The difference between struct and class

The variable by default in class is public in Private,struct, the other two are similar, you can have a constructor destructor, or you can inherit. #include  <iostream>using namespace std;enum breed {golden,cairn,dandie,shetland ,doberman,lab};struct mammal{    public:         mammal (): Itsage (2), Itsweight (5) {}        ~mammal ()  {}         int getage ()  const {return itsage;}         void setage (Int age)  {itsAge = age;}         int getweight ()  const {return itsweight;}         void setweight (int weight)  {itsWeight =  weight;}         void speak ()  const {cout<< "\nmammal  Sound! ";}         void&nbsp Sleep ()  const {cout<< "\nshhh.i ' m sleeping.";}     protected:        int itsAgel;         int itsWeight;                }; struct Dog:public Mammal{     Public:        dog (): Itsbreed (GOLDEN) {}         ~dog () {}        breed getbreed ()  const  {return itsbreed;}         void setbreed (breed breed)  {itsBread =  breed;}         void wagtail ()  const {cout<< "tail  Wagging...\n ";}         void begforfood ()  const {cout<< "begging  for&nbSp;food...\n ";}     private:        BREED itsBreed;        };int main () {    dog fido;     fido. Speak ();     fido. Wagtail ();    cout<< "Fido is" <<fido. Getage () << "years old \n";    return 0;       }

The difference between struct and class