code of C/C++(2)

//char * 类型的成员，如何在构造函数中初始化（弄了一个晚上才搞定）；
//析构函数中记得用delete指令取消内存分配；
//string，int，double...都是直接赋值；
//public 可以改变 私有成员的值 !

#include"std_lib_facilities.h"    

class book{
public:
    book(string n, char ch[],char *dd){
        name = n;
        strcpy_s(isbn,12, ch);
        kk = new char[strlen(dd) + 1];      //Constructor:learn the way to do it!
        strcpy_s(kk, strlen(dd) + 1, dd);
    }
    void printbook();                       // printbook(book b) .exe stop!
    virtual ~book();
private:
    string name;
    char isbn[11];
    char * kk;
};

book::~book(){
    delete [] kk;                           // Destructor:get the memry back;

}

void book::printbook()
{
    cout << name << endl<<isbn <<endl<<kk << endl;
}

int main(){

    book a("hanxinle","12345678901","asdf");
    a.printbook();

    return 0;
}