Re: Please HELP - C / C++ / MFC Discussion Boards

irs9723-Dec-06 19:34

23-Dec-06 19:34

I am a new student. I have been through two classes, intro to programing in C++ and then C++ data structures. I bought a book on the STL Library called the Standard Template Library. They said the book was for beginners but I can't understand any of it. Does anyone know where I can find a book for BEGINNERS that is easy to understand.

Thanks
IRS

Re: Please HELP

Waldermort23-Dec-06 19:55

Waldermort

23-Dec-06 19:55

Perhaps you should have read a little of the book before buying it. The best person to ask about which book to buy is your teacher. He/She will know of a good book that is suitable for use along side his/her course.

Re: Please HELP

irs9723-Dec-06 19:59

irs97

23-Dec-06 19:59

Thats a good point but unfortuantely I live in Idaho, North Idaho to be exact in a little college town. We dont even have a book store. So I had to purchase it online. The only thing I could read was the descriptions. While you make a good point, my resources are extremely limited. I did ask my teacher he said he didnt know. Hints why I posted this message Smile | :)

thanks
irs

Re: Please HELP

CPallini23-Dec-06 22:46

CPallini

23-Dec-06 22:46

Standard Template Library is a powerful but quite advanced topic. Do you really need to use STL or you only need a good understanding of C++ (in fact a good understanding of C++ is at least recommended before starting to learn STL). There are also free resources online (e.g. Bruce Eckel's books).

By the way, it's a long time I wish to spend a holyday in Idaho (I live in Italy) any hint?

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Please HELP

irs9724-Dec-06 4:49

irs97

24-Dec-06 4:49

I have a pretty good understanding of C++. I have had three classes and written quite a bit of code. I just wish there was a book that broke it down easier than what I have.

As far as Idaho goes, you dont want to spend a Christmas here, its about 15 degrees out and I am looking at a few feet of snow. This is just a great enviroment for school cause there is nothing to do. I am from Tampa Bay, Florida. Couldn't get much done there Smile | :)

in the battle between a rock and a stream, the stream will always prevail, not through strength but through persistance

Re: Please HELP

CPallini24-Dec-06 5:38

CPallini

24-Dec-06 5:38

irs97 wrote:
I have a pretty good understanding of C++.

Lucky guy! Then you have a good knowledge of templates and STL cannot be so hard to understand... Smile | :)

irs97 wrote:
I have had three classes

Lucky guy again! Usually one have to code several hundreds before being comfortable with. Smile | :)

To understand STL have a look to MSDN library, there are a lot of good examples.

irs97 wrote:
As far as Idaho goes, you dont want to spend a Christmas here, its about 15 degrees out and I am looking at a few feet of snow. This is just a great enviroment for school cause there is nothing to do. I am from Tampa Bay, Florida. Couldn't get much done there

I'm sorry about that. I wish you a merry Christmas and hope you'll be back in Tampa asap.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Please HELP

irs9724-Dec-06 6:11

irs97

24-Dec-06 6:11

Well my your last reply, I can tell that I dont have enough experience. In my data structures class we simply briezed over templates. He told us that stl created templated and we really didnt need to know much about them. Maybe I do need to get some more experience. I was under the assumption that STL was suppose to make things easier. I guess I could be wrong. I thought lists, maps, ques, deques, vectors, linked lists, trees, were already created for you to use. No I am not that lucky my friend, I am just a beginner, by no means and I am great, I am just learning and searching for all the knowledge I can find.

IRS

In the battle between a rock and a stream, the stream will always prevail, not through strength but through persistance

Re: Please HELP

CPallini24-Dec-06 6:31

CPallini

24-Dec-06 6:31

First, I must apologize to you for my rudeness...

irs97 wrote:
I was under the assumption that STL was suppose to make things easier.

This is true but you must know a bit of templates.

irs97 wrote:
I thought lists, maps, ques, deques, vectors, linked lists, trees, were already created for you to use.

This is also true, but again, you must know a bit of templates.

Have a look to examples. STL documentation is quite too formal, while examples help you in practice.

Hope that helps.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Please HELP

Michael Dunn23-Dec-06 20:18

Michael Dunn

23-Dec-06 20:18

I don't have any book reccos but you could check out the STL section[^] here on CP.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Ford, what's this fish doing in my ear?

Re: Please HELP

Christian Graus23-Dec-06 21:40

Christian Graus

23-Dec-06 21:40

*grin* That's just what I said.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

How To Display My Dialog Form?

Nonreturn23-Dec-06 10:57

Nonreturn

23-Dec-06 10:57

Hi friends. I'm a new programmer. In an application, when i click About menu, i want the my About.h dialof form to display. In the MSND library, i saw such an example to display user defined dialogs;

{

Form ^ f = gcnew Form();
f->ShowDialog();
}

And i changed this code to display my About.h form dialog such as;

{

Form ^ About = gcnew Form();
About->ShowDialog();
}

But, i still see the same empty dialog instead of my About.h form. So how can i display this dialog when i click About menu ?

Re: How To Display My Dialog Form?

Michael Dunn23-Dec-06 17:10

Michael Dunn

23-Dec-06 17:10

Ask in the C++/CLI forum[^]

--Mike--
Visual C++ MVP Cool | :cool:

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Ford, what's this fish doing in my ear?

Re: How To Display My Dialog Form?

levelboy25-Dec-06 20:57

levelboy

25-Dec-06 20:57

hope this helps, there, you're not creating an "about form", you're creating an empty form that is named "About". if you want to create an about form you'll probably need something like this:
<prv>
CAboutForm^ About=gcnew CAboutForm();
About->ShowDialog();

hope this helps

CrackUrl

Waldermort23-Dec-06 7:09

Waldermort

23-Dec-06 7:09

I want to extract the domain name from a url string. I know there is a function in wininet.dll InternetCrackUrl but I really don't want to link against the whole library to use just a single function. I tried passing the url into splitpath but it can't handle it ( the domain name is return as part of the path ).

Does anybody know of any other functions which may do the job?

Re: CrackUrl

Jeffrey Walton23-Dec-06 7:25

Jeffrey Walton

23-Dec-06 7:25

Do you want the functionality of flags ICU_ESCAPE or ICU_DECODE?

Jeff

Re: CrackUrl

Waldermort23-Dec-06 7:41

Waldermort

23-Dec-06 7:41

not really, I just want to extract the "www.google.com" from "http://www.google.com/search?url+split". For now at least, maybe later I will want to add more functionality.

Re: CrackUrl

Waldermort23-Dec-06 7:56

Waldermort

23-Dec-06 7:56

It doesn't matter, I threw together a small function to do the job. It'll do for now at least.

bool SplitUrl( LPCSTR szUrl, LPSTR szLoc, UINT uLocSize )
{
	UINT uCount = 0;

	while ( *szUrl != '/' ){
		if ( !*(szUrl) )
			return false;
		szUrl++;
	}

	if ( *(++szUrl) != '/' )
		return false;

	szUrl++;

	while ( *szUrl != '/' && uCount < uLocSize-1 ){
		if ( !*(szUrl) )
			return false;
		szLoc[uCount] = *szUrl;
		szUrl++;
		uCount++;
	}

	szLoc[uCount] = 0;

	return uCount > 0;
}

Re: CrackUrl

Cristian Amarie25-Dec-06 5:50

Cristian Amarie

25-Dec-06 5:50

You can always use dynamic loading thru LoadLibrary + GetProcAddress to resolve the function at runtime when you need to use it (perhaps to isolate all in a small class to cache this would be even better).

function definition inside and outside class

rp_suman23-Dec-06 3:45

rp_suman

23-Dec-06 3:45

What is the difference between a function definition is in outside of a class in .cpp file and defined inside of a class in .h file when the header file is included by some other .cpp implementation file?
Thanks & Regards,
Suman

Re: function definition inside and outside class

CPallini23-Dec-06 5:15

CPallini

23-Dec-06 5:15

When you define a method inside the class (i.e. making declaration and definition at the same time), you're suggesting the compiler to inline expand inline that method. However, AFAIK, that's only a hint: the compiler may ignore your suggestion.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: function definition inside and outside class

prasad_som23-Dec-06 18:42

prasad_som

23-Dec-06 18:42

By defining function inside class body, you are hinting compiler to make it inline. You may have look at this[^].

You can make function inline defining outside class body, by using keyword inline.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Thanks

rp_suman23-Dec-06 22:33

rp_suman

23-Dec-06 22:33

Thank you very much for the great help from you both!!
Thanks & Regards,
Suman

Bit Count Assembly Instruction

Jeffrey Walton23-Dec-06 3:04

Jeffrey Walton

23-Dec-06 3:04

Hi All,

I can't seem to find a reference for the bit count instruction on a Pentium. I found the Bit Scan instructions, but not the Bit Count instruction. Is this not available on a Pentium (it's been about 4 years for me - I may be confusing RISC and CISC?)?

For example, EAX = 0x0000000A ( 1010 binary )
Bit Count = 2

Intel Pentium Instruction Set Reference Manual[^]

Jeff

Re: Bit Count Assembly Instruction

CPallini23-Dec-06 3:29

CPallini

23-Dec-06 3:29

In fact, I think there isn't.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Bit Count Assembly Instruction

Jeffrey Walton23-Dec-06 4:56

Jeffrey Walton

23-Dec-06 4:56

Thanks. It stinks getting old. You forget what you forgot...

Jeff

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