CODEWITHSUNDEEP
c++constructor
KutengF
KutengF

Reputation: 51

C++ Question about two class constructors

My teacher gave me a sample code, but I'm a bit confused.

class CBook
{
...
    pubic:
        CBook();
        CBook(string Title, string Auther, int Year); // I know this is the constructor
        ~CBook(); // and this is the destructor
};

I wish to know the use of CBook();, is this line of code really necessary?

Thanks

Upvotes: 1

Views: 53

Answers (1)

NixoN
NixoN

Reputation: 683

Actually compiler will call this constructor in case you will do like that:

CBook obj;

in another words, you will not pass any arguments to it.

So, if you delete it and try for example:

CBook obj;

compiler will give you an error like "no default constructor"

Sometimes we need object without any of its members filled to fill the later.

Upvotes: 1

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