#include <iostream.h>
#include <strstream.h>
#include "CPstring.h"

// file: sales.cc
// author      Dietolf Ramm;  date: 11/13/96
// Process sales ticket with last name followed by variable number of numbers
// Illustrate using string streams

double Summary(string & ticket)
// precondition: ticket contains one name followed by one or more numbers
// postcondition: name, number of numbers and sum of numbers is printed
{
   int numsales = 0;
   istrstream indata(ticket);
   string name;
   double sale, sales = 0.0;

   indata >> name;
   while (indata >> sale)
   {
      sales += sale;
      numsales++;
   }
   cout << name << " sold " << numsales << " items worth " << sales << endl;
   return sales;
}

int main()
{
   string ticket;
   double total = 0.0;
   cout.setf(ios::fixed);
   cout.setf(ios::showpoint);
   cout.precision(2);

   cout << "Type sale info (enter to quit)"  << endl;

   getline(cin, ticket);
   while (ticket.length() > 0)
   {
      total += Summary(ticket);
      cout << "Type sale info (enter to quit)"  << endl;
      getline(cin, ticket);
   }
   cout << "Total sales were " << total << endl;

   return 0;
}

Sample output:

sales      
Type sale info (enter to quit)
ramm 10 20
ramm sold 2 items worth 30.00
Type sale info (enter to quit)
smith 11 30
smith sold 2 items worth 41.00
Type sale info (enter to quit)
morgan 33 44 55 66
morgan sold 4 items worth 198.00
Type sale info (enter to quit)

Total sales were 269.00