Search code examples
c++typesinitialization

C++ type of an object initialized with parenthesis

I've made a Class with name Matrix. This class has two constructor, one default constructor and one copy constructor. In addition there is a public method called Determinant .In main I write :

Matrix a(); 
a.Determinant()

or

Matrix a(); 
a->Determinant()

But none of them is valid. I print the type of the a but I can't understand what type is this ?

Solution

  • This is C++'s most vexing parse. The line:

    Matrix a();

    Is interpreted as a declaration of a function that accepts no arguments and returns a Matrix. The proper way to create a default constructed object is simply

    Matrix a;