Assignment Operator - What Is The Diffrence Between A "assignment Operator" And A "copy Constructor"
Answer1.In assignment operator, you are assigning a value to an existing object. But in copy constructor, you are creating a new object and then assigning a value to that object. For example:complex c1,c2;c1=c2; //this is assignmentcomplex c3=c2; //copy constructorAnswer2.A copy constructor is used to initialize a newly declared variable from an existing variable. This makes a deep copy like assignment, but it is somewhat simpler:There is no need to test to see if it is being initialized from itself.There is no need to clean up (eg, delete) an existing value (there is none).A reference to itself is not returned.
2009-2016 downloadmela.com. All rights reserved.