When copy constructor can be used?

Question Posted / shalini

4 Answers
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When copy constructor can be used?..

Answer / jack

while compiler encounters following situation it uses the CC
1.when assigning one object to another object of same class
type

2.When an object is passed to the called function.....

3.when a function returns the object type and assigns it to
the another object..........

Is This Answer Correct ?

18 Yes

4 No

When copy constructor can be used?..

Answer / sachin magdum

1. "assigning" - don't use this word, it should be
initializing an object using another object of same type
2. When the object is passed to function - "by value"
3. when a function returns the object type - "by value"
here doesn't matter if you are assigning that returned
value to to another object or not.

Is This Answer Correct ?

9 Yes

4 No

When copy constructor can be used?..

Answer / vikas sood

hi fellows..try this code
class A {
public:
A() { }
A(const A& rhs)
{
cout<<"inside copy constructor..";
}
};

int main()
{
std::vector<A> aVec(10);
}

The answer to this is another reason a copy constructor
will be called.