C++相談室 part134

[95 デフォルトの名無しさん (ﾜｯﾁｮｲ ffd7-wbgk) 2018/02/06(火) 22:06:49.77 ID:CtmFRYuD0]

>>94
class A {
public:
A() {}
A(A const&) { std::cout << "aho"; }
};

class B {
public:
A a;
B() = default;
};

int main()
{
B b, c = b; //this will call you.
}