dev-cpp-users — Dev-C++ users discussion list

[Dev-C++] Derived Classes & Destructors

[David M. <dml...@co...>]

If  I have a class B that inherets from a class A and I create an object 
of type B (call it instance_B).

when instance_B is destroyed is the destructor for class A also called?

If so does the same thing happen for constructors?

Re: FW: [Dev-C++] McAfee GroupShield Alert FOR Virus: W32/Netsky.y@MM

[Scott S. <age...@co...>]

Its just virus spam. A lot of spammers use e-mail addresses of others to 
spread viruses over e-mail. That is what's happening here.

PETER CAMPOS wrote:

> VIRUS ALERT: I RECEIVED THIS EARLIER:
>
>> From: <adm...@yd...>
>> To: <adm...@yd...>, <dev...@li...>
>> Subject: [Dev-C++] McAfee GroupShield Alert
>> Date: Mon, 21 Jun 2004 04:34:52 +0200
>>
>> McAfee GroupShield™ Alert
>>
>> McAfee GroupShield discovered a problem with the following email. See
>> your system administrator for further information.
>>
>> Date/Time sent: 21 jun 2004 04:34:51
>> Subject line: [Dev-C++] failure notice
>> From: dev...@li...
>> To: dev...@li...
>> Action taken: Deleted
>> Virus: W32/Netsky.y@MM
>>
>>
>> Copyright © 1993-2003, Networks Associates Technology, Inc.
>> All Rights Reserved.
>> http://www.mcafeesecurity.com <http://www.mcafeesecurity.com/>
>>
>>
>> -------------------------------------------------------------------------------------- 
>>
>> This message and any files transmitted with it are confidential and 
>> intended solely
>> for the use of the individual or entity to whom they are addressed. 
>> No confidentiality
>> or privilege is waived or lost by any wrong transmission.
>> If you have received this message in error, please immediately 
>> destroy it and kindly
>> notify the sender by reply email.
>> You must not, directly or indirectly, use, disclose, distribute, 
>> print, or copy any
>> part of this message if you are not the intended recipient. Opinions, 
>> conclusions and
>> other information in this message that do not relate to the official 
>> business of
>> Ydilo Advanced Voice Solutions, S.A. shall be understood as neither 
>> given nor endorsed by it.
>> -------------------------------------------------------------------------------------- 
>>
>
>
> _________________________________________________________________
>
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Re: [Dev-C++] File handle

[Zodiaq <zo...@as...>]

Hello Noorez and all Dev-C++ users,

Monday, June 21, 2004, 5:24:58 AM, Noorez wrote as follows:

NK> My program creates files and the names are what ever the user says. How can
NK> I test to see if a file already exists?

Duh, sample from Platform SDK:

HANDLE hFile;
char *szFileName;//this is the file name you want to check
...
...

BOOL bFileExists = TRUE;
hFile = CreateFile(szFileName,             // open some file
                GENERIC_READ,              // open for reading 
                FILE_SHARE_READ,           // share for reading 
                NULL,                      // no security 
                OPEN_EXISTING,             // existing file only 
                FILE_ATTRIBUTE_NORMAL,     // normal file 
                NULL);                     // no attr. template 
 
if( hFile == INVALID_HANDLE_VALUE )
{ 
  if( GetLastError( ) == ERROR_FILE_NOT_FOUND )
      bFileExists = FALSE;
  //in case of other errors file exists but it couldn't be opened for some
  reason, you can check for more system error codes
}
else
  CloseHandle( hFile );
  
-- 
regards, Zodiaq

Re: [Dev-C++] loop error

[Zodiaq <zo...@as...>]

Hello Noorez and all Dev-C++ users,

Monday, June 21, 2004, 7:10:53 AM, Noorez wrote as follows:

NK> The marked loop keeps going on forever. Even if the condition in false

NK>         cin >> goOn;

Do not use this, use rather this:
goOn = cin.get( );
this reads exactly one char, and now you don't need sync...

-- 
regards, Zodiaq

Re: [Dev-C++] loop error

[Per W. <pw...@ia...>]

Think about it for a while:

do {
} while (goOn != 'n' || goOn != 'N' || goOn != 'y' || goOn != 'Y');

When would this expression _ever_ be false?

Assume goOn = 'n':

do {
} while ('n' != 'n' || 'n != 'N' || 'n' != 'y' || 'n' != 'Y');

which is:

do {
} while (false || true || true || true);

which is:

do {
} while (true);

You have to replace || with && for a working expression...

/Per W

On Sun, 20 Jun 2004, Noorez Kassam wrote:

> The marked loop keeps going on forever. Even if the condition in false
>
> int main()
> {
>     cout << "Welcome to the quiz maker.\n";
>     cout << "With this program you can make a Multiple Choice/True or False
> quiz.\n";
>     cout << "We need the name of the quiz file: ";
>     char* quizName = new char;
>     cin.getline(quizName,123);
>     strcat(quizName,".qz");
>     cout << "If filename exists it will be overwritten\n";
>     cout << "Continue [Y\\N]";
>     char goOn;
>     do//this loop
>     {
>         cin >> goOn;
>         cin.sync();
>         if(goOn == 'n' || goOn == 'N')
>           return 0;
>     }while(goOn != 'n' || goOn != 'N' || goOn != 'y' || goOn != 'Y');//keeps
> running even if goOn == 'y' || goOn == 'Y'
>
>     cout << endl << "\nLets start making questions!\n";
>     system("pause");
>     system("cls");
>     Quiz question;
>     char contin;
>     do
>     {
>         question = question.createQuestion();
>         question.writeQuestion(question,Quiz::type,quizName);
>         Quiz::questionNumb = Quiz::questionNumb+1;
>         cout << "\nDo you want to add another question [Y\\N] ";
>         do
>         {
>             cin >> contin;
>
>         }while(!(contin == 'y' || contin == 'Y' || contin == 'n' || contin
> == 'N'));
>
>     }while(contin == 'y' || contin == 'Y');
> }
>
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[Dev-C++] loop error

[Noorez K. <coo...@ho...>]

The marked loop keeps going on forever. Even if the condition in false

int main()
{
    cout << "Welcome to the quiz maker.\n";
    cout << "With this program you can make a Multiple Choice/True or False 
quiz.\n";
    cout << "We need the name of the quiz file: ";
    char* quizName = new char;
    cin.getline(quizName,123);
    strcat(quizName,".qz");
    cout << "If filename exists it will be overwritten\n";
    cout << "Continue [Y\\N]";
    char goOn;
    do//this loop
    {
        cin >> goOn;
        cin.sync();
        if(goOn == 'n' || goOn == 'N')
          return 0;
    }while(goOn != 'n' || goOn != 'N' || goOn != 'y' || goOn != 'Y');//keeps 
running even if goOn == 'y' || goOn == 'Y'

    cout << endl << "\nLets start making questions!\n";
    system("pause");
    system("cls");
    Quiz question;
    char contin;
    do
    {
        question = question.createQuestion();
        question.writeQuestion(question,Quiz::type,quizName);
        Quiz::questionNumb = Quiz::questionNumb+1;
        cout << "\nDo you want to add another question [Y\\N] ";
        do
        {
            cin >> contin;

        }while(!(contin == 'y' || contin == 'Y' || contin == 'n' || contin 
== 'N'));

    }while(contin == 'y' || contin == 'Y');
}

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[Dev-C++] function error

[Noorez K. <coo...@ho...>]

I marked the error with a comment.

void Quiz::writeQuestion(Quiz ques, int type, char* quizName)
{
    ofstream out_file(quizName,ios::noreplace);   //compiler returns error 
that ios::noreplace doesn't exist.

    if(type == 1)
    {
        out_file << "#\n" << questionNumb << ". " << ques.question << '\n';
        out_file << "A. " << ques.answerA << '\n';
        out_file << "B. " << ques.answerB << '\n';
        out_file << "C. " << ques.answerC << '\n';
        out_file << "D. " << ques.answerD << '\n';
        out_file << '#' << ques.actual << '\n';
    }
    if(type == 2)
    {
        out_file << "#\n" << questionNumb <<  ". " << ques.question << '\n';
        out_file << "True or False\n";
        out_file << '#' << ques.actual << '\n';
    }
}

I marked the error with a comment.

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[Dev-C++] File handle

[Noorez K. <coo...@ho...>]

My program creates files and the names are what ever the user says. How can 
I test to see if a file already exists?

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FW: [Dev-C++] McAfee GroupShield Alert FOR Virus: W32/Netsky.y@MM

[PETER C. <nuc...@ms...>]

VIRUS ALERT: I RECEIVED THIS EARLIER:

>From: <adm...@yd...>
>To: <adm...@yd...>, <dev...@li...>
>Subject: [Dev-C++] McAfee GroupShield Alert
>Date: Mon, 21 Jun 2004 04:34:52 +0200
>
>McAfee GroupShield™ Alert
>
>McAfee GroupShield discovered a problem with the following email. See
>your system administrator for further information.
>
>Date/Time sent: 21 jun 2004 04:34:51
>Subject line: [Dev-C++] failure notice
>From: dev...@li...
>To: dev...@li...
>Action taken: Deleted
>Virus: W32/Netsky.y@MM
>
>
>Copyright © 1993-2003, Networks Associates Technology, Inc.
>All Rights Reserved.
>http://www.mcafeesecurity.com <http://www.mcafeesecurity.com/>
>
>
>--------------------------------------------------------------------------------------
>This message and any files transmitted with it are confidential and 
>intended solely
>for the use of the individual or entity to whom they are addressed. No 
>confidentiality
>or privilege is waived or lost by any wrong transmission.
>If you have received this message in error, please immediately destroy it 
>and kindly
>notify the sender by reply email.
>You must not, directly or indirectly, use, disclose, distribute, print, or 
>copy any
>part of this message if you are not the intended recipient. Opinions, 
>conclusions and
>other information in this message that do not relate to the official 
>business of
>Ydilo Advanced Voice Solutions, S.A. shall be understood as neither given 
>nor endorsed by it.
>--------------------------------------------------------------------------------------

_________________________________________________________________
From ‘will you?’ to ‘I do,’ MSN Life Events is your resource for Getting 
Married. http://lifeevents.msn.com/category.aspx?cid=married

[Dev-C++] McAfee GroupShield Alert

[<adm...@yd...>]

McAfee GroupShield=C2=99 Alert=20

McAfee GroupShield discovered a problem with the following email. See
your system administrator for further information.=20

Date/Time sent: 21 jun 2004 04:34:51
Subject line: [Dev-C++] failure notice
From: dev...@li...
To: dev...@li...
Action taken: Deleted
Virus: W32/Netsky.y@MM


Copyright =C2=A9 1993-2003, Networks Associates Technology, Inc.
All Rights Reserved.
http://www.mcafeesecurity.com <http://www.mcafeesecurity.com/> =20


-------------------------------------------------------------------------=
-------------
This message and any files transmitted with it are confidential and inten=
ded solely=20
for the use of the individual or entity to whom they are addressed. No co=
nfidentiality=20
or privilege is waived or lost by any wrong transmission.=20
If you have received this message in error, please immediately destroy it=
=20and kindly=20
notify the sender by reply email.
You must not, directly or indirectly, use, disclose, distribute, print, o=
r copy any=20
part of this message if you are not the intended recipient. Opinions, con=
clusions and=20
other information in this message that do not relate to the official busi=
ness of=20
Ydilo Advanced Voice Solutions, S.A. shall be understood as neither given=
=20nor endorsed by it.=20
-------------------------------------------------------------------------=
-------------

[Dev-C++] Icons

[Noorez K. <coo...@ho...>]

I remember using the .rc file to make icons for your programs but I can't 
remember what it was.
Can someone tell me?

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Re: [Dev-C++] Newbee:Methods and Properties

[Lior W. <we...@st...>]

Hi Thomas,

AFAIK, Dev-C++ simply doesn't have this feature (yet?). I guess you will
have to either change to a different IDE or make us of a documentation (
like everybody else ;).

greets,
Lior


----- Original Message -----
From: "User" <th...@bu...>
To: <dev...@li...>
Sent: Sunday, June 20, 2004 11:08 PM
Subject: Re: [Dev-C++] Newbee:Methods and Properties


> Thanks for the reply, but the reason why I asked for showing me the
> methods is: In other IDE I write an object set a point and the IDE show
> me the methods of these object. Is this also possible in DEV-C++? I
> looking for an feature and I dont know it is built in right now.
>
> Thanks wrote Thomas and wish You a nice Equinox :)
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by The 2004 JavaOne(SM) Conference
> Learn from the experts at JavaOne(SM), Sun's Worldwide Java Developer
> Conference, June 28 - July 1 at the Moscone Center in San Francisco, CA
> REGISTER AND SAVE! http://java.sun.com/javaone/sf Priority Code NWMGYKND
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Re: [Dev-C++] Newbee:Methods and Properties

[User <th...@bu...>]

Thanks for the reply, but the reason why I asked for showing me the 
methods is: In other IDE I write an object set a point and the IDE show 
me the methods of these object. Is this also possible in DEV-C++? I 
looking for an feature and I dont know it is built in right now.

Thanks wrote Thomas and wish You a nice Equinox :)

Re: [Dev-C++] wxWindows

[Siva C. <siv...@ya...>]

hello,

I use wxWindows(wxWidgets) quite often and it all
seems to work fine for me. I downloaded the DevPak
from the following site:
http://michel.weinachter.free.fr/

The sample program(or the Dev-C++ Template) has all
the compiler and linker options rightly set. If you
are interested in image manipulation for jpeg, png or
tiff images, then you should include the suitable
header files and link to your libtiff, libjpeg and
libpng libraries.

To me, your problem looks as if you are not having
proper compiler options set.

Hope this helps.

Siva Chandra.

--- "Axel_Buschhüter" <A_B...@gm...> wrote:
> Hi,
> I whant to use the wxWindows package but can't get
> it to work...
> I think I have istalled all nessesary packeges for
> wxWindows...
> When I open a new wx projekt from the templates and
> try to compile it, it
> will cause many errors !!!
> I also tried to include the two libs (libwx.a &
> libxpm.a) but the same
> errors accure !!!
> The first error, that accures, is a "redeclaration
> of C++ built-in type
> 'bool'" in "wx\defs.h" followed by a huge list of
> other errors...
> 
> Does someone use wxWindows with DevC++ and can tell
> me how to setup it ???
> 
> thx, Acki



	
		
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[Dev-C++] wxWindows

[<A_B...@gm...>]

Hi,
I whant to use the wxWindows package but can't get it to work...
I think I have istalled all nessesary packeges for wxWindows...
When I open a new wx projekt from the templates and try to compile it, it
will cause many errors !!!
I also tried to include the two libs (libwx.a & libxpm.a) but the same
errors accure !!!
The first error, that accures, is a "redeclaration of C++ built-in type
'bool'" in "wx\defs.h" followed by a huge list of other errors...

Does someone use wxWindows with DevC++ and can tell me how to setup it ???

thx, Acki


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Re: [Dev-C++] cpp freshman trying to write program

[Lior W. <we...@st...>]

hi Peter,

instead of
"cin >> a,b,c;"

try
"cin >> a >> b >> c;"

greetings Lior

----- Original Message -----
From: "PETER CAMPOS" <nuc...@ms...>
To: <dev...@li...>
Sent: Sunday, June 20, 2004 6:05 AM
Subject: Re: [Dev-C++] cpp freshman trying to write program


> thanx for responding...
> here is what i have. i declared sum in int. i do not understand why sum =
a
> +b +c does not work.
> i also tried declraring the variables as double.
> the program runs but when adding 3+3+3 i get 3 million.
>
> #include <iostream>
> #include <iomanip>
> using namespace std;
>
> int main(){
>     int a,b,c, sum;
>     cout << "Input three different integers: " << endl;
>     cin >> a,b,c;
>     sum = a+ b+ c;
>     cout << "the sum is: " << sum << endl;
>     return 0;
> }
>
> >From: Per Westermark <pw...@ia...>
> >To: PETER CAMPOS <nuc...@ms...>
> >CC: dev...@li...
> >Subject: Re: [Dev-C++] cpp freshman trying to write program
> >Date: Sun, 20 Jun 2004 01:17:11 +0200 (CEST)
> >
> >Sorry, but we need more information about what you are trying to
> >accomplish. Just adding three numbers ins't so much of a problem :)
> >
> >#include <iostream>
> >
> >using std::cout;
> >
> >int main() {
> >     int a = 10;
> >     int b = 20;
> >     int c = 30;
> >     cout << "The sum is: " << a+b+c << "\n";
> >     return 0;
> >}
> >
> >On Sat, 19 Jun 2004, PETER CAMPOS wrote:
> >
> > > trying to do simple numerical operators....+ - / *
> > > want to add three numbers
> > > been at this all day and i can't figure it out..
> > >
> > > help me out please
> > > peter--nyc
> > >
> > > _________________________________________________________________
> > > Get fast, reliable Internet access with MSN 9 Dial-up - now 3 months
> >FREE!
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> > >
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> > > Learn from the experts at JavaOne(SM), Sun's Worldwide Java Developer
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> >
> >
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[Dev-C++] Newbee:Methods and Properties

[USER <th...@bu...>]

Hallo, my question is: There is an function these show me the methods 
and properties of an object? In Python there is dir(OBJECT) (I know here 
is c++).

Like:
#include <io..
#include <string.h>

main...
string example;

cout<< example.showMeYourProperties();

(I use a short writing :-) ). There is a universal 
"showMeYourProperties"? Or what is an easy way to find out the 
properties and methods?

Thanks Thomas

Re: [Dev-C++] cpp freshman trying to write program

[PETER C. <nuc...@ms...>]

thanx for responding...
here is what i have. i declared sum in int. i do not understand why sum = a 
+b +c does not work.
i also tried declraring the variables as double.
the program runs but when adding 3+3+3 i get 3 million.

#include <iostream>
#include <iomanip>
using namespace std;

int main(){
    int a,b,c, sum;
    cout << "Input three different integers: " << endl;
    cin >> a,b,c;
    sum = a+ b+ c;
    cout << "the sum is: " << sum << endl;
    return 0;
}

>From: Per Westermark <pw...@ia...>
>To: PETER CAMPOS <nuc...@ms...>
>CC: dev...@li...
>Subject: Re: [Dev-C++] cpp freshman trying to write program
>Date: Sun, 20 Jun 2004 01:17:11 +0200 (CEST)
>
>Sorry, but we need more information about what you are trying to
>accomplish. Just adding three numbers ins't so much of a problem :)
>
>#include <iostream>
>
>using std::cout;
>
>int main() {
>     int a = 10;
>     int b = 20;
>     int c = 30;
>     cout << "The sum is: " << a+b+c << "\n";
>     return 0;
>}
>
>On Sat, 19 Jun 2004, PETER CAMPOS wrote:
>
> > trying to do simple numerical operators....+ - / *
> > want to add three numbers
> > been at this all day and i can't figure it out..
> >
> > help me out please
> > peter--nyc
> >
> > _________________________________________________________________
> > Get fast, reliable Internet access with MSN 9 Dial-up – now 3 months 
>FREE!
> > http://join.msn.click-url.com/go/onm00200361ave/direct/01/
> >
> >
> >
> > -------------------------------------------------------
> > This SF.Net email is sponsored by The 2004 JavaOne(SM) Conference
> > Learn from the experts at JavaOne(SM), Sun's Worldwide Java Developer
> > Conference, June 28 - July 1 at the Moscone Center in San Francisco, CA
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> > _______________________________________________
> > Dev-cpp-users mailing list
> > Dev...@li...
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> > https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> >
>
>
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[Dev-C++] The strange action of getchar( ).

[<per...@ya...>]

My program is list belove:
/*  *********************************************** */
#include <stdio.h>
#define MAXVEX    8
main()
{
    char ga[MAXVEX];
    int i, v1, v2, vexnum, edgenum;
    
    
    printf("Input the number of vertex:");
    scanf("%d", &vexnum);
    getchar(); /* sentence 1 */
    printf("Input the information of vertex:");
    for (i = 1; i <= vexnum; i++) {
        ga[i] = getchar();
    }
    printf("Input the number of edge:");    
    scanf("%d", &edgenum); /* sentence 2 */
    printf("The pair of the vertvex in the edge:");
    for (i = 1; i <= edgenum; i++) {
        scanf("%d%d", &v1, &v2);  /* sentence 3 */     
    } 
    system("PAUSE");
}
/* ****************************************** */
     If I remove the sentence 1 from the program.The result is list here:
 
/* *********result 1************************ */
Input the number of vertex:2
Input the information of vertex:ab
Input the number of edge:The pair of the vertvex in the edge:
/* ********************************* */
 
      It seem that the sentence 2 and 3 are not executed.If I put  the sentence 1 to the original place,the program is result this:
 
/* ************result 2********************* */
Input the number of vertex:2
Input the information of vertex:ab
Input the number of edge:1
The pair of the vertvex in the edge:1 2
Please press any key to continue...
/* ********************************* */
 
   This result 2  I think it it is right.Is it the problem caused by the first getchar( ) where is sentence 1? Why I remove the sentence 1 will bring the issue?Up to now I still don't know why.
    Thanks,
    Bruce .J  Sam

 
 
 
 
   
 



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Re: [Dev-C++] cpp freshman trying to write program

[Per W. <pw...@ia...>]

Sorry, but we need more information about what you are trying to
accomplish. Just adding three numbers ins't so much of a problem :)

#include <iostream>

using std::cout;

int main() {
    int a =3D 10;
    int b =3D 20;
    int c =3D 30;
    cout << "The sum is: " << a+b+c << "\n";
    return 0;
}

On Sat, 19 Jun 2004, PETER CAMPOS wrote:

> trying to do simple numerical operators....+ - / *
> want to add three numbers
> been at this all day and i can't figure it out..
>
> help me out please
> peter--nyc
>
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[Dev-C++] cpp freshman trying to write program

[PETER C. <nuc...@ms...>]

trying to do simple numerical operators....+ - / *
want to add three numbers
been at this all day and i can't figure it out..

help me out please
peter--nyc

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[Dev-C++] Doxygen with Dev-C++

[Siva C. <siv...@ya...>]

Hello all,

Is there a way to use doxygen with Dev-C++.
I do not want to write my own make files cause Dev-C++
does a good job with that. 

TIA,

Siva Chandra


	
		
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[Dev-C++] Re: Newbie: setting vars with for loop trouble.

[Ray K. <ray...@my...>]

Hmm...three of us have responded now, and we all
seem to have interpreted your question differently.

Do any of our responses seem to fit what you were
looking for? If not, could you please rephrase
and/or elaborate upon the question?

[Dev-C++] Re: Newbie: setting vars with for loop trouble.

[Lior W. <we...@st...>]

"Dane Ensign" wrote:
> In the function I need to use a for loop to increment through my six
> dice variables that I set as global variables as:
> die1, ..., die6. I cant figure out how to append the value of my
> for-loop variable to the name of my "die" variable, so I can set it?
> Is there a better way to do this? Im not supposed to use an array for
> this assignment, but I am supposed to use a loop.

Hi Dane,

 I din't get your original post, but if understand the above correctly, your
exercise looks much like an exercise I once had to explain to some students.
As to your question regarding "appending" (and to some rather misleading
replies you got to it): yes, you can append the "for value" to a variable
name, but the result would be a string, and not a variable name you could
use to access variable values.
I would say that the solution your teachers want to see would use either a
"switch" statement or, if you havn't learned switchs yet, six "if"
statements. Either way its not very pretty, but then again its supposed to
teach you something, not to be pretty ;)

Another hint: if you have to iterate more then 6 times in your for-loop you
might want to consider using the modulo operator "%".

 Hope that helped a bit

 Lior


dev...@li...

[Dev-C++] Re: Newbie: setting vars with for loop trouble.

[Ray K. <ray...@my...>]

"Dane Ensign" wrote:
> In the function I need to use a for loop to increment through my six
> dice variables that I set as global variables as:
> die1, ..., die6. I cant figure out how to append the value of my
> for-loop variable to the name of my "die" variable, so I can set it?
> Is there a better way to do this? Im not supposed to use an array for
> this assignment, but I am supposed to use a loop.

If this is for a homework assignment, shouldn't you be figuring out
the solution on your own?  I will give you a pointer: What you wish
to do is called "string concatenation", and there is a function in
the standard library that handles it. (Actually, there are two
functions in the standard library that would work here. I leave
finding them to you.)