Arbitary scope

scope.cpp

class Foo
{
public:
   Foo() { std::cout << "ctor\n"; }
   ~Foo() { std::cout << "dtor\n"; }
};
int main()
{
   std::vector<Foo> foos;
   {
      Foo foo;
      foos.push_back(foo);
   }
   std::cout << "Only 1 Foo object exists at this point, good!\n";
   return 0;
}