list2105.cpp

teach yourself C++ in 21 days 第五版

// Listing 21.5 - Printing values in DEBUG mode
#include <iostream>
using namespace std;
#define DEBUG

#ifndef DEBUG
   #define PRINT(x)
#else
   #define PRINT(x) \
         cout << #x << ":\t" << x << endl;
#endif

enum BOOL { FALSE, TRUE } ;

int main()
{
   int x = 5;
   long y = 73898l;
   PRINT(x);
   for (int i = 0; i < x; i++)
   {
      PRINT(i);
   }

   PRINT (y);
   PRINT("Hi.");
   int *px = &x;
   PRINT(px);
   PRINT (*px);
   return 0;
}