c++ - Pointers and Polymorphism -


this question has answer here:

i have problems understanding following c++ code. can please explain me meaning of line 3? ": lmp(ptr)" before constructer mean?

i cannot make sense out of it

class pointers {  public:   pointers(type* ptr) : lmp(ptr)     {}   virtual ~pointers() {}  protected:   type* lmp; };  } 

 : lmp(ptr)

is called constructor initialization list. initialize lmp ptr. see link understanding: what constructor initialization list , why should use it


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