composition2.cpp

ThinkingC++中文版

//: C14:Composition2.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// Private embedded objects
#include "Useful.h"

class Y {
  int i;
  X x; // Embedded object
public:
  Y() { i = 0; }
  void f(int ii) { i = ii; x.set(ii); }
  int g() const { return i * x.read(); }
  void permute() { x.permute(); }
};

int main() {
  Y y;
  y.f(47);
  y.permute();
} ///:~