4elist2101.cpp

《21天学通C＋＋》附盘的原代码。书上的每个例子在这里都有相应的C语言程序。

#define DemoVersion
#define NT_VERSION 5
#include <iostream>


int main()
{
	std::cout << "Checking on the definitions of DemoVersion,";
	std::cout << "NT_VERSION and WINDOWS_VERSION...\n";

	#ifdef DemoVersion
		std::cout << "DemoVersion defined.\n";
	#else
		std::cout << "DemoVersion not defined.\n";
	#endif

	#ifndef NT_VERSION
		std::cout << "NT_VERSION not defined!\n";
	#else
		std::cout<<"NT_VERSION defined as: "<<NT_VERSION<<std::endl;
	#endif

	#ifdef WINDOWS_VERSION
		std::cout << "WINDOWS_VERSION defined!\n";
	#else
		std::cout << "WINDOWS_VERSION was not defined.\n";
	#endif

	std::cout << "Done.\n";
	return 0;
}