Week Nineth-Program Reading

/*copyright (c) 2016, *all Rights reserved, School of computer and Control engineering, Yantai University. * File name: My.cpp *    Creator: Businessman * Completion date: May 6, 2016 * * Problem Description: Read the program, write out the results of the program and understand its operating mechanism. */#include <iostream> #include <cstring>using namespace Std;class a{  char *a;  Public:      A (a &t);      A (char *aa)     {          a=new char[strlen (aa) +1];//The significance of this is that the memory space can be dynamically allocated, according to actual needs, more efficient use of memory;          strcpy (A,AA);// Data member a relates to the form parameter AA: AA is a parameter, returns a value according to the length of AA, +1 is the ending character, and then a string of AA is copied to a.      }      ~a () {      delete[]a;//when the main function ends, the destructor is performed, freeing previously dynamically allocated memory.      }     void output () {cout<<a<<endl;}}; A::a (A &t) {a=new Char[strlen (T.A) +1];//The significance of this is: can dynamically allocate memory space, according to actual needs, more efficient use of memory;          strcpy (A,T.A);} int main () {    A A ("Good monring, Code monkeys!");    A.output ();    A B (a);    B.output ();    return 0;}

Week Nineth-Program Reading