4elist2104.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。

// Listing 21.4 ASSERTS
#define DEBUG
#include <iostream>
using namespace std;

#ifndef DEBUG
	#define ASSERT(x)
#else
	#define ASSERT(x) \
			if (! (x)) \
			{ \
				cout << "ERROR!! Assert " << #x << " failed\n"; \
				cout << " on line " << __LINE__  << "\n"; \
				cout << " in file " << __FILE__ << "\n";  \
			}
#endif

int main()
{
	int x = 5;
	cout << "First assert: \n";
	ASSERT(x==5);
	cout << "\nSecond assert: \n";
	ASSERT(x != 5);
	cout << "\nDone.\n";
	return 0;
}