Nineth Week on-machine practice Project 1-deep copy experience

Questions and codes:

(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 such treatment lies in the following: ______________________________        strcpy (A, AA);  (b) The relationship between data member A and form parameter AA: ___________________________________    }    ~a ()     {        delete []a;   (c) The meaning of this processing is:  ___________________________________________    }    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? Why? Why does a data member occupy 1 of the storage space on a AA length basis? 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?
(3) To add a copy constructor for Class A, test with the following main function

int main () {A    A ("Good Morning, Code monkeys!");    A.output ();    A B (a);    B.output (); return 0;} 

  /* Copyright (c) 2016, College of Computer and Control engineering, Yantai University all   rights reserced  file name: Test.cpp    : Cai  Completion Date: May 9, 2016  version number: v1.0  Problem Description: Input Description:  program output: */  #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 such treatment lies in the following: ______________________________        strcpy (A, AA);  (b) The relationship between data member A and form parameter AA: ___________________________________    }    A (a &b)    {        a=new Char[strlen ( B.A) +1];        strcpy (A,B.A);    }    ~a ()    {        delete []a;   (c) The meaning of this processing is:  ___________________________________________    }    void Output () {cout<<a< <endl; }};int Main () {    A A ("Good Morning, Code monkeys!");    A.output ();    A B (a);    B.output ();    return 0;}

Operation Result:

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Learning experience:



Nineth Week on-machine practice Project 1-deep copy experience