// Example 9.4. Test program for SalaryInfo 

#include <fstream.h>
#include <assert.h>
#include "money.h"

int main(void)
{
   void SalaryInfo(money&, int&);  // prototype
   
   money total;  // total salary
   int   num;    // number of salaries
   
   SalaryInfo(total, num);
   
   cout << "Total of salaries  = ";
   total.display();
   cout << endl;
   cout << "Number of salaries = " << num << endl;

   return 0;
}

//
// Function to determine the total amount of money spent on 
// salaries and the number of salaries in a file
// Pre:  "EX0904.dat" is a disk file of employee salaries.
// Post: SalaryTotal is the money salary total.
//       NumSalaries is the integer number of salaries.
//

void SalaryInfo(money& SalaryTotal, int& NumSalaries)
{
   double salary;     // salary from the file
   money  SalaryObj;  // salary object with value salary
    
   ifstream SalaryFile("EX0904.dat");
   assert(SalaryFile);
   
   NumSalaries = 0;
   SalaryTotal.AssignMoney(0.0);
   while (SalaryFile >> salary)
   {
      SalaryObj.AssignMoney(salary);
      SalaryTotal.AddTo(SalaryObj);
      NumSalaries++;
   }
 
   SalaryFile.close();
}