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Re: std::cout inside of object

Randor 11-Oct-20 21:33

11-Oct-20 21:33

Yep,

I always disliked the TCHAR hacks. Although I do still find myself using the L and _T macros for string literals. Smile | :)

Smile | :)

Btw, I met you some years ago at one of the restaurants after the mvp summit. I think you were the only guy not drinking alcohol if I remember correctly. Laugh | :laugh:

Laugh | :laugh:

Best Wishes,
-David Delaune

Re: std::cout inside of object

Victor Nijegorodov12-Oct-20 2:32

Victor Nijegorodov

12-Oct-20 2:32

Randor wrote:
Btw, I met you some years ago at one of the restaurants after the mvp summit. I think you were the only guy not drinking alcohol if I remember correctly.

I am afraid you remember it wrong (if it was me in the restaurant after MVP summit!) Laugh | :laugh:

Laugh | :laugh:

I usually drink alcohol if I do not drive nor work. Blush | :O

Blush | :O

Re: std::cout inside of object

Randor 12-Oct-20 7:20

12-Oct-20 7:20

Ok, it would have been at the Submixer[^] which is at the commons area. I went out of my way to make it there in the evenings just to see some of the people from the online forums.

Actually now that I think about it, it was probably Marius Bancila. In my mind I've always had both you guys organized as the "Codeguru mvps".

Best Wishes,
-David Delaune

Re: std::cout inside of object

Victor Nijegorodov12-Oct-20 9:22

Victor Nijegorodov

12-Oct-20 9:22

Maybe it was marius. Sometimes he refused alcohol.
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Insert or embed File Dialog in a CPropertyPage

Maximilien6-Oct-20 11:30

6-Oct-20 11:30

I'm trying to see if I can embed a CFileDialog to a CPropertyPage.

I stumbled on this question with a minimalist answer (I've asked there also) : Re: CFileDialog in CPropertySheet - C / C++ / MFC Discussion Boards

The id IDD_FILEOPEN_EX does not exists, can I replace it with AFX_IDD_FILEOPEN ? (there's not seems to be a IDD_FILEOPEN id ).

also,

If I need to include dlgs.h to have access to the id stc32, do I need to include an additional RC file somewhere.

Or, is there a more modern way of doing this ?

Thanks.

I'd rather be phishing!

Re: Insert or embed File Dialog in a CPropertyPage

Victor Nijegorodov6-Oct-20 22:12

Victor Nijegorodov

6-Oct-20 22:12

The AFX_IDD_FILEOPEN is defined in afxres.h that is by default #incuded in your resource.h file.

Member 149564755-Oct-20 9:12

Member 14956475

5-Oct-20 9:12

Hi everyone . I am a newbie in programming , so i would be very grateful if you could help me . I have to implement the Blum Blum Shub in C or C++ using the stdlib.h and time.h libraries . Can anyone help me with this ?
Thanks Smile | :)

Smile | :)

Re: Blum Blum Shub

Victor Nijegorodov5-Oct-20 9:18

Victor Nijegorodov

5-Oct-20 9:18

And what exactly is your problem?

Re: Blum Blum Shub

Member 149564755-Oct-20 9:26

Member 14956475

5-Oct-20 9:26

I have to create a random number generator Blum Blum Shub in C or C++ ,using libraries stlib.h and time.h

Re: Blum Blum Shub

Victor Nijegorodov5-Oct-20 9:59

Victor Nijegorodov

5-Oct-20 9:59

Then do it!

Re: Blum Blum Shub

jeron15-Oct-20 9:27

5-Oct-20 9:27

Maybe take a look at this article. CBBS: A Pseudo Random Number Generator[^]

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Re: Blum Blum Shub

Member 149564755-Oct-20 9:31

Member 14956475

5-Oct-20 9:31

I already took a look at him but i need not a so complex code , only a simple version with these two libraries that i mentioned.

Re: Blum Blum Shub

Richard MacCutchan5-Oct-20 9:48

Richard MacCutchan

5-Oct-20 9:48

c random - Google Search[^] and Blum Blum Shub - Wikipedia[^]

Re: Blum Blum Shub

Member 149564755-Oct-20 9:57

Member 14956475

5-Oct-20 9:57

And time.h how to use in it?

Re: Blum Blum Shub

Richard MacCutchan5-Oct-20 10:02

Richard MacCutchan

5-Oct-20 10:02

No idea, because we do not have the instructions that your teacher gave you. If you read the documentation for the random and time functions (time, _time32, _time64 | Microsoft Docs[^]) you should be able to decide how they can help you.

Re: Blum Blum Shub

Member 149564755-Oct-20 10:08

Member 14956475

5-Oct-20 10:08

Here's the full indications that i have :
Purpose: to develop a function that generates random numbers from
a given range.
Elaboration of the module for generating random numbers
Resources :
C or C++ compiler
stdlib.h and time.h libraries
Algorithm Blum Blum Shub

Hope it helps in any kind

Re: Blum Blum Shub

Richard MacCutchan5-Oct-20 10:23

Richard MacCutchan

5-Oct-20 10:23

So, you have all the information you need, time to get started. If you were under the mistaken impression that someone here was going to do your work for you ...

Re: Blum Blum Shub

ZurdoDev5-Oct-20 11:15

5-Oct-20 11:15

You are not asking a specific question. You are essentially asking someone to do all the work for you, which will not happen.

Get started on it and if you get stuck on something specific then come back and show where you are stuck and someone will be glad to help.

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Fight for left-handed rights and hand equality.

Re: Blum Blum Shub

David Crow6-Oct-20 3:39

6-Oct-20 3:39

Member 14956475 wrote:
I have to implement the Blum Blum Shub in C or C++...

More importantly, can you do it with pencil and paper? If the answer is no, then: 1) you are going to be hard pressed to implement it in code, and 2) you should work on it until you can produce results on paper. Don't let computer code take the place of the basic understanding of algorithms.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Re: Blum Blum Shub

Member 149564756-Oct-20 11:32

Member 14956475

6-Oct-20 11:32

Okay , this is the code that i managed to do :

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
/*BLUM BLUM SHUB*/

int main()
{

  const int p = 30000000091;
  const int q = 40000000003;
  int N ;
  scanf("%i", &N);
  const unsigned long long int s = 1200000003730000000273;
  unsigned int i,M,x[N];
  time_t t;
  srand((unsigned) time(&t));


  M=p*q;

  i=0;
  x[0]=s;
  for(i=1;i<=N;i++){
                    x[i]=(x[i-1]*x[i-1])%M;
                   }
  for(i=1;i<=N;i++){
                    printf(" x[%d] = %d\n",i,x[i]);
                    }

  system("PAUSE");
  return 0;
}

I have some issues with it , first it's that i need to add from console the biggest number D and i dont know how to put it in as now it's generating numbers without upper limit . Also can anyone tell me how to fix the code as it generates the same numbers at some intervals , if you have other remarks on how to make it better tell me please . Thanks Smile | :)

Smile | :)

Re: Blum Blum Shub

Richard Andrew x646-Oct-20 11:45

Richard Andrew x64

6-Oct-20 11:45

I found at least one issue with the code:

You're using the variable N before you initialize it with a value. This is a no no.

The difficult we do right away...
...the impossible takes slightly longer.

Re: Blum Blum Shub

David Crow6-Oct-20 17:05

6-Oct-20 17:05

Member 14956475 wrote:
...i need to add from console the biggest number D and i dont know how to put it in as now it's generating numbers without upper limit .

Change your main() signature to:

void main( int argc, char *argv[] )

Then access argv[1] to get D as a command line argument.

Also, your two for() loops are accessing beyond the end of the x array. In C, arrays start at 0.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Re: Blum Blum Shub

Member 149564757-Oct-20 8:13

Member 14956475

7-Oct-20 8:13

I've replaced main() with

void main( int argc, char *argv[] )

, but how can i acces argv[1] to get D as a command line argument?

modified 7-Oct-20 13:31pm.

Re: Blum Blum Shub

David Crow7-Oct-20 8:31

7-Oct-20 8:31

Member 14956475 wrote:
...but how can i acces argv[1] to get D as a command line argument?

The same way you would access parameters from within any other function. main() is no different. See here for more.

Member 14956475 wrote:
...is it possible to use srand command?

Your code is already doing that. However, the way in which you are using it is meaningless since you are also not calling rand(). rand() by itself will always generate the same sequence of numbers. srand() will "seed" the number generation process to start at a different spot.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Re: Blum Blum Shub

Member 149564757-Oct-20 8:39

Member 14956475

7-Oct-20 8:39

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
/*BLUM BLUM SHUB*/
int main ()
{

const int p = 347;
const int q = 351;
const unsigned long long int s = 12373273;
int N ;
printf("enter the number:");
scanf("%i", &N);
unsigned int i,M,x[N];
srand(time(NULL));

M=p*q;
i=0;
x[0]=s;

for(i=1;i<=N;i++){
x[i]=rand()*(x[i-1]*x[i-1])%M;
}
for(i=1;i<=N;i++){
printf("%d\t",x[i]);

}
system("PAUSE");

return 0;
}
I added srand and rand is it okay working now ?

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