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Setting Structure Defaults

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  Setting Structure Defaults mrc2323@cox.net (Mike Copeland) - 2011-08-06 11:33 -0700
    Re: Setting Structure Defaults Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-06 15:31 -0400
      Re: Setting Structure Defaults mrc2323@cox.net (Mike Copeland) - 2011-08-06 22:55 -0700
        Re: Setting Structure Defaults "Balog Pal" <pasa@lib.hu> - 2011-08-07 08:46 +0200
        Re: Setting Structure Defaults "Bo Persson" <bop@gmb.dk> - 2011-08-07 12:30 +0200
          Re: Setting Structure Defaults mrc2323@cox.net (Mike Copeland) - 2011-08-07 09:17 -0700
            Re: Setting Structure Defaults Geoff <geoff@invalid.invalid> - 2011-08-07 10:00 -0700
              Re: Setting Structure Defaults Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-07 13:17 -0400
            Re: Setting Structure Defaults Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-07 13:16 -0400

#8506 — Setting Structure Defaults

   I'm trying to create a structure and populate it with default values.  
Below is my attempt, but it fails (badly) to compile.  What did I do 
wrong here?  How might I fix this?  TIA

#define ERLIMIT	5
struct ERMENU
{
   string title;
   short  xAxis, yAxis;
   short  titleLen, dataLen;
   short  linkPrior, linkNext;
   short  option;
   WORD   dispAttr;
   short  erHead, erTail, erCurrent;
} erMenu[ERLIMIT] = 
   {
    {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
   };

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#8510

On 8/6/2011 2:33 PM, Mike Copeland wrote:
>     I'm trying to create a structure and populate it with default values.
> Below is my attempt, but it fails (badly) to compile.  What did I do
> wrong here?  How might I fix this?  TIA
>
> #define ERLIMIT	5
> struct ERMENU
> {
>     string title;
>     short  xAxis, yAxis;
>     short  titleLen, dataLen;
>     short  linkPrior, linkNext;
>     short  option;
>     WORD   dispAttr;
>     short  erHead, erTail, erCurrent;
> } erMenu[ERLIMIT] =
>     {
>      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
>     };
>

This is covered by FAQ 5.8.  Please read the FAQ before posting.

V
-- 
I do not respond to top-posted replies, please don't ask

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#8529

In article <j1k4rr$ujc$1@dont-email.me>, v.bazarov@comcast.invalid 
says...
> On 8/6/2011 2:33 PM, Mike Copeland wrote:
> >     I'm trying to create a structure and populate it with default values.
> > Below is my attempt, but it fails (badly) to compile.  What did I do
> > wrong here?  How might I fix this?  TIA
> >
> > #define ERLIMIT	5
> > struct ERMENU
> > {
> >     string title;
> >     short  xAxis, yAxis;
> >     short  titleLen, dataLen;
> >     short  linkPrior, linkNext;
> >     short  option;
> >     WORD   dispAttr;
> >     short  erHead, erTail, erCurrent;
> > } erMenu[ERLIMIT] =
> >     {
> >      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
> >     };
> >
> This is covered by FAQ 5.8.  Please read the FAQ before posting.

   I don't understand.  The FAQ reference (5.8) has nothing to do with 
my query here, and examining the FAQ doesn't lead me to a resolution of 
my problem.  I'm seeking an understanding of how to initialize a 
structure element that is declared as basic::string, which is the root 
cause of my compile errors.
   I can't find anything in the FAQ that deals with this.  8<{{

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#8530

"Mike Copeland" <mrc2323@cox.net> az alábbiakat írta a következő 
hírüzenetben: MPG.28a7d6d1917d30d9896c5@news.eternal-september.org...
> In article <j1k4rr$ujc$1@dont-email.me>, v.bazarov@comcast.invalid
> says...
>> On 8/6/2011 2:33 PM, Mike Copeland wrote:
>> >     I'm trying to create a structure and populate it with default 
>> > values.
>> > Below is my attempt, but it fails (badly) to compile.  What did I do
>> > wrong here?  How might I fix this?  TIA
>> >
>> > #define ERLIMIT 5
>> > struct ERMENU
>> > {
>> >     string title;
>> >     short  xAxis, yAxis;
>> >     short  titleLen, dataLen;
>> >     short  linkPrior, linkNext;
>> >     short  option;
>> >     WORD   dispAttr;
>> >     short  erHead, erTail, erCurrent;
>> > } erMenu[ERLIMIT] =
>> >     {
>> >      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>> >      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>> >      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>> >      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>> >      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
>> >     };
>> >
>> This is covered by FAQ 5.8.  Please read the FAQ before posting.
>
>   I don't understand.  The FAQ reference (5.8) has nothing to do with
> my query here, and examining the FAQ doesn't lead me to a resolution of
> my problem.  I'm seeking an understanding of how to initialize a
> structure element that is declared as basic::string, which is the root
> cause of my compile errors.
>   I can't find anything in the FAQ that deals with this.

I bet there is a section about how-to-post-code, that you clearly did not 
follow. :-(
Anyway,

#include <string>

struct S
{
// const char * s;
 std::string s;
 int i;
} o[2] =
{
 { "a", 1 },
 { "b", 2 },
};

complies fine in cameau, so the best bet is that you messed up somewhere 
else.

And your code only get complaints on WORD and LONROM too.

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#8533

Mike Copeland wrote:
> In article <j1k4rr$ujc$1@dont-email.me>, v.bazarov@comcast.invalid
> says...
>> On 8/6/2011 2:33 PM, Mike Copeland wrote:
>>>     I'm trying to create a structure and populate it with default
>>> values. Below is my attempt, but it fails (badly) to compile.
>>> What did I do wrong here?  How might I fix this?  TIA
>>>
>>> #define ERLIMIT 5
>>> struct ERMENU
>>> {
>>>     string title;
>>>     short  xAxis, yAxis;
>>>     short  titleLen, dataLen;
>>>     short  linkPrior, linkNext;
>>>     short  option;
>>>     WORD   dispAttr;
>>>     short  erHead, erTail, erCurrent;
>>> } erMenu[ERLIMIT] =
>>>     {
>>>      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>>>      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>>>      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>>>      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>>>      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
>>>     };
>>>
>> This is covered by FAQ 5.8.  Please read the FAQ before posting.
>
>   I don't understand.  The FAQ reference (5.8) has nothing to do
> with my query here, and examining the FAQ doesn't lead me to a
> resolution of my problem.  I'm seeking an understanding of how to
> initialize a structure element that is declared as basic::string,
> which is the root cause of my compile errors.
>   I can't find anything in the FAQ that deals with this.  8<{{

It's a meta reference - One of the points of 5.8 is that you should 
tell us WHAT message you get from the compiler.

And you just did!


Bo Persson

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#8539

In article <9a77qdFn1oU1@mid.individual.net>, bop@gmb.dk says...
> Mike Copeland wrote:
> > In article <j1k4rr$ujc$1@dont-email.me>, v.bazarov@comcast.invalid
> > says...
> >> On 8/6/2011 2:33 PM, Mike Copeland wrote:
> >>>     I'm trying to create a structure and populate it with default
> >>> values. Below is my attempt, but it fails (badly) to compile.
> >>> What did I do wrong here?  How might I fix this?  TIA
> >>>
> >>> #define ERLIMIT 5
> >>> struct ERMENU
> >>> {
> >>>     string title;
> >>>     short  xAxis, yAxis;
> >>>     short  titleLen, dataLen;
> >>>     short  linkPrior, linkNext;
> >>>     short  option;
> >>>     WORD   dispAttr;
> >>>     short  erHead, erTail, erCurrent;
> >>> } erMenu[ERLIMIT] =
> >>>     {
> >>>      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >>>      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >>>      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >>>      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
> >>>      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
> >>>     };
> >>>
> >> This is covered by FAQ 5.8.  Please read the FAQ before posting.
> >
> >   I don't understand.  The FAQ reference (5.8) has nothing to do
> > with my query here, and examining the FAQ doesn't lead me to a
> > resolution of my problem.  I'm seeking an understanding of how to
> > initialize a structure element that is declared as basic::string,
> > which is the root cause of my compile errors.
> >   I can't find anything in the FAQ that deals with this.  8<{{
> 
> It's a meta reference - One of the points of 5.8 is that you should 
> tell us WHAT message you get from the compiler.
> 
> And you just did!

   My apologies.  I received a maximum number of C2440 errors with this 
code (VS6.0 on Windows XP), but I thought posting a compiler/system-
specific error was/is greatly frowned upon here.  Also, regarding the 
FAQ 5.8, since I couldn't compile this code (which was cut & pasted from 
my program), I couldn't post working code.  8<{{
   I was only trying to find out how to write the string-initialize 
code, and I thought my query was complete and appropriate.  <sigh...>

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#8540

#include <windows.h> /* for definition of WORD */
#define LONORM 1 /* application specific constant? */

#define ERLIMIT	5

struct ERMENU
{
   std::string title; /* changed from string to std::string */
   short  xAxis, yAxis;
   short  titleLen, dataLen;
   short  linkPrior, linkNext;
   short  option;
   WORD   dispAttr;
   short  erHead, erTail, erCurrent;
} erMenu[ERLIMIT] = 
   {
    {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
    {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
   };

Works fine in VS2010.

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#8542

On 8/7/2011 1:00 PM, Geoff wrote:
> #include<windows.h>  /* for definition of WORD */
> #define LONORM 1 /* application specific constant? */
>
> #define ERLIMIT	5
>
> struct ERMENU
> {
>     std::string title; /* changed from string to std::string */
>     short  xAxis, yAxis;
>     short  titleLen, dataLen;
>     short  linkPrior, linkNext;
>     short  option;
>     WORD   dispAttr;
>     short  erHead, erTail, erCurrent;
> } erMenu[ERLIMIT] =
>     {
>      {"category1", 2, 4, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category2", 2, 5, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category3", 2, 6, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category4", 2, 7, 9, 1, 0, 0, 0, LONORM, 0, 0, 0},
>      {"category5", 2, 8, 9, 1, 0, 0, 0, LONORM, 0, 0, 0}
>     };
>
> Works fine in VS2010.

No shit.  Now try it with VS v6.0...

V
-- 
I do not respond to top-posted replies, please don't ask

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#8541

On 8/7/2011 12:17 PM, Mike Copeland wrote:
> [..]   I received a maximum number of C2440 errors with this
> code (VS6.0 on Windows XP), but I thought posting a compiler/system-
> specific error was/is greatly frowned upon here.  Also, regarding the
> FAQ 5.8, since I couldn't compile this code (which was cut&  pasted from
> my program), I couldn't post working code.  8<{{
>     I was only trying to find out how to write the string-initialize
> code, and I thought my query was complete and appropriate.<sigh...>

VS6.0 is not Standard compliant by any stretch of the imagination. 
Nobody in their right mind uses that compiler any longer.  Please find a 
better compiler and port to it (unless you really *have* to stick with 
that fossil due to some 3rd party dependency, or whatever).  AFA 
std::string initialization from a string literal (double-quoted stuff in 
your program), you will have to use this form:

     struct BLAH { std::string s; } blah[] = { std::string("blah") };

because the compiler is so bad that it can't understand that it needs to 
use a specific constructor.

V
-- 
I do not respond to top-posted replies, please don't ask

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