constructororder.cpp

来自「C语言数值算法程序大全（第二版）,课本文件」· C++ 代码 · 共 31 行

//: C08:ConstructorOrder.cpp
// From "Thinking in C++, 2nd Edition, Volume 2"
// by Bruce Eckel & Chuck Allison, (c) 2003 MindView, Inc.
// Available at www.BruceEckel.com.
// Order of constructor calls
#include <iostream>
#include <typeinfo>
using namespace std;

template<int id> class Announce {
public:
  Announce() {
    cout << typeid(*this).name()
         << " constructor " << endl;
  }
  ~Announce() {
    cout << typeid(*this).name()
         << " destructor " << endl;
  }
};

class X : public Announce<0> {
  Announce<1> m1;
  Announce<2> m2;
public:
  X() { cout << "X::X()" << endl; }
  ~X() { cout << "X::~X()" << endl; }
};

int main() { X x; } ///:~