ex4_08.cpp

Visual C++ 2005的源代码

// EX4_08.CPP
// Flexible array management using sizeof
#include <iostream>
using std::cin;
using std::cout;
using std::endl;

int main()
{
   char* pstr[] = { "Robert Redford",       // Initializing a pointer array
                    "Hopalong Cassidy",
                    "Lassie",
                    "Slim Pickens",
                    "Boris Karloff",
                    "Oliver Hardy"
                  };
   char* pstart = "Your lucky star is ";
   int count = (sizeof pstr)/(sizeof pstr[0]);  // Number of array elements

   int dice = 0;

   cout << endl
        << " Pick a lucky star!"
        << " Enter a number between 1 and " << count << ": ";
   cin >> dice;

   cout << endl;
   if(dice >= 1 && dice <= count)               // Check input validity
      cout << pstart << pstr[dice - 1];         // Output star name
   else
      cout << "Sorry, you haven't got a lucky star."; // Invalid input

   cout << endl;
   return 0;
}