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 jinder22
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| 发表于：2008-11-21 16:34:1789楼 得分:0 |
#include <iostream>
#include <typeinfo>
using namespace std;
class CBase
{
public:
int *p;
CBase(){}
~CBase()
{
cout < <"释放堆地址" < <p < <endl;
delete p;
}
CBase(const CBase &cbase)
{
p=cbase.p;//这样跟默认的位拷贝没有区别
//p=new int;
//*p = *(cbase.p); // 这样才是深拷贝！！
}
CBase(int *p)
{
this->p = p;
}
CBase &operator=(const CBase &cbase)//赋值函数
{
p=cbase.p;
}
void print()
{
cout < <"对象" < <this < <":" < <"地址:" < <p < <"\t" < <"值:" < <*p < <endl;
}
};
int main()
{
//int a=8;
//CBase p(&a);//错误,最后p指向了栈内存了
int *a = new int(8);
int *b = new int(4);
int i =1;
int j =2;
int *ii,*pp;
*ii=2,*pp=4;
cout < < *ii < < " " < < ii < < endl;
cout < < *pp < < " " < < pp < < endl;
//pp=NULL;
//pp=ii;
*pp=*ii;
cout < < *ii < < " " < < ii < < endl;
cout < < *pp < < " " < < pp < < endl;
cout < < i < < &i;
CBase p(a);
p.print();
CBase p1(p);
p1.print();
CBase p2(b);
p2=p;
p2.print();
return 0;
} |
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