//Average of passing grades
#include <iostream>
using namespace std;
main()
{ int grade, total=0, count=0, num;
  for(num=0; num<20; num++)
  {  cout<<"Enter grade:";
     cin>>grade;
     if (grade >=60)
     {  total=total+grade;
	    count=count+1;
     } //passing
  } //for loop
  if (count>0)
    cout<<"Average passing grade is "<<total/count<<"\n";
  return 0;
} //main