C++ instanceof?

if (typeid(object) == typeid(Derived1)){  // do something}

// Suppose you haveclass Car;class Ferrari : public Car;class BMW : public Car;and then a function:bool IsFerrari(Car *c){   // check if pointer of type Car can be converted to type Ferrari   Ferrari *f = (Ferrari *)c;   if (f != 0)              return true;   else      return false;}int main(){   Car *f = new Ferrari;   Car *b = new BMW;   IsFerrari(f);  // returns true   IsFerrari(b); // returns false      delete f;   delete b;}

class Base{public:   virtual void DoStuff() = 0;};class Derived1 : public Base{public:   virtual void DoStuff()   {      // Do something   }};class Derived2 : public Base{public:   virtual void DoStuff()   {      // Do something else   }};

Base* b = GetAnObject();b->DoStuff();

Base* b = GetAnObject();if( Derived1* d1 = dynamic_cast<Derived1*>(b)){   // do something with d1}else if( Derived2* d2 = dynamic_cast<Derived2*>(b)){   // do something with d2}

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Original post by clb In C++ you can check the type runtime as follows: bool IsFerrari(Car *c){ // check if pointer of type Car can be converted to type Ferrari Ferrari *f = (Ferrari *)c; if (f != 0) return true; else return false;}

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Original post by evanofsky Right, I use virtual functions for doing things differently, I just wanted other objects to find out what kind of object it is. For example, if the player hits the "board vehicle" button, it would loop through the objects, checking if each one is close enough to get in. However, I want it to make sure each one is a "Vehicle" before I try to get in it. Before now, the player was "boarding" the gun he was holding!

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Original post by clb In C++ you can check the type runtime as follows: // Suppose you haveclass Car;class Ferrari : public Car;class BMW : public Car;and then a function:bool IsFerrari(Car *c){ // check if pointer of type Car can be converted to type Ferrari Ferrari *f = (Ferrari *)c; if (f != 0) return true; else return false;}int main(){ Car *f = new Ferrari; Car *b = new BMW; IsFerrari(f); // returns true IsFerrari(b); // returns false delete f; delete b;}

class Object{  virtual char* Type() { return "Object"; }};class Item : public Object{  virtual char* Type() { return "Item"; }};

#define OBJECT 0class Object{  virtual int Type() { return OBJECT; }};#define ITEM 1class Item : public Object{  virtual int Type() { return ITEM; }};

#define InstanceOf(x, y) ((x).Type() == (y))Object *obj = new Item();if(InstanceOf(*obj, ITEM))  cout<<"obj is an item."<<endl;

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Original post by evanofsky However, I want it to make sure each one is a "Vehicle" before I try to get in it. Before now, the player was "boarding" the gun he was holding!

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Original post by ffx if (typeid(object) == typeid(Derived1)){ // do something}

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Original post by Verg If you have control over the base code, or any of the heirarchies... I'd suggest re-writing the classes... and not putting objects like Guns and Vehicles on the same inheritance branch. :D