automatictypeconversion.cpp

来自「thingking in c++（C++编程思想） 各章节课后练习的答案」· C++ 代码 · 共 23 行

//: C12:AutomaticTypeConversion.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// Type conversion constructor
class One {
public:
  One() {}
};

class Two {
public:
  Two(const One&) {}
};

void f(Two) {}

int main() {
  One one;
  f(one); // Wants a Two, has a One
} ///:~