I searched online and was told that constructor in C++ doesn’t have a return value, but we do have such code:

class A {
public:
    A() {}
};

int main() {
    A a = A();
    return 0;
}

Or,

void f() {
    throw A();
}

int main() {
    try {
        f();
    } catch (A& a) {
        cout << "catched!" << endl;
    }

    return 0;
}

It does look strange. I wonder if a constructor will return something implicitly.