std::string str;

int value;

Base() = delete;

Base(std::string s) {

str = s;

}

// delegate constructor

Base(std::string s, int v) : Base(s) {

value = v;

}

// final constructor

virtual void foo() final {

return;

}

virtual void foo(int v) {

value = v;

}

double floating;

Subclass() = delete;

// inherit constructor

Subclass(double f, int v, std::string s) : Base(s, v) {

floating = f;

}

// explifict constructor

virtual void foo(int v) override {

std::cout << v << std::endl;

value = v;

}

// Subclass oops; // illegal, default constructor has deleted

Subclass s(1.2, 3, "abc");

s.foo(1);

std::cout << s.floating << std::endl;

std::cout << s.value << std::endl;

std::cout << s.str << std::endl;