How to make a C++ class produce non cloneable objects

Question

How can I make a Class non-cloneable like we can do in Java while creating singleton.

Is there any condition we can put on copy constructor so that an exception can be thrown if user tries to make a copy of an object?

I am a novice in C++ so kindly add any info to this or redirect if an answer is already available for the same.

Answer 1

Just declare copy constructor and copy assign operator private

in C++03

class NonCopyable
{
public:
   NonCopyable() { }

private:
   NonCopyable(const NonCopyable&);
   NonCopyable& operator=(const NonCopyable&);

};

Also you can make a class derive from NonCopyable, AnotherType is un-copyable

class AnotherNonCopyable : private NonCopyable
{
   public:
     AnotherNonCopyable () {}
}

With C++11:

class NonCopyableType
{
public:
  NonCopyableType(const NonCopyableType&) = delete;
  NonCopyableType& operator=(const NonCopyableType&) = delete;
};