#include <iostream>
#include "conditions.h"		//  include the possible conditions
using namespace std;


// NOW we only write ONE print function, for all possible conditions
// for whether to print an array element.  The condition will be passed
// IN to the function, as a functor.
template<typename Condition>
void PrintArray(const int* array, unsigned int size, Condition cond)
{
   bool first = true;
   cout << "{";
   for (unsigned int i = 0; i < size; i++)
   {
      if (cond(array[i]))       // if the condition is true  
      {                         // then print the item
         if (!first)
            cout << ", ";
         cout << array[i];
         first = false;
      }
   }           
   cout << "}\n";
}

int main()
{
   int list[15] = {-2, 5, 0, 14, 123, -67, -90, 85, 32, 200,
		    50, -21, 80, 77, -123};

   cout << "Print the array:\n";
   PrintArray(list, 15, Always());

   cout << "\nPrint the positive elements of the array:\n";
   PrintArray(list, 15, IsPos());

   cout << "\nPrint the negative elements of the array:\n";
   PrintArray(list, 15, IsNeg());

   cout << "\nPrint the odd elements of the array:\n";
   PrintArray(list, 15, IsOdd());

   cout << "\nPrint the even elements of the array:\n";
   PrintArray(list, 15, IsEven());

   cout << "\nPrint the elements of the array divisible by 3:\n";
   PrintArray(list, 15, IsDivisBy3());

   cout << '\n';
}