// Inventory Displayer
// Demonstrates constant references
#include <iostream>
#include <string>
#include <vector>
using namespace std;

// Function Prototypes:
//
// Notice: parameter vec is a constant reference to a vector of strings
void display(const vector<string>& inventory);


int main()
{
   vector<string> inventory;
   inventory.push_back("sword");
   inventory.push_back("armor");
   inventory.push_back("shield");
   display(inventory);
   return 0;
}

// parameter vec is a constant reference to a vector of strings
// pass by reference here code save time as it does not need to allocate
// memory to make a copy of the inventory vector (assume it is really large)
// The use of const means that the values in the vector cannot be
// changed by this function... it works as a failsafe feature
// to prevent intelligence failures
void display(const vector<string>& vec)
{
   cout << "Your items:\n";
   for (vector<string>::const_iterator iter = vec.begin();
   iter != vec.end(); ++iter)
   {
      cout << *iter << endl;
   }
}