/* We have 10 CDs all at different prices. Using arrays and
   increment/decrement compare the prices one by one and
   find the lowest price CD

   9/12/09
*/
#include <iostream>
using namespace std;
int main()
{
    double CdPrices[10] = { 10.23, 9.89, 5.25, 22.50, 15.47, 12.00, 10.50, 14.99, 4, 21.99 };
    // collective prices of CDs
    //double presentPrice; // price of CD being inspected, unaffected by newprice
    //double newPrice; // new lowest price of CD
    int index = 0;

    //cout << "Prices of CDs in a list.\n";
    // displays a list of prices
    /*while ( index < 10 )
    { cout << CdPrices[index] << "\n" << endl;
            ++index;
    }
    */
    cout << "Let's find the cheapest CD!\n";
   while ( index < 10 )
   {
        double presentPrice = CdPrices[index++];
        double newPrice = CdPrices[++index];

            if ( presentPrice > newPrice )
            {
                  presentPrice = newPrice;
            }
            cout << "newPrice is: $ " << newPrice << "\n" << endl;
            cout << "presentPrice is: $ " << presentPrice << "\n" << endl;
            cout << " -------------------------------------------------\n";
    }
    return 0;
}

index = 0;while ( index < 10 ){	// When index is 0 ..	double presentPrice = CdPrices[index++]; // presentPrice = CdPrices[0], index is now 1	double newPrice = CdPrices[++index];	 // index is now 2, presentPrice = CdPrices[2]	// We seemed to have skipped checking CdPrices[1]!	// And when index is 9...	// double presentPrice = CdPrices[index++]; // presentPrice = CdPrices[9], index is now 10	// double newPrice = CdPrices[++index]; // index is now 11, presentPrices = CdPrices[11]; <-- Out of bounds!	if ( presentPrice > newPrice )	{		presentPrice = newPrice;	}	cout << "newPrice is: $ " << newPrice << "\n" << endl;	cout << "presentPrice is: $ " << presentPrice << "\n" << endl;	cout << " -------------------------------------------------\n";}

#include <algorithm>double lowestPrice = *std::min_element( CdPrices, CdPrices + 10 );

double lowestPrice = CdPrices[0];for ( int i = 1; i < 10; ++i )	if ( CdPrices < lowestPrice )		lowestPrice = CdPrices;