Diffrence between a "assignment operator" and a "copy constructor"?

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Sabari...

1. Constructor with only one parameter of its same type that assigns to every nonstatic class member variable of the object a copy of the passed object

2. Copy assignment operator must correctly deal with a well constructed object - but copy constructor initializes uninitialized memory

3. Copy constructor takes care of initialization by an object of the same type x

4. For a class for which the copy assignment and copy constructor not explicitly declared missing operation will be generated by the compiler. Copy operations are not inherited - copy of a class object is a copy of each member

5. Member wise assignment: each member of the right hand object is assigned to the corresponding member of the left hand object

6. If a class needs a copy constructor it will also need an assignment operator

7. Copy constructor creates a new object, assignment operator has to deal with existing data in the object

8. Assignment is like deconstruction followed by construction

9. Assignment operator assigns a value to a already existing object

10. Copy constructor creates a new object by copying an existing one

11. Copy constructor initializes a freshly created object using data from an existing one. It must allocate memory if necessary then copy the data

12. The assignment operator makes an already existing object into a copy of an existing one.

13. Copy constructor always creates a new object, assignment never does

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J.Vijayanand