   "There were " <<   patientCount
            <<   "patients on file." << endl;

     cout  <<   "Program terminated.\n";

     return 0;

}