// Program Count2 prompts for, reads, and sums integer
// values until a negative number is read.  The input
// values and the sum are printed.

#include <iostream>
using namespace std;


int main ()
{
    int  sum;		// summing variable
    int  dataValue;	// input value 
    sum = 0;

    cout  << "To stop processing, enter a negative"
          << " value."  << endl;
    cout  << " Enter an integer value; press return."  
          << endl;
    // Read first data value to prepare for loop. 
    cin  >> dataValue;

    // Input and sum integer data values 
    while (dataValue > 0)                                   
    {                                                  
        sum = sum + dataValue;
        cout  << "Enter an integer value; press return."  
              << endl;
        cin  >> dataValue;
    }
    cout  << "Sum is "  << sum  << endl;
    return 0;
}