nestclas.cpp

来自「C/C++使用技巧1001例一书的配套代码」· C++ 代码 · 共 29 行

#include <iostream.h>

class Outer {
 public:
   Outer(void) { cout << "Just instantiated an outer\n"; 
                 outer_data = 2002; };
   class Inner {
     public:
       Inner(void) { cout << "Just instantiated an inner\n"; 
                     inner_data = 1001; };
       void show_data(void) { cout << "Inner: " << inner_data << endl; };
     private:
       int inner_data;
   } inside_stuff; 
   void show_all_data(void) { inside_stuff.show_data(); 
                              cout << "Outer: " << outer_data << endl; };
 private:
   int outer_data;
};

void main(void)
 {
   Outer my_data;

   my_data.show_all_data();
 }