복사방지 클래스 상속시

class NonCopyable
{
public :
 
	// 복사생성자
	NonCopyable(const NonCopyable&) = delete;
 
	// 대입연산자
	NonCopyable& operator =(const NonCopyable&) = delete;
 
protected :
 
	//기본생성자
	NonCopyable() = defaulf; // or NonCopyable() {}
 
	// 소멸자
	~NonCopyable() = default; // or ~NonCopyable() {}
};

class Foo : public NonCopyable
{
};

//... some stuffs
 
int main()
{
    Foo a;
    Foo b{a}; // Error Foo is non copyable
}