孙铭泽

#include<iostream>using namespace std;class base{public:base(){prepare();cout<<"base new "<<endl;}~base(){cleanup();cout<<"delete base"<<endl;}virtual void prepare(){cout<<"base's prepare"<<endl;}virtual void cleanup(){cout& Read More

C++类String的实现代码：#include<iostream>using namespace std; class String{ friend ostream& operator<< (ostream&,String&);public: String(const char* str=NULL); //赋值构造兼默认构造函数(char) String(const String &other); //赋值构造函数(String) String& operator=(const String&other... Read More