// ------------------------------------------------------------
// 		Garage Expenses: Assignment 6     
//                                      
// 	Written By: Caitlin Hansen            
// 	Altered Date: February 5, 2008            
// 
// 	Purpose: To monitor employees and their expenses,
// calculate total expenses, and display in a organized 
// table a summarized expense report: the Employee ID, 
// number of expenses, expense total, and the average 
// of the expenses.
// ------------------------------------------------------------

# include <iostream>
# include <iomanip>
using namespace std;

   const int maxempl = 30;	// maximum employees 

// ------------------------------------------------------------
// Note: the numbers of the array are set to zero
//
// Accepts: the number of employees              
// Returns: the employee expenses and their count               
// ------------------------------------------------------------

void InitializeArrays(float empexpenses[],	// employee expenses
                      	 int count[],		// expenses count
                         int employeeamt)	// employee amount
   {
      for (int i = 0; i < employeeamt; i++)
      {
         empexpenses[i] = 0;
         count[i] = 0;
      }
   }  

// ------------------------------------------------------------
// Note: the expenses are put into the arrays
//
// Accepts: the number of employees, their expenses and count                 
// Returns: the employee expenses and their count                
// ------------------------------------------------------------

void TallyExpenses (float empexpenses[],
                       int count[],
                       int employeeamt)
   { float moneyspent;				// money spent
     int emplid;				// employee id number

     cin >> emplid;    
    
   while (emplid != -1)
     {
     cin >> moneyspent;   
     count [emplid] ++;
     empexpenses [emplid] += moneyspent;
    
     cin >> emplid;
     }
   }
// ------------------------------------------------------------
// Note: using the arrays, a summary report is produced      
// 
// Accepts: the number of employees, their expenses and count                       
// Returns: nothing                           
// ------------------------------------------------------------

void ReportExpenses (float empexpenses[],
                        int count[],
                        int employeeamt)
   { float avgexpenses,				// average of expenses
           totalexpenses = 0,			// total of expenses
           lowest = 300;			
     int total = 0,
         lowestempl;

   cout << "\t\t -------------------------" << endl;
   cout << "\t\t " << " Expense Summary Report " << endl;
   cout << "\t\t -------------------------" << endl;
   cout << endl;
   cout << "  -----------------------------------------------------------" << endl;
   cout << "   Empl Id   # of Expenses   Expense Total   Average Expense"<< endl;
   cout << "  -----------------------------------------------------------" << endl;
   cout << endl;
   cout << fixed << setprecision(2);    
   for (int i = 0; i < employeeamt; i++)
   {   
      avgexpenses =  empexpenses[i] / static_cast<float>(count[i]);
      
      cout <<"    " << setw(4) << i << "\t   "<< count [i]; 
      cout << "\t     "<< setw(7)<< empexpenses[i] << "\t   ";
      cout << "     "<< setw(5) << avgexpenses << endl; 
      total += count[i];   
      totalexpenses += empexpenses[i];
    
      if(empexpenses[i] < lowest) 
        {
          lowest = empexpenses[i];
          lowestempl = i;
        }
        
   }
   cout << "  -----------------------------------------------------------" << endl;
   cout << "   Totals: " << "\t  "  << total << "\t     " << setw(7) << totalexpenses << endl;
   cout << "  -----------------------------------------------------------" << endl;
   cout << endl;
   cout << "Employee ID Number " << lowestempl << " had the lowest total expense amount! Good job!";
   cout << endl;
   }

// ------------------------------------------------------------
// 			 Main Function  
// ------------------------------------------------------------
 
int main () 
{
   float empexpenses[maxempl];			
   int count[maxempl], employeeamt;
    
   cin >> employeeamt;			
   
   InitializeArrays (empexpenses, count, employeeamt);
   TallyExpenses (empexpenses, count, employeeamt);
   ReportExpenses (empexpenses, count, employeeamt);
   cout << endl;
  
return 0;
}