单例模式

class  {
public:
 cSingle(const cSingle&) = delete;
  cSingle& operator = (const cSingle&) =delete;

    static cSingle* instance() {
       static cSingle __instance;
      return &__instance;
 }
private:
    cSingle() {};
};
int main(){
        cSingle* first = cSingle::instance();
   cSingle* second = cSingle::instance();
   cout << "the first address is :" << first << endl;
 cout << "the second address is :" << second << endl;
}