Can any one explain what is copy constructor?

Question

I tried but i am not getting how it works...

Answer 1

A constructor which takes an object of it's own class as an argument to initialize a new object, is a copy constructor. E.g.

class A {
//...
};

int main() {
A obj;
// some operations with obj
A obj2(obj);
// obj2 initialized using obj
}

Answer 2

Ok.. Thanks Hasty for answering my question..