C++ Tutorial/Class/inner class

#include <iostream>
#include <stdlib.h>
using namespace std;
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";
}
int main()
{
  OuterClass myclass;
  myclass.outerFunction();

  return 0;
}