宏函数定义继承类

//: ORDER.CPP -- Order of constructor calls

// with inheritance

#include <iostream.h>

#define inherit(derived, base) class derived : public base { public:   derived() { cout << #derived << endl; } };
class X {};

inherit(A, X)

inherit(B, A)

inherit(C, B)
main() { C c; }

输出结果：

A
B
C

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