#include<iostream.h>

//prototype functions
             void clear_sales(double sales_arr[]); //function for initializing arrays
             void load_sales(double sales_arr[]); //function for reading department sales
             double ave_sales(double sales_arr[]); //function for averaging sales
             void print_sales(double sales_arr[]); //function for printing sales figures
             void sales_diff(double sales_arr[], double); //function for processing the sales difference

void highest_sales(double sales_arr[]);
           

int main()
             {
   double sales_arr[10], average_sales=0;
           

 //clear sales
   clear_sales(sales_arr);

 //load sales
   load_sales(sales_arr);
   
   //average sales
   average_sales = ave_sales(sales_arr);
           

 //print sales output per department
   print_sales(sales_arr);
           

 //prints the average
   cout << "\n";
   cout << "\n";
   cout << "\n";
   cout << "-----------------------------------------------------" ;
   cout << "\n";
   cout << "Average sales for all department is: " << average_sales ;
   cout << "\n";
   cout << "-----------------------------------------------------" ;
   cout << "\n";
   cout << "\n";
   cout << "\n";

 //print sales diff bet dept sales and average sales
   sales_diff(sales_arr, average_sales);
   cout << "\n";
   cout << "\n";
   cout << "\n";

 return 0;

}
           
             // function def
             
             void clear_sales(double sales_arr[]) //initialize array
             {
   int i;

 for (i=0; i<10; i++)
   sales_arr[i] = 0;
   }

void load_sales(double sales_arr[]) //load sales per department
             {
   int i;
   double sales_input;

 for (i=0; i<10; i++)
   {
   cout << "Enter sales for Department " << i+1 << " : " ;
   cin >> sales_input;
   //cout << "\n" ;

 sales_arr[i] = sales_input;
   }
   }
           

double ave_sales(double sales_arr[]) //averages sales per department
             {
   int i;
   double total_sales=0;

 for (i=0; i<10; i++)
   total_sales = total_sales + sales_arr[i];

 return total_sales / 10;

}

void print_sales(double sales_arr[]) //prints results to screen
             {
   int i;

 cout << "\n";
   cout << "\n"; 
   cout << "\n";

 for (i=0; i<10; i++)
   {
   cout << "Department " << i+1 << " has the following sales: " << sales_arr[i];
   cout << "\n";
   
   }
   
   }
           

void sales_diff(double sales_arr[], double average_sales) //gets the sales diff per dept from ave sales
             {
   int i;
   double sales_diff=0;

 for (i=0; i<10; i++)
   {
   sales_diff = average_sales - sales_arr[i];
   cout << "The difference between sales and the average sales for Department " << i+1 << " is: " << sales_diff;
   cout << "\n";
           

 }

}
           

void highest_sales(double sales_arr[], double average_sales) //gets the highest sales
             {
   int i;
   double sales_diff=0, champion_sales=0, challenger_sales=0;
           

 champion_sales = sales_arr[0];
               
   for (i=1; i<9; i++)
   {
           

 if (i > 0)
   {
   challenger_sales = sales_arr[i];

 if (challenger_sales > champion_sales)
   champion_sales = challenger_sales;
   }
   
           

 }
           

 cout << "The difference between sales and the average sales for Department " << i+1 << " is: " << sales_diff;
   cout << "\n";

}

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