#include <iostream>
#include <string>
#include <fstream>
 
using namespace std;
 
//Constant array size declaration.
const int LOCATIONS = 20;
 
//Function Prototypes
void readData(int a[], int size, double& data);
double sumArray(double& totalSales);
 
int main()
{ 
   cout.setf(ios::fixed);
   cout.setf(ios::showpoint);
   cout.precision(2);
   ifstream in;
   char inFile[256];
   double a[LOCATIONS] = {0}, sales, totalSales = 0;
   int data = 0;
 
   //Prompts the user for the input file name.
   cout << "Enter the input file name: ";
   cin >> inFile;
 
   // Opens the stream and connects to the file.
   in.open(inFile);
 
   //Checks to see if the input file opened properly.
   //Displays an error message if file not opened.
   if(in.fail( ))
   {
      cout << "Input file opening failed.\n";
      exit(1);
 
      //Closes file explicitly.
      in.close( );
   }
 
 
   //Finds and prints the total sales amount.
   sumArray(totalSales);
   cout << "The total sales are $" << totalSales << endl;
 
 
   //Reads in and displays data.
   while(in >> a[data])
   {
      sales = a[data];
      data++;
 
   }
      cout << "Number Of Locations In File: " << a[0] << endl << endl;
 
   for(int index = 1; index < data; index++)
   {
      cout << "Location Number " << index << ": $" << a[index] << endl;
   }
 
}
 
 
 
double sumArray(double& totalSales)  
{ 
   ifstream in;
   double a[LOCATIONS] = {0}, sales;
   int data = 0;
 
   //Reads in and displays data.
   while(in >> a[data])
   {
    for(int index = 1; index < data; index++)
    {
      totalSales = totalSales + a[index];
      index++;
      return(totalSales); 
 
    }
   } 
 
}

double sumArray(double a[LOCATIONS], double& totalSales) 
{

}

sumArray(a, totalSales);