Re: How to code - C / C++ / MFC Discussion Boards

snoop8220-Sep-07 0:06

20-Sep-07 0:06

How to create several files of integers to be used to test sorting.several sizes, for example, size 20, 200, and 2000. Make files that are in order, in reverse order, in random order, and partially in order. By keeping all this test data in files (rather than generating it with random numbers each time the program is run), the same data can be used to test different sorting methods, and hence it will be easier to compare their performance.

the code template

template<class t="">
void insertionsort(T data[],int n)
{
for(int i=1,j;i<n;i++){
t tmp="data[i];
for(j=i;j">0&&tmp

Re: How to code

Nelek20-Sep-07 0:34

Nelek

20-Sep-07 0:34

The easiest way is to use an empty project with Doc/View arquitecture.

In the CMyDoc::Serialize (it comes by default using the assistant) you can code directly your random functions to save the ints that you want.

If not...

You should use the CFile,

CFile f;
if (!f.Open ("FileName.ext", CFile::modeRead))
{
//Read your ints
}

if (!f.Open ("FileName.ext", CFile::modeWrite))
{
//Write your ints
}

Sample to write numbers

void CMyView::WriteFile (CFile* file)
{
int Array[LIM];

for (int i = 0; i < lim; i++)
{
//fill with random
}

int* pBuf;
pBuf = &Array[0];
file->Write (pBuf, sizeof (Array));
}

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Re: How to code

snoop8220-Sep-07 0:40

snoop82

20-Sep-07 0:40

thank you M.D.V...well but I have here no idea how to start the coding..can you please do teach me

Re: How to code

Nelek20-Sep-07 1:47

Nelek

20-Sep-07 1:47

Sorry, but Im not going to make your job. I have given you the idea to do it. You should now try it by yourself and post when you have problems, we will help you. But you hav to show you are trying it.

Re: How to code

snoop8220-Sep-07 2:15

snoop82

20-Sep-07 2:15

Thanks i understand you are guiding me,but it this correct what i'm doing now.Please have a look and if there is mistakes please correct me.
Thank you.

#include<iostream.h>
#include<ctime>
#include<math.h>

CFile f;
if (!f.Open ("FileName.ext", CFile::modeRead))
{
//Read your ints
}

if (!f.Open ("FileName.ext", CFile::modeWrite))
{
//Write your ints
}

void CMyView::WriteFile (CFile* file)
{
int Array[LIM];

for (int i = 0; i < lim; i++)
{
//fill with random
}

int* pBuf;
pBuf = &Array[0];
file->Write (pBuf, sizeof (Array));
}

void insertionsort(T data[],int n)

{
for(int i=1,j;i
T tmp=data[i];
for(j=i;j>0&&tmp
data[j]=data[j-1];
data[j]=tmp;
}
}

void main()
{
int x, y, z;
int arr[];

getArray (arr, n);

cout<<"The array before sorting was"<<endl;

="" for="" (x="0;" x<n;="" x++)
=""

="" {
="" cout<<arr[x]<<'="" ';
="" }
="" cout<<endl;

="" insertionsort="" (arr,="" n);

="" cout<<"the="" array="" after="" sorting="" was="" (assending)"<<endl;
="" (y="0;" y<n;="" y++)
="" cout<<arr[y]<<'="" (decending)"<<endl;
="" (z="n;" z="">=0; z--)

{
cout<

Re: How to code

Nelek20-Sep-07 3:05

Nelek

20-Sep-07 3:05

Just some advices...

1) Use "< pre > your code < /pre >" for snippets of code biggers than some lines, and "< code > your sentence < /code >" to highlite sentences in red (as I made). The first tags make:

//this is an example
//about < pre > tags

it would be easier for us to read

2) The best way to do it is... you make your program, you compile in your computer. Try to solve your errors (can be missings ; or easy things) and... if you don't know what is happening... THEN write us the error that your compiler says, and the piece of code where the compiler sends you when you double click on the error.

If we need more information... we will ask you to give us more code or to answer concrete questions we make

About your code...

I have write a guide, not a functional code... // This 2 shlashes means that, up to this point all the things in the line are COMMENTED, so is not going to be read/compiled.

So... you have to try there, a piece of valid code. I mean (and I do one thing) with this:

for (int i = 0; i < lim; i++)
{
//fill with random
}

has to be done something, for example...

//time.h has to be included at the top  <<--- THIS IS A COMMENT

srand( (unsigned)time( NULL ) );

for (int i = 0; i < lim; i++)
{
myArray[i] = rand ();
}

With that you fill an array with LIM - 1 positions with random numbers.

Re: How to code

David Crow20-Sep-07 17:42

David Crow

20-Sep-07 17:42

Nelek wrote:
The easiest way is to use an empty project with Doc/View arquitecture.

Gotta love driving nails with a sledgehammer! Roll eyes | :rolleyes:

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: How to code

David Crow20-Sep-07 17:44

David Crow

20-Sep-07 17:44

snoop82 wrote:
How to create several files of integers to be used to test sorting.several sizes, for example, size 20, 200, and 2000. Make files that are in order, in reverse order...

Do you have access to Excel?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: How to code

DevMentor.org20-Sep-07 18:20

DevMentor.org

20-Sep-07 18:20

Well if you have a pseudo random generator and it's always initialized with the same seed than you will always generate the same sequence of numbers!!!

Thus it's possible to do the performance comparison test you are taking about.

---
Yours Truly, The One and Only!
devmentor.org
Design, Code, Test, Debug

How to use bitmap buttons

Engr_Arsalan19-Sep-07 23:28

Engr_Arsalan

19-Sep-07 23:28

Hi i am working on a dialog box in a MFC application in VC 6.0 I want to use a simple button on which there is no text written instead a bmp image is drawn. what i actually need is that the image of button will change on mouse over,mouse down,mouseup etc. I need help of you people to solve this problem.
Thanks

Re: How to use bitmap buttons

KarstenK19-Sep-07 23:54

KarstenK

19-Sep-07 23:54

You must draw the different images yourself in the OnPaint() function and check your conditions. Search for ownerdrwan buttons (XPButton) Unsure | :~

This is the way not the solution...

Greetings from Germany

Re: How to use bitmap buttons

josip cagalj20-Sep-07 3:19

josip cagalj

20-Sep-07 3:19

Try to find 'BtnST' class on this site. All you have to do is place a button on dialog, delete all text and in your .h file(wich you added to yours project) declare them as 'CButtonST' (a.g. CButtonST m_btnMY). It take this much code in yours cpp:

m_btnMY.SetIcon(IDI_ICON10);//icon you want(must be in resource)<br />
	m_btnMY.SetFlat(TRUE);// if u want to be flat<br />
	m_btnMY.SetTooltipText(_T("some text"));//if u want tooltip

and that is it!!!
You could do a whole lot more... just reed the article and take at look at sample!

Re: How to use bitmap buttons

KarstenK20-Sep-07 3:27

KarstenK

20-Sep-07 3:27

Fine idea, but I was not the asker. D'Oh! | :doh:

Greetings from Germany

Re: How to use bitmap buttons

josip cagalj20-Sep-07 3:32

josip cagalj

20-Sep-07 3:32

I'm sorry, I didn't mean to send this to you. When I clicked replay I meant generally to original post. Once again sorry!

Re: How to use bitmap buttons

Engr_Arsalan24-Sep-07 20:42

Engr_Arsalan

24-Sep-07 20:42

Thaks a lot dear fellow
your suggestion really helped me a lot.
looking forward for further collaboration.
Regards

Re: How to use bitmap buttons

josip cagalj24-Sep-07 22:28

josip cagalj

24-Sep-07 22:28

Happy I could help!
Be aware of an a little bug I discovered, tooltips working fine before you press the button, but after that (when whatever code you run under the button press ends) tooltips do not appear any more so you have to put them back:

void CMyDlg::OnBtnMY() <br />
{<br />
	//...yours code<br />
	m_btnMY.SetTooltipText(_T("some text"));<br />
}<br />

[Message Deleted]

imdx8019-Sep-07 23:24

imdx80

19-Sep-07 23:24

[Message Deleted]

Re: VC++ Editor Quick Question,

nbugalia20-Sep-07 1:33

nbugalia

20-Sep-07 1:33

can you please tell me which visual studio you are working in ?
Also check the font of your editor, may be it got changed.
Do a test -
Copy some text from vc editor which contains " and ?.
Paste it in notepad. Now check if notepad shows the original characters.

Also do the reverse of it, Copy text from notepad and paste in vc editor.
Are the characters got changed now also ?

[Message Deleted]

imdx8020-Sep-07 2:02

imdx80

20-Sep-07 2:02

[Message Deleted]

Re: VC++ Editor Quick Question,

nbugalia20-Sep-07 2:17

nbugalia

20-Sep-07 2:17

Good to hear that Smile | :)

[Message Deleted]

tasumisra19-Sep-07 23:24

tasumisra

19-Sep-07 23:24

[Message Deleted]

Re: vc++ equivalent of c#

toxcct19-Sep-07 23:35

toxcct

19-Sep-07 23:35

hey !
this is a forum, not a chat.
you don't have to repost the same question[^] again. just wait !

delete this and wait until someone knows your answer.
and don't forget GOOGLE and MSDN are your friends Suspicious | :suss: