Re: [suse-programming-e] Registering another class as a variable in one class (Beginner Question).

4 Oct 2004

      Dear my friend, Daryl....

Yessss....!!! Your example code is very usefull... I
understand now.
After I tried to understand your code, I modified my
code (but firstly without making the class in the
separated header files) and it run properly.

Than I tried to improve my code with separated header
files... and it runs propely...

Thanks Daryl... Thank you for your patience helping me
on my first step.

ps. Now I am doing a lot of homework at home for doing
practices from a GNU C++ book. Next time I am going to
come here with a more qualified question.
--- Daryl Lee  wrote:
...
See my comments inline below
...
Dear Paul.
I am still confused.
Sorry I am a really beginner in GNU C++.
1. May I make 2 classes in one file?
You may declare (and define) as many classes as you
On Thu, Sep 30, 2004 at 06:16:10AM -0700, Prabu
Subroto wrote:
like.  If you have
Java experience, this may seem strange, but this
isn't Java.
...
2. header is somewhat like this : "#include
.
I am confused how should the header file of my
"menu"
class for registering "samba" class in the "menu"
class?
Could you give me an example of the header file of
my
"menu" class please....?
I took the liberty of reorganizing and reformatting
your code.  It is at
the bottom of this message.  I also took the liberty
of repairing a
defect you haven't encountered yet.  Note the
removal (by commenting it
out) of the FOR loop in samba::tamil().  Finally, I
removed the .h from
#include  and added a "using namespace
std".  Your code now
compiles silently.
...
Thank you very much in advance. 
--- Paul Howie  wrote:
...
You need to pre-declare the class samba.
Just moving it above the main method should do
...
...
trick, but you
might want to declare it in a header file for
safety.
Paul
On Thu, 30 Sep 2004 05:16:01 -0700 (PDT), Prabu
Subroto
 wrote:
...
Dear my friends..
I am practicing GNU C++ on SuSE 9.1.
But if I compile my code I got this error
message
as
below:
====
patrixlinux@patrix:~/arsip/proyek/gcc/liss>
g++ -o
liss ./liss.cpp
In file included from
/usr/include/g++/backward/iostream.h:31,
                 from liss.cpp:1:
...
warning: #warning This file includes at least
one
deprecated or antiquated header. Please
consider
using
one of the 32 headers found in section
17.4.1.2 of
/usr/include/g++/backward/backward_warning.h:32:2:
the
...
C++ standard. Examples include substituting
...
...
...
header for the  header for C++ includes,
or
<sstream> instead of the deprecated header
. To disable this warning use
-Wno-deprecated.
liss.cpp: In member function `void
...
liss.cpp:19: error: `samba' undeclared (first
use
<X>
menu::tampil()':
this
...
function)
liss.cpp:19: error: (Each undeclared
identifier is
reported only once for each
   function it appears in.)
liss.cpp:19: error: `s' undeclared (first use
the
the
this
...
...
...
function)
liss.cpp:19: error: syntax error before `('
token
liss.cpp: At global scope:
liss.cpp:39: error: `struct samba' used prior
to
declaration
patrixlinux@patrix:~/arsip/proyek/gcc/liss>
====
Why is it so?
Thank you very much in advance.
ps.Sorry for my stupid question.
====
Here is my code.
====
#include 
#include 
#include 
class menu {
public:
    char pilihan;
    void tampil();
};
void menu::tampil(){
for (;;){
cout << "Menu : (S)amba (P)ostfix (B)ind
(Q)uit\n";
cin >> pilihan;
switch ( toupper(pilihan) ){
case 'S':
cout << "You are administrating Samba Server"
<<
endl;
 samba * s = new samba();
 s->tampil();
break;
case 'P':
cout << "You are administrating Postfix
Server" <<
endl;
break;
case 'B':
cout << "You are administrating BIND Server"
<<
endl;
break;
case 'Q':
cout << "You selected Quit. Good bye!" <<
endl;
exit(0);
default:
cout << "***No such command!***" << endl;
break;
}
}
}
class samba {
public:
    char resource[50];
    void tampil();
};
void samba::tampil(){
    for(;;){
        cout << "Share file or directory: ";
        cin >> resource;
    }
}
int main(){
    menu * m = new menu();
    m->tampil();
return 0;
}
New, improved version:
#include <iostream>
#include 
#include 
using namespace std;
class menu {
public:
    char pilihan;
    void tampil();
};
class samba {
public:
    char resource[50];
    void tampil();
=== message truncated ===

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Prabu Subroto

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