Write A C++ Program To Define Inner Class

#include <iostream.h> 
 #include<conio.h> 
 #include <stdlib.h> 
 class OuterClass 
 { 
       public: 
                  void outerFunction(); 
                  class InnerClass 
               { 
      public: 
                   void innerFunction(); 
               }; 
 }; 
                   void OuterClass::outerFunction() 
              { 
                   cout << "This is a function in the base class\n"; 
                   InnerClass myclass; 
                   myclass. innerFunction(); 
               } 
                   void OuterClass:: InnerClass:: innerFunction() 
              { 
                   cout<< "This is a function in the InnerClass class \n"; 
               } 
                    void main() 
              { 
                    clrscr(); 
                    OuterClass myclass; 
                    myclass.outerFunction(); 
                    getch(); 
               }