// This program uses strcmp to compare the string entered
// by the user with the valid stereo part numbers.
#include <iostream>
#include <iomanip>
#include <cstring>
using namespace std;

int main()
{
   const double APRICE = 249.0, // Price A
                BPRICE = 299.0; // Price B
   const int SIZE = 9;          // Array size
   char partNum[SIZE];          // To hold the part number

   // Get a part number from the user.
   cout << "The stereo part numbers are:\n";
   cout << "\tBoom Box, part number S147-29A\n";
   cout << "\tShelf Model, part number S147-29B\n";
   cout << "Enter the part number of the stereo you\n";
   cout << "wish to purchase: ";
   cin.width(SIZE);  // Restrict input for code safety.
   cin >> partNum;
   
   // Set the numeric output formatting.
   cout << fixed << showpoint << setprecision(2);
   
   // Determine and display the correct price.
   if (strcmp(partNum, "S147-29A") == 0)
      cout << "The price is $" << APRICE << endl;
   else if (strcmp(partNum, "S147-29B") == 0)
      cout << "The price is $" << BPRICE << endl;
   else
      cout << partNum << " is not a valid part number.\n";
   return 0;
}