// Program shell3 prompts for and reads a one-digit number.
// Values between 0 and the digit (inclusive) are summed.

#include <iostream>
using namespace std;

int main ()
{
    int  counter;	// loop-control variable
    int  sum;		// running sum
    int  digit;

    cout  << "Enter a one-digit number; press return."
          << endl;
    cin  >> digit;
    counter =  /* TO BE FILLED IN */                          
    sum  =     /* TO BE FILLED IN */                          

    while /* TO BE FILLED IN  */
    {
      /*  TO BE FILLED IN */

    }
    cout  << "Sum of digits between 0 and "
	  << digit  << " is "  << sum  << endl;
    return 0;
}