/* 范例：15-2 */
#include <iostream.h>
struct data
{
  float height; float weight;
};
class animal
{
  public:
     data *hei;
     data *wei;
     animal(void)
     {
       hei = new data;  wei = new data;  // 配置內(nèi)存
       cout << "animal(void) class Constructor \n";
     }
     ~animal(void)
     {
       delete hei; delete wei;  // 為C++刪除內(nèi)存的指令
       cout << "animal class Destructor \n";
     }
     void ShowHandLen(void)
     {
       cout << "Tiger's height = " << hei->height << "cm" \
           << "\t\tTiger's weight = " << wei->weight << "kg\n";
     }
};
void classTest(void)
{
   animal tiger; // 構(gòu)建方式1,構(gòu)建一個(gè)tiger對(duì)象
   cout << "size =" << sizeof(tiger) << endl;

   /* 定義一個(gè)對(duì)象指針tiger1, 將tiger的地址值設(shè)定給對(duì)象指針tiger1,tiger1將根據(jù)
      tiger的地址操作其成員并改變其內(nèi)容。 */
   animal *tiger1; tiger1 = &tiger;
   tiger.hei->height = 50;	// tiger對(duì)象,設(shè)定高度初值為50
   tiger.wei->weight = 70;	// tiger對(duì)象,設(shè)定重量初值為70
   cout <<"tiger 地址="<<&tiger<<"\t\ttiger1 地址=" \
       <<&tiger1<<"\n";
   cout <<"tiger height add = "<< &tiger.hei->height \
       <<"\ttiger weight add= "<<&tiger.wei->weight<<endl;
   cout <<"tiger *hei 地址="<<&tiger.hei<<"\ttiger *wei地址=" \
       <<&tiger.wei<<endl;
   cout <<"height = "<<tiger.hei->height << "\tweight = " \
       <<tiger.wei->weight<<"\n\n";

   // tiger1按地址操作tiger的內(nèi)容,將改變高度為200
   tiger1->hei->height = 200;
   // tiger1按地址操作tiger的內(nèi)容,將改變重量為80
   tiger1->wei->weight = 80;

   cout <<"tiger1 height add = "<< &tiger1->hei->height \
       <<"\ttiger1 weight add= "<<&tiger1->wei->weight<<endl;
   cout <<"tiger1 *hei 地址="<<&tiger1->hei<<"\ttiger1 *wei=" \
       <<&tiger1->wei<<endl;
   tiger1->ShowHandLen();
}
//---------------------------------------------------------------------------
void main(void)
{
  classTest();
  getchar();
}
程序執(zhí)行結(jié)果：
animal(void) class Constructor
size =8
tiger 地址=0065FDF4			tiger1 地址=0065FDCC
tiger height add = 00682F48   	tiger weight add= 00682F5C
tiger *hei 地址=0065FDF4  		tiger *wei地址=0065FDF8
height = 50     weight = 70

tiger1 height add = 00682F48	tiger1 weight add= 00682F5C
tiger1 *hei 地址=0065FDF4	tiger1 *wei=0065FDF8
Tiger's height = 200cm	Tiger's weight = 80kg
animal class Destructor