Thread: [Dev-C++] (no subject) (Page 4)

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#include <iostream.h>
#include <stdio.h>

//QUESTION: Using what feature on the compiler to enter the  'argv'?
void main(int argc, char** argv)
{
     int a = 10;
     int b = a + argc;
     cout<<" b = a + argc: "<<b<<endl;
     int d = a + int(argv);//
     cout<<" d = a + argv: "<< d<<endl;
    getchar();
}

//I enter the 'argc' through the input of 'Parameter' Button then hit
//the 'Exection' to run the program. But I dont know how/where to enter the
//'argv' through the command line.....

Very appreciate your help..........

You appear to not understand what argc and argv are. They are a standard =
part of a C/C++ program with a main() function and are linked together =
in thier use. When you execute a program and follow it with various =
parameters, i.e.:

MyProg -a 20 -b MyFile.foo

then the OS breaks the string down into each of the individual words =
(seperated by spaces (usuualy)) and uses both argc and argv together to =
make them accessible to the program. The first argc is pretty simple, it =
gives you the number of arguments passed to your program including the =
string representing the executable command. So in the above example argc =
would be 5. Note it depends on the OS as to how the command is broken =
down (AFAIK), but usualy spaces are it, possibly with commands enclosed =
in qoutes treated as one command and kept whole.

The second argv is a little more complex. I hope you are OK with =
pointers, because we are dealing with a pointer, to a pointer, to a =
string. Or if you prefer an array of pointers to strings. Basically you =
have an array of values that point to all the command strings passed. =
The OS doesn't convert numbers for you (as you seem to think) it just =
passes everything as strings. The above command would translate into:

"MyProg", "-a", "20", "-b", "MyFile.foo"

If you wanted to display the name of the program then you could use:

cout << argv[0];

or

cout << *argv;

The array version is used more often as it is easier to understand when =
seen. The fifth argument could be displayed with:

cout << argv[4];

Displaying: MyFile.foo

Using this method the OS can allow any kinds of arguments to be passed =
into a program without worrying about what is right or wrong. It leaves =
it up to you, the programmer, to detect right and wrong.

Here is a simple example (untested):

// Add.exe

#include <iostream>
#include <cstdlib>
#include <cctype>

int main(int argc, char *argv[])
{
    // make sure enough args supplied
    if(argc !=3D 3)
    {
        cout << "Usage: " << argv[0] << " A B" << endl;
        cout << "Where A and B are integers" << endl;
        exit(1);
    }

    // make sure both values are integers
    char *pch;
    // first arg
    for(pch =3D argv[1]; pch; ++pch)
    {
        if(!isdigit(*pch))
        {
            cout << "Values must be integers!" << endl;
            exit(2);
        }
    }
    // second arg
    for(pch =3D argv[2]; pch; ++pch)
    {
        if(!isdigit(*pch))
        {
            cout << "Values must be integers!" << endl;
            exit(2);
        }
    }

    // add the numbers together and output
    cout << argv[1] << " + " << argv[2] << " =3D ";
    cout << atoi(argv[1]) + atoi(argv[2]) << endl;
   =20
    return 0; // all ok
}

Try compiling that, correct any syntax or other errors I may have made, =
and it should when executed from a dos prompt output the sum of the two =
digits supplied.

If you are a newbie then I don't expect you to understand all that I did =
in that. I'm a bit lazy and didn't want to write it in a way that was =
easier to read to someone not used to pointers etc... (I hope it works =
now).

I hope this helps, Jason.

PS: when I say strings I was refering to the C style of null terminated =
array of chars, and not the container class in C++.
  ----- Original Message -----=20
  From: Joh...@ao...=20
  To: dev...@li...=20
  Sent: Friday, November 23, 2001 1:46 AM
  Subject: [Dev-C++] (no subject)

  #include <iostream.h>
  #include <stdio.h>

  //QUESTION: Using what feature on the compiler to enter the  'argv'?
  void main(int argc, char** argv)
  {
       int a =3D 10;
       int b =3D a + argc;
       cout<<" b =3D a + argc: "<<b<<endl;
       int d =3D a + int(argv);//
       cout<<" d =3D a + argv: "<< d<<endl;
      getchar();
  }

  //I enter the 'argc' through the input of 'Parameter' Button then hit
  //the 'Exection' to run the program. But I dont know how/where to =
enter the
  //'argv' through the command line.....

  Very appreciate your help..........=20

argv is an array of C-string pointers which has stored the arguments
given in command line. argv[0] is the name of the program itself. argc
is the number of argv elements and is at least 1 (the name of the
executable). **argv is also *argv[]. The second is the more notationally
correct (because argv is an array of c-strings). So here is some ANSI
C++ 1998 code demonstrating this:
=20
=20
#include <iostream>
#include <cstdio>
=20
int main(int argc, char *argv[])
{
     using namespace std;
    =20
     cout<<"The total number of arguments including the filename of the
program,\nargc: "<<argc<<endl;
    =20
     cout<<"\nAnd now the arguments only:\n";
    =20
     for(int i=3D1; i<argc; i++)
        cout<<argv[i]<<" ";
       =20
     cout<<endl;
    =20
     getchar();
}

=20
How i executed it:
=20
C:\c>temp 1 test
The total number of arguments including the filename of the program,
argc: 3
=20
And now the arguments only:
1 test
=20
=20
=20
Hope you got it.
=20
=20
Ioannis
=20
* Ioannis Vranos
* Programming pages: http://www.noicys.f2s.com
<http://www.noicys.f2s.com/>=20
* Alternative URL: http://run.to/noicys
=20
=20

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of
Joh...@ao...
Sent: Friday, November 23, 2001 3:47 AM
To: dev...@li...
Subject: [Dev-C++] (no subject)

#include <iostream.h>
#include <stdio.h>

//QUESTION: Using what feature on the compiler to enter the  'argv'?
void main(int argc, char** argv)
{
     int a =3D 10;
     int b =3D a + argc;
     cout<<" b =3D a + argc: "<<b<<endl;
     int d =3D a + int(argv);//
     cout<<" d =3D a + argv: "<< d<<endl;
    getchar();
}

//I enter the 'argc' through the input of 'Parameter' Button then hit
//the 'Exection' to run the program. But I dont know how/where to enter
the
//'argv' through the command line.....

Very appreciate your help..........=20

Hi List,

I want to sent an UDP Datagram via TCP...

The send and recive function works properly in a console app...

Now i want to make a GUI for that...

The problem is that the editfield in my application is a cstring (m_Edit1),
but my app needs a nullterminated string...

If I convert the CString to a nullterminated string I get nothing ...

If I write strcpy(szSendString, "hjsdfhs\0"); it works ....

I have many things tryed but nothing work...

Did you have an Idea ???

What can I do ?

Kind regrads

Christian

When you refer to CString are you talking about a class of some kind or are
you mixing up the C++ class String with a c "style" string?

A c style string is in fact a null terminated string, and when you write
"Hello World!" (note no need for \0) you are just declaring a null
terminated string.

If you are useing the C++ String class then to use it as a C string you have
to use it's member function c_str(); which returns a pointer to a temporary
c style string. Note that you shouldn't try to modify the string through
this function.

Regards, Jason.

----- Original Message -----
From: "Christian Wallukat" <Chr...@vo...>
To: "CPP-Maillinglist (E-Mail)" <dev...@li...>
Sent: Wednesday, December 05, 2001 3:09 PM
Subject: [Dev-C++] (no subject)

> Hi List,
>
>
> I want to sent an UDP Datagram via TCP...
>
> The send and recive function works properly in a console app...
>
> Now i want to make a GUI for that...
>
>
>
> The problem is that the editfield in my application is a cstring
(m_Edit1),
> but my app needs a nullterminated string...
>
> If I convert the CString to a nullterminated string I get nothing ...
>
> If I write strcpy(szSendString, "hjsdfhs\0"); it works ....
>
>
>
>
> I have many things tryed but nothing work...
>
>
> Did you have an Idea ???
>
> What can I do ?
>
>
>
>
> Kind regrads
>
>
> Christian
>
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

I notice the style of the member variable, are you using MS Visual C++ ?
If so, and the CString is a MS Foundation Classes CString, you use either
m_Edit1.getBuffer( )
or cast the CString to a const char*  :
(const char*)m_Edit1
both of which return a pointer to a null-terminated character string.

Kev.

----- Original Message -----
From: Christian Wallukat <Chr...@vo...>
To: CPP-Maillinglist (E-Mail) <dev...@li...>
Sent: Wednesday, December 05, 2001 3:09 PM
Subject: [Dev-C++] (no subject)

> Hi List,
>
>
> I want to sent an UDP Datagram via TCP...
>
> The send and recive function works properly in a console app...
>
> Now i want to make a GUI for that...
>
>
>
> The problem is that the editfield in my application is a cstring
(m_Edit1),
> but my app needs a nullterminated string...
>
> If I convert the CString to a nullterminated string I get nothing ...
>
> If I write strcpy(szSendString, "hjsdfhs\0"); it works ....
>
>
>
>
> I have many things tryed but nothing work...
>
>
> Did you have an Idea ???
>
> What can I do ?
>
>
>
>
> Kind regrads
>
>
> Christian
>
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>

RESPECTED SIR/ MADAM,

Please remove me from the mailing list coz of some reasons which are 
unexplanatory. Please take this e-mail seriously and remove me from the 
mailing list.

Nirmit Kumar

_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

battle.c:8: warning: implicit declaration of function `int titleshot(...)=
'

Any CLUE what this might mean?
Regards,
Andr=E9 C.
Technical Support
=D4=BF=D4=AC
-------------------------------------------------------------------------=
---
-
Visit our support manual at http://supportmanual.com/

I have tried to use the two following statments
 =20
cout.setf(ios::boolalpha);
 // or
cout.setf(ios_base::boolalpha);
 =20
The first gives me the compiler errer " boolalpha is not a member of ios"=
 and the second says "unable to access ios_base", I have not changed any =
of my default paths for liabaries, so how would I fix the error. I have u=
sed ios members in the past...
 =20
Thanks ahead of time,
Joshua T.Get more from the Web.  FREE MSN Explorer download : http://expl=
orer.msn.com

Hi,

I am having some compiler errors with this line:

line 183 -  /* *****  TELA TRES -- cadastro clientes ---------- */

the compiler output is:

183 teste8.cpp
  parse error at end of input

As it is just a comment i have no idea of what is wrong here. Does anyone??

ps: this is the last line of this program.

thanks.

-------------------------------------------------
Clovis Sena
Itautec.Com Servicos
Suporte Tecnico  Software/Hardware
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Email: cs...@it...
Fone : 0xx81-3421-1126
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Hi,

Not sure whether I sent this already or not, but every time I use a common function (InitCommonControls(), PropertySheet(), etc...), I receive an undefined reference to the function in my linker error msg box. Does anyone know why this could be? Please reply with info, thanks.

Fierytycoon

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I know this might be a bit off the subject but I would like to take full 
control
of a serial port. I plan to use it to control a simple robot. does anyone know
of a library that would allow me to take control of the robot?

(when I say low level, I mean low level. For now the robot will only move 
if it
receives a signal on a certain line. There is no need for error correction)

_________________________________________________________
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I know this might be a bit off the subject but I would like to take full
control of a serial port. I plan to use it to control a simple robot. does 
anyone know
of a library that would allow me to take control of the robot?

(when I say low level, I mean low level. For now the robot will only move 
if it
receives a signal on a certain line. There is no need for error correction)

_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com

hi david,

check the followingen pages. I find them very usefull. I work at the same
problem but I use the more easier parallel port.

mc.
http://www.epanorama.net/links/motorcontrol.html
http://www.beyondlogic.org/
http://www.lvr.com/

This is simple. You can add one of two things at the end of the source file,
right before the return 0;

--------First choice-------
printf( "Press [enter] to quit..." );
getchar();

--------Second Choice-------
system( "pause" );

------------------------------
I prefer the first choice as I use Linux also, and in Linux no pause command
exists. For DOS only apps though, the second choice works fine.
__________
Mike Shoup 
[http://www.psxfanatics.com]
___________________________________________
At 20:06 20/01/02 -0500, Rob Orlando wrote:
>I am just learning c++ and have a question. When I execute a file my
>application only appears for a fraction of a second then disappears. How
>do I get it to stay up so I can read it?
>Jen

Something useful:

Recently, a report by IDC indicated that there are over 2.6 million
professional developers worldwide using C/C++ as their primary language
and over a million professional developers worldwide using Java as their
primary language. This means over 37% of all developers worldwide are
using these languages and the numbers continue to grow.

Ioannis

* Ioannis Vranos
* Programming pages:  <http://www.noicys.d2g.com/>
http://www.noicys.d2g.com
* Alternative URL:  <http://run.to/noicys> http://run.to/noicys

Pre-high schooler needs information on how to start learning programming

Thanks

---------------------------------
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Hi,

When learning to program I wouldn't recommend C or C++ as your first =
stop, as these languages are designed with flexibility and breadth of =
scope in mind, and it's easy to get yourself in trouble. I think it's a =
general consensus, when learning languages, to start with ones that =
enforce a structure upon your programming in the hope that when you move =
to a more relaxed language you carry the good design ideals over.

Another thing that will affect your choice is whether you want to learn =
structured programming or object oriented programming (and possibly any =
other approaches?), and the design philosophies behind them. I have =
found that learning one style doesn't necessarily make it easier to =
learn the other, as they both approach the design and structure of a =
program from a different standpoint, i.e. function centric versus data =
centric (excuse me if I'm using the wrong language to express myself).

I think most people start with a structured language, such as Pascal, =
and move on to something like C, and then optionally learn object =
oriented programming (OOP), with Java or (maybe Smalltalk or another?) =
and move onto C++. I couldn't say what approach is best as it's =
different for everyone.

Once you have made your choice pick up any introductory text on that =
language from your local library and try to pick up the ideas expressed =
within it. I find that when approaching a new language that it's best to =
start with the very basic books that can go into great detail about the =
little stuff, and then work my way up the scale of books, i.e. basic, =
intermediary, experienced, and expert (if you're brave), trying to pick =
up some new insight from each. There are web-sites that contain reviews =
of how good various books are, although you can't go too far wrong with =
most beginner books. If you find in reading a book that it is boring you =
with details that you understand already then either start skimming or =
pick up a slightly more advanced book, however if you find that after =
rereading a paragraph a couple of times you still don't understand what =
is being said then you should try and find a different book that is =
either more basic or uses different wording that may suit you better.

Once you have gained a good understanding of a design pattern then you =
may find that you can skip the easy stuff when learning a new language, =
as the concepts usually cross over from one language to another. It then =
becomes the task of picking up a different syntax more than anything =
else, and then learning what the language makes possible for you from a =
starting point. Most (if not all) languages have standard components (a =
platform) on which all programs you write can be based.

You could say that the essence of programming at it's most basic is to =
be able to look at a task and break it down into a kind of recipe, an =
algorithm, where you specify in detail a sequence of actions that =
describe that task. You need to be able to both, identify the individual =
actions in the task, and the order in which they should occur. Try =
thinking this way about mundane everyday things to learn the frame of =
though. There is more to programming than that, but I find that in the =
end quite often that is what I am doing, although it's usually with more =
abstract tasks like converting one piece of data into another.

I would give an example, but I'm lazy. You could argue that laziness can =
be a good thing in a programmer, but it would take too much time, so I =
won't. ;-D

You will probably find that most books will teach you programming for =
console (text-only) based applications. You will find that learning to =
use a programming language within a specific environment, such as =
Windows, is a different journey altogether, but start at the beginning =
and work your way up and you'll get there in the end.

I hope my little discourse is useful, and that I haven't offended too =
many people with sweeping inaccurate statements.

Looking back, what I have said is probably just the tip of the iceberg. =
I keep on wanting to add another idea or insight to a paragraph, but =
I'll end up writing a book on learning to learn programming if I do =
that!

Jason.

PS: If there's anything I was unclear on that you wish to know more =
about then just e-mail the group and I'm sure that I or someone else =
will fill you in.
  ----- Original Message -----=20
  From: Nicole Mark=20
  To: dev...@li...=20
  Sent: Tuesday, March 05, 2002 12:01 AM
  Subject: [Dev-C++] (no subject)

  Pre-high schooler needs information on how to start learning =
programming

  Thanks

-------------------------------------------------------------------------=
-----
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I learnt on pascal in high school and I just started college
I would suggest pascal as it is a structured and if you are using turbo pascal
it allows you to create objects so you can get to the advanced topics in C &
C++ in this simple language as well as the constructs (the syntax of the 
program
is uncannily similar. Pascal is not case sensitive and is a little kinder 
in terms
of it's error messages.

This should illustrate my point
{hello world in pascal}
Program Hello;
uses crt;

begin
    Clrscr;
    Writeln("Hello World");
    readln;
end.

//Hello world in C
#include <iostream.h>

int main()
{
     cout << "Hello World" << endl;
     system("PAUSE");
     return 0;
}

As you can see the structure is quite similar and thus when you
decide to move up to C or C++ the jump is quite small (all you have
to do is learn different syntax and functions). I regret to say that there are
not many good books on store shelves but you can find quite a few good
tutorials on the internet(or just write me for help).

(P.S. sorry this was so long I just had to put in my two cents)

At 07:01 PM 3/4/2002, you wrote:

>Pre-high schooler needs information on how to start learning programming
>
>Thanks
>
>
>
>Do You Yahoo!?
>Yahoo! Sports - Sign up for 
><http://baseball.fantasysports.yahoo.com/>Fantasy Baseball

_________________________________________________________
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Get your free @yahoo.com address at http://mail.yahoo.com

Dear friends, my email address has changed to no...@ho... .

Regards,
Ioannis

* Ioannis Vranos
* Programming pages:  <http://www.noicys.d2g.com/>
http://www.noicys.d2g.com
* Alternative URL:  <http://run.to/noicys> http://run.to/noicys

dou...@ya...

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Hi List,

can someone explain me how to write a DLL ???
(I have tryed some HowTo's but i want to undertand the difference between
WORD / LPCSTR... anbd how to call them (and get a return ...)

Thanx

Chris

Thread: [Dev-C++] (no subject) (Page 4)

Open Source C & C++ IDE for Windows

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