Instantiate constructor with Class pointer as a parameter

Question

a.hpp file:

namespace hello  
{  
class A : public hi::B    
public:
    A(C* my_hello);    
private:    
    const C* p_hello; 
};

a.cpp :

hello::A::A(C* my_hello)    
: m_name(0);    
{  
}

In b.cpp file:

hello::A *random = new hello::A();

//-> Error in this line saying no instance of constructor
How to instantiate the constructor when there is a pointer to a class in the parameter

Answer 1

In your .hpp file, you aren't defining a constructor for A, you typed hello(...) instead.

Also, since you defined a constructor, your class doesn't have a default constructor anymore (ie one that doesn't need any arguments).

When calling the constructor of your class in the new expression, you must supply al needed arguments.