main.cpp

来自「重载==运算的例子」· C++ 代码 · 共 26 行

class bashful {
public:
    int operator==(const bashful&)  { return 1; }
};
class doc : public bashful {
    int v;
public:
    doc(const int i) : v(i)  { }
    int operator==(const doc &r)  { return v == r.v; }
    int operator==(const doc &r) const  { return v == r.v; }
};
class dopey {
    int v;
public:
    dopey(const int i) : v(i)  { }
    operator doc()  { return doc(v); }
    operator doc() const  { return doc(v); }
    int operator==(const dopey &r)  { return (doc::operator doc()) (*this) == (doc::operator const doc()) (r); }
};
main() {
    dopey a(0), b(1);
    if (a == b)
	;
    return 0;
}