Write a C++ program illustrates copy constructor.

#include <iostream.h> 
 #include <conio.h> 
 #include <string.h> 
 class base 
 { 
         private: 
                        char *name; 
                        int len; 
         public: 
                        base() {} 
                        base( char* n) 
                         { 
                                 len=strlen(n); 
                                 name=new char(len+1); 
                                 strcpy(name,n); 
                         } 
                        base(const base& str) 
                        { 
                                len=str.len; 
                                name=str.name; 
                         } 
                       void show() 
                        { 
                             cout<<"Name : "<<name<<"\n"; 
                         } 
 }; 
                void main() 
         { 
               clrscr(); 
               base s1("Dinesh Thakur"); 
               s1.show(); 
               base s3(s1); 
               s3.show(); 
               getch(); 
          } 
 Output : 
 Name : Dinesh Thakur 
 Name : Dinesh Thakur