/* 范例：15-3動態配置內存 */
#include <iostream.h>
struct data
{
  char name[20];
};
class teacher
{
  private:
     char name1[20];
  public:
     data *nick;
     teacher(void)			// 無初始化的構造函數
     {
       nick = new data;	// 配置內存
       cout << "teacher(void) class Constructor \n";
     }
     teacher(char *ch)		/* 傳入參數且初始化的構造函數,將name1初始化 */
     {
       nick = new data;	// 配置內存
       strcpy(name1,ch);	// 將ch傳入的字符復制到name1
       cout << "teacher(void) class Constructor \n";
     }
     ~teacher(void)
     { delete nick;	// 為C++釋放內存的指令
       cout << "teacher class Destructor \n";
     }
     void ShowHandLen(void)
     {
       cout << "nick 地址: " << (void *)&nick << endl;
       cout << "nick 內容值: " << nick << endl;
       cout << "name 地址" << &nick->name << endl;
       cout << "name 內容值: "<< nick->name << endl;
       /* cyh動態配置的name1 */
       cout << "cyh name1 地址: "<<(void *)&name1<<endl;
     }
     void display(void)
     {
       // 將name1的地址輸出
       cout << "name1的地址: " << (void *)&name1 << endl;
       // 將name1的內容輸出
       cout << "name1的內容值: " << name1 << endl;
       // 將cyh1動態配置的nick地址輸出
       cout << "nick 的地址: " << &nick << endl;
     }
};
void classTest(void)
{
   teacher *cyh = new teacher;	/* 構造方式6,動態配置一塊teacher對象的存儲
                                空間,將配置空間的地址傳給對象指針*cyh */
   cout << "以teacher類動態配置內存大小 :" \ <<sizeof(teacher)<<" bytes\n";
   cout << "cyh對象存放的內容值: " << (cyh) << endl;
   cout << "cyh對象地址: " << &cyh << endl;
   // 將字符串復制至name[20]
   strcpy(cyh->nick->name,"GreatTeacherCYH");
   cout << "字符串的地址: " << &("GreatTeacherCYH") << endl;
   cyh->ShowHandLen();
   delete cyh;
   //-------------------------------------------------
   char ch[20] = "Great TeacherCYH";
   teacher *cyh1 = new teacher(ch);
     /* 構造方式7,動態配置一塊teacher對象的存儲空間,將配置空間的地址傳給對
        象指針*cyh1,調用其構造函數,并傳入ch將name1做初始化設定 */
   cout << "以teacher類動態配置內存大小 :" \
<<sizeof(teacher)<<" bytes\n";
   cyh1->display();
   cout << "cyh1內容: " << cyh1 << endl;
   cout << "cyh1大小: " <<sizeof(cyh1)<<" bytes"<<endl;
   cout << "cyh1地址: " << &cyh1 << endl;
   cout << "ch的地址: " << &ch << endl;
   cout << "ch[20]的大小: " << sizeof(ch)<<"bytes"<< endl;
   delete cyh1;}
//---------------------------------------------------------------------------
void main(void)
{
  classTest();
  getchar();
}

程序執行結果﹕
teacher(void) class Constructor
以teacher類動態配置內存大小 :24 bytes
cyh對象存放的內容值: 00682F48
cyh對象地址: 0065FDCC
字符串的地址: 0041B20B
nick 地址: 00682F5C
nick 內容值: 00682F64
name 地址00682F64
name 內容值: GreatTeacherCYH
cyh name1 地址: 00682F48
teacher class Destructor
teacher(void) class Constructor
以teacher類動態配置內存大小 :24 bytes
name1的地址: 006833F8
name1的內容值: Great TeacherCYH
nick 的地址: 0068340C
cyh1內容: 006833F8
cyh1大小: 4 bytes
cyh1地址: 0065FDC8
ch的地址: 0065FDB4
ch[20]的大小: 20bytes
teacher class Destructor