C / C++ / MFC

can recursive functions be inline functions?

17-Mar-06 0:54

Hi,

I don't know if it will help but try:
Graphviz http://www.graphviz.org/.

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

Re: help requested

thierrypp17-Mar-06 1:42

thierrypp

17-Mar-06 1:42

thanks a lot but in fact I downloaded it and proceeded as mentionned but cannot plot any graph...

Thanks ,

Regards

namaskaaram16-Mar-06 23:59

namaskaaram

16-Mar-06 23:59

can recursive functions be inline functions?

Rajesh R Subramanian17-Mar-06 0:15

Rajesh R Subramanian

17-Mar-06 0:15

The compiler might not know the number of recursions that can happen during compile time. Neither can it decide it by itself. That information will be available at runtime only. So the compiler will *not* be able to generate the inline code at compile time.

Rajesh R. Subramanian

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

namaskaaram17-Mar-06 0:28

namaskaaram

17-Mar-06 0:28

yeah!.....exactly what i had in mind.....but if somehow if it could,it did be more efficient!.....it seemz recursive functions are slightly slower than functions that are iterated.....
thatz when i thought of inline.....

anywayz!.....thanx for the reply

cheerz!

Rajesh R Subramanian17-Mar-06 0:57

Rajesh R Subramanian

17-Mar-06 0:57

You're welcome

Rajesh R. Subramanian

You have an apple and me too. We exchange those and We have an apple each.
You have an idea and me too. We exchange those and We have two ideas each.

GetLocalTime and GetCurrentTime in Managed App(Windows form.net)---VC7

Stephen Hewitt17-Mar-06 0:18

Stephen Hewitt

17-Mar-06 0:18

inline is only a suggestion to the compiler. There are things you can do in code which will result in a "vanilla" function even though it's marked inline, such as taking its address. Another common one is recursive functions.

Steve

luhfluh16-Mar-06 23:40

luhfluh

16-Mar-06 23:40

Hi, regarding an earlier post, suggestions were given as to how to display Locale current time(by using the GetLocalTime n GetCurrentTime). It did work in a single form (managed Application).

My problem now is as I tuned the code and used it in my intended managed Application, i have 4 errors and 4 warnings which I understand is as a result of an ambiguity in an ObjectData; the ATLCom.h header and some other header (apparently in the managed App) are conflicting....fine.

So how can one go about displaying the date and time in a managed App (windows forms .net App)?

Please Help y'all.
Regards....

Visualisers in other programmes

RichardS16-Mar-06 23:26

16-Mar-06 23:26

Hi All,

The VS2005 visualisers look great in VS, but is there a way of using the technologies (e.g. the little windows with + buttons that open without a mouse click, etc)?

And if so, how?

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

C Question

<color>Aljechin 16-Mar-06 23:03

16-Mar-06 23:03

I have two C source files. One does not have main function, but it has a function called MyFunction(). I want to use this function into the other c file. How do I do it? I know i must create a header file (which defines MyFunction), and include it. I do not know how do I link it. (I am using TURBO C). It compiles, but when I try to make the .exe file, I get an error called Undefined symbo, _MyFunction. Please help me.

Regards

Aljechin Alexander Rose | [Rose]

RichardS16-Mar-06 23:24

16-Mar-06 23:24

Hi Aljechin,

Assuming file 1 is a.c and file 2 is b.c (with MyFunction() in b.c). Then you need to create a header file like b.h. Inside the b.h define a prototype of your function (e.g. void MyFunction (void);)

Then make sure that the b.h is included in each a.c and b.c. Then compilte both files.

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

<color>Aljechin 16-Mar-06 23:27

16-Mar-06 23:27

Halo Richard,

Before posting this i had done exactly the same. But there is a linker error:

Undefined symbol _MyFunction in a.c

can you please help me with a small example? it will take a minute for u but is trivially important for me now Frown | :(

Thanks
Aljechin

Sebastian Schneider16-Mar-06 23:32

Sebastian Schneider

16-Mar-06 23:32

File a.c:

<br />
#include "a.h"<br />
int myFunc(int a, int b)<br />
{<br />
   return a + b;<br />
}<br />
<br />
<br />

File a.h:

<br />
#ifndef _a_h_<br />
#define _a_h_<br />
<br />
int myFunc(int a, int b);<br />
<br />
#endif<br />
<br />
<br />

File b.c:

<br />
#include "a.h"<br />
<br />
int main( int argc, char* argv[] )<br />
{<br />
   int a = 15;<br />
   int b = 30;<br />
   int c = myFunc(a, b); // c = 45!<br />
   return 0;<br />
}

Cheers,
Sebastian

--
Contra vim mortem non est medicamen in hortem.

-- modified at 5:33 Friday 17th March, 2006

RichardS16-Mar-06 23:38

16-Mar-06 23:38

Hi Sebastian,

Just watch out, some C compilers don't like the // comments.

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

RichardS16-Mar-06 23:36

16-Mar-06 23:36

Hi,

First check that you are compiling both files. And if you are, make sure that you are compiling them in C mode.

a.c:

#include "b.h"
int main (int, char**)
{
   MyFunction ();
   return 0;
}

b.h:

#ifndef __B_H__
#define __B_H__
void MyFunction (void);
#endif /* __B_H__ */

b.c:

#include "b.h"
void MyFunction (void)
{
}

Hope this helps,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

<color>Aljechin 16-Mar-06 23:59

16-Mar-06 23:59

RichardS wrote:
First check that you are compiling both files. And if you are, make sure that you are compiling them in C mode.

How do i do this sir? Actually I am using Turbo C. I know i have to use the command line compiler (tcc.exe) for this, i do not know how to compile these files altogether. I want an object file of b.c and the functionality in that. Please help me.

Regards,
Aljechin

RichardS17-Mar-06 0:05

17-Mar-06 0:05

Unfortunately I used Turbo C very long time ago, just after Hannibal crossed the Alps. If you are using tcc.exe, I would then assume that the files are being compiled into C. The next thing to check is if you are getting object files a.o (or a.obj) and b.o (or b.obj). If you are not, you are not compiling both files. If you are, then check that you are linking all the objects together.

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

<color>Aljechin 17-Mar-06 0:08

17-Mar-06 0:08

RichardS wrote:
If you are, then check that you are linking all the objects together.

Sir, I have both the object files, a.obj and b.obj. How do I link them together? Please help me.

Regards,
Aljechin Alexander.

RichardS17-Mar-06 0:12

17-Mar-06 0:12

Umm, your first post said:

Aljechin It compiles, but when I try to make the .exe file, I get an error called Undefined symbo, _MyFunction.

How where you making a .exe?

By making a .exe file, you are linking the code.

regards,
Rich

p.s. It might help to see the command lines that you are using.

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

<color>Aljechin 17-Mar-06 0:19

17-Mar-06 0:19

Sir, I said I *tried* to make an exe file. I get this error when I tried to make the exe. Before making the exe itself the error comes from the linker. Frown | :(

Its actually for the exact command for which I am looking, i think. Can you please tell me that? I think its something like

tcc a.c, a.obj b.obj

Aljechin Alexander.

RichardS17-Mar-06 0:37

17-Mar-06 0:37

Ok. I think what you have done is slightly incorrect. With that command, tcc will create the a.obj and b.obj but the obj's will be identical (i.e. it will compile a.c into both a.obj and b.obj).

Try:

tcc a.c a.obj

for a.c and:

tcc b.c b.obj

for b.c.

Now to link there should be a TLINK.exe? Try:

tlink a.obj b.obj

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook