?? operatoroverloadingconversion.cpp
字號(hào):
//: C12:OperatorOverloadingConversion.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
class Three {
int i;
public:
Three(int ii = 0, int = 0) : i(ii) {}
};
class Four {
int x;
public:
Four(int xx) : x(xx) {}
operator Three() const { return Three(x); }
};
void g(Three) {}
int main() {
Four four(1);
g(four);
g(1); // Calls Three(1,0)
} ///:~
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