C / C++ / MFC Discussion Boards

Re: printf and unsigned char

leppie22-Mar-03 5:19

leppie

22-Mar-03 5:19

Thanks Nish, but I'm not sure that will help Confused | :confused:

I'm reading Afrikaans text from a file. And Afrikaans has all those nice o's, e's, with various thingies on them. Here's some code:

FILE *input;
char inputfile[50] = "input.txt";
char word[50];
char yesno;

if ((input = fopen(inputfile, "r")))
{
  while (!feof(input))
  {  	  
    fscanf(input, "%s", word);
    	
    if (!trieIsMember(word))
    {
      //here the "upper" (128+) chars dont print properly to console
      //the char are shown properly in the debugger though, no prob in linux
      printf("Spell Error: %-20s Add word? ", word); 
      yesno = getchar();getchar(); //for enter
      if (tolower(yesno) == 'y')
        trieAdd(word);
    }
  }
  fclose(input);
}

Any ideas?

I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02

Re: printf and unsigned char

Nish Nishant22-Mar-03 9:43

Nish Nishant

22-Mar-03 9:43

leppie wrote:
I'm reading Afrikaans text from a file

That makes a huge difference. Now you basically need wide character versions of all the functions you have been using Smile | :)

Replace printf with wprintf, fopen with _wfopen, fscanf with fwscanf etc...

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: printf and unsigned char

Jambolo25-Mar-03 17:13

Jambolo

25-Mar-03 17:13

You need to change the code page or the LOCALE or something like that.

Re: printf and unsigned char

leppie22-Mar-03 6:21

leppie

22-Mar-03 6:21

OK I found out what the problem is. It appears to be an ANSI/ASCII conflict. The letters appear fine in ANSI charset, but comes out funny in ASCII what it appears they are using for the console.

Now the question is: How can I print ANSI strings properly to ASCII?

And I thought DOS was dead.... Poke tongue | ;-P

I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02

Re: printf and unsigned char

Nish Nishant22-Mar-03 9:44

Nish Nishant

22-Mar-03 9:44

leppie wrote:
Now the question is: How can I print ANSI strings properly to ASCII?

Those are wide character strings (using unicode)

See my reply to your other post Smile | :)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: printf and unsigned char

leppie22-Mar-03 10:17

leppie

22-Mar-03 10:17

I can assure you those are NOT wide. Smile | :)

These are the ones: ëêéô , but the command prompt just does not spit them out correctly. I get what looks like an epsilon, omega, theta and integral characters, in that order. [edit]δΩΘ⌠ , these are the ones I get on the console[/edit]

Perhaps its to do with regional settings...? I will have a look. Smile | :)

There is an options for codepage for non unicode programs. It was set to English US. I have change this now, but requires a reboot. I have not planned a reboot yet, but perhaps Monday will be a good day. Windows XP has been running 2wks 4days 8hrs 33mins. Eek! | :eek:

I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02

Re: printf and unsigned char

Nish Nishant22-Mar-03 10:59

Nish Nishant

22-Mar-03 10:59

leppie wrote:
I can assure you those are NOT wide.

These are the ones: ëêéô

Uhm, okay and sorry abt the confusion. I guess the command prompt is simply unable to show those characters by default. The codepage idea sounds good. Good luck. And if you get it to work, write an article for CP Wink | ;-)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: printf and unsigned char

leppie22-Mar-03 18:20

leppie

22-Mar-03 18:20

Nishant S wrote:
And if you get it to work, write an article for CP

I think its rather a bug in XP Poke tongue | ;-P

ë (copied) for example comes up as 235 where by defualt it should be 137 according to the ASCII table. Confused | :confused:

I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02

Re: printf and unsigned char

Nirav Doshi23-Mar-03 4:03

Nirav Doshi

23-Mar-03 4:03

One possible way to display unsigned char in printf is to convert it to an int and display the int as a char.

<br />
int x = 240;<br />
printf("%c .. %d\n", x, x);<br />

This will surely be slow for large strings! Unsure | :~

Hope this helps you someway! Blush | :O

Rgds,
Nirav Smile | :)

* The world stands aside to let anyone pass who knows where he is going! - David Jordan *

Using TStream

DREVET Olivier22-Mar-03 1:47

DREVET Olivier

22-Mar-03 1:47

Hi,

I must use TStream in an application but I don't know which header to use with it.

Thank you for more infos about it Smile | :)

Florian

Re: Using TStream

Dominik Reichl22-Mar-03 2:05

Dominik Reichl

22-Mar-03 2:05

Try asking in a Pascal/Delphi forum Wink | ;)

;);)

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

Re: Using TStream

DREVET Olivier22-Mar-03 12:10

DREVET Olivier

22-Mar-03 12:10

Arg... ok thanks Big Grin | :-D

packet consious people

summo22-Mar-03 1:37

summo

22-Mar-03 1:37

I am in trouble. I am trying hard to send my tcp packet on the network but the packet is not going. I am using this strategy to do it.
Please tell me if I am setiing any fault attributes.

1. create tcp packet using tcp structure.
2. Send the Packet using "Send to" method.

SOCKET s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);

struct ipheader *iph = (struct ipheader *) datagram;
struct tcpheader *tcph = (struct tcpheader *) datagram + sizeof (struct ipheader);
struct sockaddr_in sin;

PS_HDR pseudo_header;

sin.sin_addr.s_addr = inet_addr ("192.168.2.64");

iph->ip_hl = 5;
iph->ip_v = 4;
iph->ip_tos = 0;
iph->ip_len = sizeof (struct ipheader) + sizeof (struct tcpheader);
iph->ip_id = 1;
iph->ip_off = 0;
iph->ip_ttl = 255;

iph->ip_p = 6;
iph->ip_sum = 0;
iph->ip_src = inet_addr ("192.168.2.61");
iph->ip_dst = sin.sin_addr.s_addr;

tcph->th_sport = htons (1234);
tcph->th_dport = htons (PORT);
tcph->th_seq = rand();
tcph->th_ack = 0;
tcph->th_x2 = 0;
tcph->th_off = 0;
tcph->th_flags = 2; // SYN
tcph->th_win = htons(65535);
tcph->th_sum = 0;
tcph->th_urp = 0;

// Build the Psuedo Header

pseudo_header.source_address = inet_addr ("192.168.2.61");
pseudo_header.dest_address = sin.sin_addr.s_addr;
pseudo_header.placeholder = 0;
pseudo_header.protocol = IPPROTO_TCP;
pseudo_header.tcp_length = htons(sizeof(tcpheader));

tcph->th_sum = checksum((unsigned short *)&pseudo_header, sizeof(pseudo_header));
iph->ip_sum = checksum((unsigned short *)&iph, sizeof(ipheader));
// ENABLE IPHDRINCL

if (setsockopt(s, IPPROTO_IP, IP_HDRINCL, (char *)&bOpt, sizeof(int)) == SOCKET_ERROR)
{
printf("setsockopt(IP_HDRINCL) failed: %d\n", WSAGetLastError());
return -1;
}

// Send The Packet
if (sendto(s, datagram, sizeof(datagram), 0, (SOCKADDR *)&sin, sizeof(sin)) == SOCKET_ERROR)
{
printf("sendto() failed: %d\n", WSAGetLastError());
return -1;
}
printf("message sent");

//The code is executing perfectly but the packet does not reach its destination.

//plz help me

Reply me soon

Re: packet consious people

valikac22-Mar-03 6:45

valikac

22-Mar-03 6:45

How do you know the packet does not reach its destination? Maybe it does but the server ignores it or misinterprets the packet as junk.

You implemented datagram. Why?

socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

Kuphryn

Re: packet consious people

summo23-Mar-03 19:44

summo

23-Mar-03 19:44

MR kuphryn Firstly I know it because I have a network traffic sniffer running on the detinaion of the program so when packet will reach it will show it.
Second I am not using the datagram socket sock_dgram but creating the tcp packet
socket(AF_INET, SOCK_RAW, IPPROTO_RAW)
IP.PROTOCOL =IPPROTO_TCP

using raw socket please if you can help me by any reference any helping material, code , or anything please do me a favour.

Reply me soon

Constructor conversion.

WREY21-Mar-03 23:38

WREY

21-Mar-03 23:38

According to the rules of C++, a constructor for a class taking a single parameter, could be used to implicitly convert the value of the constructor's parameter type to a value of the constructor's class type.

That means, I ought to be able to convert an "int" value, to a "Number" value. That is not happening. Can anybody see why?

Thanks!

====================================

class Acct;
 
class Number
{
public:
   Number(int  i=0) : n(i) {}
   Number(const Acct& ac)  :  acct(ac) {}
 
   void print(Number nbr)  {  cout<< " Nbr: " << nbr <<endl;  }
 
private:
   Acct  acct;
   int  n;
};
 
----------------------------------------------
 
int main()
{
   Number num;
   num.print(99);
   return 0;
}

========================

Because it's an "int" I'm printing (as a result of the conversion), I should be able to use the regular standard I/O operators to output the result. The compiler doesn't believe so, and is complaining about that too.

Confused | :confused:

William

Fortes in fide et opere!

Re: Constructor conversion.

Vimal Earnest22-Mar-03 4:45

Vimal Earnest

22-Mar-03 4:45

William,
The conversion from int to Number is legitimate in C++, and my VC++ 6.0 compiles it fine. But the print function wont compile, since you are printing a 'Number' and not an int.The compiler has no idea about printing the Number type.To do this you need to overload the insertion operator "<<".

~ Vimal

Re: Constructor conversion.

WREY22-Mar-03 13:29

WREY

22-Mar-03 13:29

Thanks Vimal.

You make a lot of sense and you are correct. However, I had done just what you recommended before posting the note, and everything did work for me.

But when examined, overloading the stream insertion operator "<<" didn't looked like it bought me anything, because I could have obtained the same result if I had not used constructor conversion and had done things the regular way, using an "int" instead for my print() parameter.

I figured as part of the ctor conversion technique, one of the benefits I would obtain, would be NOT having to overload the "<<" operator. Secondly (and this is the part that made me refused to give up), I thought somebody might know of a way (that I didn't) to make what I was trying to achieve, work.

I thank you for your response because it tells me what I was dreaming of doing, will just not work.

Thanks again!

Cool | :cool:

William

Fortes in fide et opere!

Re: Constructor conversion.

Anonymous22-Mar-03 13:07

Anonymous

22-Mar-03 13:07

Try changing the print to take a reference:

void print (Number &nbr)

hash_set and std::string

Martin AntonioA21-Mar-03 22:41

Martin AntonioA

21-Mar-03 22:41

Friends, i am doing something like:

using namespace std;

hash_set<string> myhashstring;

myhashstring.insert("USA");

As such program is giving me error that:

(38): error C2440: 'type cast' : cannot convert from 'const std::string' to 'size_t'

But if i use "set" instead of "hash_set" the program works normally. Any one guess whats the problem ???

Re: hash_set and std::string

valikac22-Mar-03 6:52

valikac

22-Mar-03 6:52

hash_set is a container. In your code, you did not include the correct template parameters.

http://www.sgi.com/tech/stl/hash_set.html

Kuphryn

plz..help me...ㅠㅠ;; from mad combo

tvhead8021-Mar-03 22:25

tvhead80

21-Mar-03 22:25

I try to make a CComboBox dynamically which have owner draw.
first, I tried it myself.
It compiled ok, but "Unhandled Access Violation" when execute.

So, I find exercises about ComboBox which have owner draw in CodeProject and Codeguru.
Though So many exercies are, they are not dynamically, but static in dialog

How can I Create CComboBox dynamically which have owner draw?

to be Ace.

About #pragma

gumber21-Mar-03 19:35

gumber

21-Mar-03 19:35

Kindly tell what is a #pragma and why is it a must to use it at some places

Gaurav Gumber

Re: About #pragma

Michael Dunn21-Mar-03 20:27

Michael Dunn

21-Mar-03 20:27

#pragma gives commands to the compiler. The ones I commonly use are pack to change how struct members are arranged in memory, and comment(lib) to make the linker use a particular import LIB file.

--Mike--
THERE IS NO THERE IS NO BUT THERE IS MAGIC PIXIE DUST BUSINESS GENIE CODE PROJECT

Homepage | RightClick-Encrypt | 1ClickPicGrabber
"You have Erica on the brain" - Jon Sagara to me

Stream Manipulators

Makover21-Mar-03 19:21

Makover

21-Mar-03 19:21

I would like to achive the following:

91.26464 --> 91.26 (2 digits after the floating point at most)
91.20464 --> 91.2 (because of the 0 at the second position)
91.00464 --> 91 (first 2 digits sfter the floating point are 00)

I tried to use setpresicion and setiosflags but it seems I don't know how to get these results.

-----------------------
Go USA Go

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