c++ 拷贝

对应c++拷贝方式，我倒是较熟悉。但是对应指针的拷贝，我有些迷糊，所有做了一个简单的程序测试一下。

 1 //object.h
 2 
 3 #ifndef OBJECT_H_
 4 #define OBJECT_H_
 5 
 6 #include <iostream>
 7 
 8 class object{
 9 public:
10     object(){
11         std::cout << "object()" << std::endl;
12     }
13 
14     object(const object&){
15         std::cout << "object(const object&)" << std::endl;
16     }
17 
18     ~object(){
19         std::cout << "~object()" << std::endl;
20     }
21 };
22 
23 #endif /* OBJECT_H_ */

main.cpp

 1 #include <iostream>
 2 #include "object.h"
 3 
 4 int main(int argc, char **argv) {
 5     object obj1;
 6     object obj2(obj1);
 7     object obj3 = obj2;
 8 
 9     std::cout << "---------------------" << std::endl;
10 
11     object *pObj1 = new object();
12     object *pObj2(pObj1);
13 
14     std::cout << "pObj1=" << pObj1 << std::endl;
15     std::cout << "pObj2=" << pObj2 << std::endl;
16 
17     std::cout << "---------------------" << std::endl;
18 
19     return 0;
20 }

输出结果：

经过测试我们可以发现：

object *pObj1 = new object();
object *pObj2(pObj1);

这只是一种简单的值（地址）的拷贝。现在，pObj1和pObj2指向同一个对象。