Week six project 1-deep copy experience

(1) Read the following procedure to make up for outstanding comments

#include <iostream> #include <cstring>using namespace Std;class a{private:    char *a;public:    A (char *AA)    {        a = new Char[strlen (AA) +1];  (a) The significance of this approach is to open up a new space for storing data        strcpy (A, AA);  (b) The relationship between data member A and form parameter AA: Copy to copied relationship    }    ~a ()    {        delete []a;   (c) The significance of this process is to  remove the new space in a timely manner and avoid wasting memory leaks    }    void output ()    {        cout<<a<<endl;    }}; int main () {    A A ("Good Morning, Code monkeys!");    A.output ();    A B ("Good Afternoon, codes!");    B.output ();    return 0;}

(2) What happens if you remove the line where the comment (a) is located? Program Run Error

Why does a data member occupy 1 of the storage space on a AA length basis? and the ending character ' --'

If pointer A is not a pointer to a character (that is, an address that is not a string), is it necessary to add 1? No

(3) To add a copy constructor for Class A, test with the following main function

#include <iostream> #include <cstring>using namespace Std;class a{private:    char *a;public:    A (char *AA)    {        a = new Char[strlen (AA) +1];        strcpy (A, AA);    }    A (a &b)    {        a = new Char[strlen (B.A) +1];        strcpy (A,B.A);    }    ~a ()    {        delete []a;    }    void output ()    {        cout<<a<<endl;    }}; int main () {    A A ("Good Morning, Code monkeys!");    A.output ();    A B (a);    B.output ();    return 0;}

@ Mayuko

Week six project 1-deep copy experience