C / C++ / MFC

Re: scan string for characters \ / ? * : "

29-Dec-06 7:48

hobbyprogrammer wrote:
//do a scan of the string to see if it contains the characters \ / ? * : " < > |
//remove them from the string
//return the string without the characters

Why not just disalloow them to begin with?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

James R. Twine29-Dec-06 9:27

James R. Twine

29-Dec-06 9:27

hobbyprogrammer wrote:
or any other way to only let the user input only a-z and A-Z characters in the editbox?

You can have look at http://www.codeproject.com/editctrl/enhfocusedit.asp[^] for some ideas on how to filter the input.

Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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unsigned char (*) warning msg

ikbahrian29-Dec-06 2:42

ikbahrian

29-Dec-06 2:42

could anyone please guide me how can i get rid of the warning messges-

warning: format '%s' expects type 'char *', but argument 3 has type 'unsigned char (*)[3]'
warning: pointer targets in passing argument 1 of 'strlen' differ in signedness
---------------------------
struct test
{
unsigned char cont_type[3];
}

hits = sscanf(argv[i], "%s",&(test.cont_type));
printf("\nSending test packets with %s.\n", test.cont_type);
if(strlen(test.cont_type)>3)
------------------
thx

CPallini29-Dec-06 3:13

CPallini

29-Dec-06 3:13

it seems that you want to store some kind of string inside cont_type.
Holding that hypothesis, I cannot understand why are you passing &(test.cont_type), instead of (char *)test.cont_type. Note the cast that is needed also in the following statements in order to suppress the warning.

Hope that helps.

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.

ikbahrian29-Dec-06 3:29

ikbahrian

29-Dec-06 3:29

thanks.. I change the data type of cont_type from unsigned char to char...and it works..

David Crow29-Dec-06 3:22

29-Dec-06 3:22

ikbahrian wrote:
hits = sscanf(argv[i], "%s",&(test.cont_type));

test.cont_type is already an address, so there is no need to preface it with the address-of operator.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

ikbahrian1-Jan-07 4:25

ikbahrian

1-Jan-07 4:25

thx..ya man you are right.

char set int value..

davvid29-Dec-06 2:41

davvid

29-Dec-06 2:41

Thank for most who helped me to find out random fun before..
I am new to programming .. I just writing simple twenty one game..
Now my random out is like that ... k 5 6 q j .. mix char and int together randomly.. it might be suck..! now i want to add evth together to get some value (number) for twenty one game..BUT what i want is to set char with numerial value... like 'k'is 10. for example.. k +5 , the result be 17 etc.. how can set char with numberial value..here is some of my simple code..:lol:

int compcard=3,urcard;//urtotal=0,comptotal=0;
int num;
string randomChar = "kqja";
srand( (unsigned int)time( 0 ) );
cout<<"u want ?"<<endl;
cin="">>urcard;
for ( int i = 0; i < urcard; i++ ) {
if ( rand() < RAND_MAX / 2 )
//in real, ur total .. have to put.. urtotal+=.....
cout << rand() % 10 + 1 << '\n';
else
cout << randomChar[rand() % randomChar.length()] <

Joan M29-Dec-06 2:51

29-Dec-06 2:51

This is not the exact answer that you ask, but...

Why don't you create a vector with the values that have been appearing. this vector should be dinamically modified.

then you could show the values making an easy function that would compare some values and substitute those values for the right letters.

In this way you could work always with numbers and you would separate the data from the visualization.

Hope this helps.

David Crow29-Dec-06 3:33

29-Dec-06 3:33

While not a C++ solution, how about something like:

struct
{
    char face;
    unsigned int value;
} card[13] = {
    {'2', 2},{'3', 3},{'4', 4},
    {'5', 5},{'6', 6},{'7', 7},
    {'8', 8},{'9', 9},{'t', 10},
    {'j', 10},{'q', 10},{'k', 10},
    {'a', 11}
};

void main( void )
{
    srand(time(NULL));

    int x = rand() % 13;
    printf("Card %c is worth %u points.\n", card[x].face, card[x].value);
    x = rand() % 13;
    printf("Card %c is worth %u points.\n", card[x].face, card[x].value);
}

You'll need to figure out how to handle the Ace, however.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

davvid30-Dec-06 4:29

davvid

30-Dec-06 4:29

Thank a lot .. .. It really work .. but when I make adding process .. it not print out the right number .. I dont know why..here is my code ..

#include <cstdlib>
#include <ctime>
#include <iostream>
#include <string>
using namespace std;
struct
{
char face;
unsigned int value;
} card[13] = {
{'2', 2},{'3', 3},{'4', 4},
{'5', 5},{'6', 6},{'7', 7},
{'8', 8},{'9', 9},{'10', 10},
{'j', 10},{'q', 10},{'k', 10},
{'a', 11}
};

int main( void )
{
//int num
urtotal=0;
//srand(time(NULL));
srand( (unsigned int)time( 0 ) );

for (int i=0;i<4;i++)
{

int x = rand() % 13;
printf("Card %c is worth %u points.\n", card[x].face, card[x].value);
card[x].value+=card[x].value;
urtotal=card[x].value;
}
cout<<urtotal;
cin="">>num;
return 0;
}

David Crow2-Jan-07 3:05

VC++6: Meaning of memory leaks that are dumped when I close the app.

2-Jan-07 3:05

davvid wrote:
{'8', 8},{'9', 9},{'10', 10},

This should have produced a compiler error.

davvid wrote:
urtotal=0;

Is this a global variable?

davvid wrote:
urtotal=card[x].value;

You're not accumulating anything here.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Joan M29-Dec-06 2:01

Re: VC++6: Meaning of memory leaks that are dumped when I close the app.

29-Dec-06 2:01

Hello all,

I would like to know what do this dump means:

Detected memory leaks!
Dumping objects ->
strcore.cpp(118) : {381557} normal block at 0x018A57F0, 22 bytes long.
 Data: <            00:0> 01 00 00 00 09 00 00 00 09 00 00 00 30 30 3A 30 
strcore.cpp(118) : {381308} normal block at 0x018A5BB8, 22 bytes long.
 Data: <            00:0> 01 00 00 00 09 00 00 00 09 00 00 00 30 30 3A 30 
strcore.cpp(118) : {381059} normal block at 0x018A2C80, 22 bytes long.
 Data: <            00:0> 01 00 00 00 09 00 00 00 09 00 00 00 30 30 3A 30 
strcore.cpp(118) : {380810} normal block at 0x018A42D0, 22 bytes long.
 Data: <            02:2> 01 00 00 00 09 00 00 00 09 00 00 00 30 32 3A 32 
strcore.cpp(118) : {380560} normal block at 0x018A5028, 22 bytes long.
 Data: <            01:1> 01 00 00 00 09 00 00 00 09 00 00 00 30 31 3A 31 
strcore.cpp(118) : {376187} normal block at 0x018A5B60, 24 bytes long.
 Data: <            0.00> 01 00 00 00 05 00 00 00 0B 00 00 00 30 2E 30 30 
strcore.cpp(118) : {376186} normal block at 0x018A5A00, 24 bytes long.
 Data: <            0.00> 01 00 00 00 05 00 00 00 0B 00 00 00 30 2E 30 30 
strcore.cpp(118) : {376162} normal block at 0x018A59A8, 24 bytes long.
 Data: <            0.00> 01 00 00 00 05 00 00 00 0B 00 00 00 30 2E 30 30 
strcore.cpp(118) : {376161} normal block at 0x018A5950, 24 bytes long.
 Data: <            0.00> 01 00 00 00 05 00 00 00 0B 00 00 00 30 2E 30 30 
...

In the VC++6 IDE when I close the app that I'm developing this appears and I would like to know how to interpret this information just in order to be able to solve the related problems.

Thank you in advance.

CPallini29-Dec-06 2:34

CPallini

29-Dec-06 2:34

Seems you have not released dynamically allocated CStrings. It reports the data inide the strings.

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: VC++6: Meaning of memory leaks that are dumped when I close the app.

Joan M29-Dec-06 2:38

Re: VC++6: Meaning of memory leaks that are dumped when I close the app.

29-Dec-06 2:38

CStrings... yes, if I'm not wrong, they are released by calling their member function ReleaseBuffer();

I'll have to read again the documentation on the CStrings just in order to clarify when do they deserve to be freed and when do they don't need it.

Thank you.

James R. Twine29-Dec-06 5:12

James R. Twine

29-Dec-06 5:12

Joan Murt wrote:
CStrings... yes, if I'm not wrong, they are released by calling their member function ReleaseBuffer();

   No, ReleaseBuffer(...) is used after you are done messing with the pointer returned by calling GetBuffer(...).

   CString objects clean themselves up normally upon destruction.

   Peace!

-=- James

Re: VC++6: Meaning of memory leaks that are dumped when I close the app.

Gary R. Wheeler29-Dec-06 5:19

Gary R. Wheeler

29-Dec-06 5:19

Anytime you've done a GetBuffer() or GetBufferSetLength() call on a CString object, you need to have a corresponding ReleaseBuffer() call.

Software Zen: delete this;

Fold With Us![^]

Re: VC++6: Meaning of memory leaks that are dumped when I close the app.

Joan M29-Dec-06 2:39

Re: VC++6: Meaning of memory leaks that are dumped when I close the app.

29-Dec-06 2:39

Do you know where do I can get more information on the data that is shown in the debug window? I always think that I must know more on that data in order to be able to repair some problems without having to search for them "manually".

Thank you again.

CPallini29-Dec-06 2:57

CPallini

29-Dec-06 2:57

IMO the problem is in your allocation of CString objects. i.e. You've done something similar to the code below:

CString * pStr = new CString[20];

and you never deallocated them (CString never creates itself a memory leak, unless you hack its internal buffer...). Thus CString documentation will not help you.
The data reported there should help you to find such strings (for instance you can find some patterns of chars you used to initialize the strings).
Hope that helps

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: VC++6: Meaning of memory leaks that are dumped when I close the app.

James R. Twine29-Dec-06 5:15

James R. Twine

29-Dec-06 5:15

And be sure that you free them by using delete [] pStr instead of delete pStr otherwise you will only drop the number of leaks to 19! Smile | :)

N.B. not using delete[] in this case usually results (in VC++) in the memory being freed, but only the first object's destructor being called.

Peace!

-=- James

MFC DLL question

FredrickNorge29-Dec-06 1:18

FredrickNorge

29-Dec-06 1:18

I am curently loading a dll like this

static HMODULE hMod ;
hMod = LoadLibrary("Updater.dll");exit(1);
if(!hMod)
{
AfxMessageBox("not found !!!!!");
exit(1);
}
FreeLibrary(hMod);

The mfc app loads the mfc dll and exits, but is it possible to define some sort of return value in the mfc dll that the mfc app closes while the dll continue processing?

Re: MFC DLL question

Don Box29-Dec-06 1:30

Don Box

29-Dec-06 1:30

Plzz describe u'r question clearly.

Re: MFC DLL question

Joan M29-Dec-06 2:03