Local class is a class defined inside a function. Following are some of the rules for using these classes.

• Global variables declared above the function can be used with the scope operator "::".
• Static variables declared inside the function can also be used.
• Automatic local variables cannot be used.
• It cannot have static data member objects.
• Member functions must be defined inside the local classes.
• Enclosing functions cannot access the private member objects of a local class.

   #include <iostream.h>
   int y;
   void g();
   int main()
    {
   	g();
   	return 0;
    }
   void g()                      
   {
    class local             
      {
       public:
          void put( int n) {::y=n;}
          int get() {return ::y;} 
        }ab;
     ab.put(20);
     cout << "The value assigned to y is::"<< ab.get();
    }

    The value assigned to y is::20

In the above example, the local class "local" uses the variable "y" which is declared globally. Inside the function it is used using the "::" operator. The object "ab" is used to set, get the assigned values in the local class.