dynamic cast from father to child

Question

I have created three classes (creature , dragon , wizard) dragon and wizard inherit from the creature class when I do a dynamic cast like this

void dragon::atk(creature *creat){
if(dynamic_cast<dragon*>(creat))
    //

cannot dynamic_cast 'creat' (of type 'class creature*') to type 'class dragon*' (source type is not polymorphic)|

I've searched a lot but don't know why this error occur

It means `creature` must have at least one virtual function. It should be at least destructor in your case. — Slava, Sep 19 '18 at 15:16
please provide a [mcve]. You say `dragon` inherits from `creature` ? code or it didnt happen :P — 463035818_is_not_an_ai, Sep 19 '18 at 15:16

score 1 · Accepted Answer · answered Sep 19 '18 at 15:18

1

dynamic_cast generally requires polymorphic types. That means the types involved must have at least one virtual member function (can be a destructor).

answered Sep 19 '18 at 15:18

Michael Kenzel

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Please flag/vote to close obvious duplicates. – NathanOliver Sep 19 '18 at 15:19
thx bro it works now – Okasha Sep 19 '18 at 15:41

dynamic cast from father to child

1 Answers1