C / C++ / MFC

Re: how to delete cstring

10-Apr-09 2:22

change (see [^]):

Aljaz111 wrote:
str.Format(_T("%f"),a);

str.Format(_T("%g"),a);

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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Aljaz11110-Apr-09 4:01

Aljaz111

10-Apr-09 4:01

lol funny...

Thanks

Unable to detect few usb drives

Le@rner10-Apr-09 1:05

Le@rner

10-Apr-09 1:05

Hi all,

I am able to detect all usb drives from my program but are not able to detect digital camera(with pictbridge technology) from my program..... Is there any special kind of Api used to detect these type of devices....

Thanks in advance

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

how can i input from file using i/o with getline

Mohamed_Khalil10-Apr-09 0:24

Mohamed_Khalil

10-Apr-09 0:24

hi guyz ..

how can i can input from .dat or .txt using getline statment ?
with unlimited size of D'Oh! | :doh:

memory ?>

Re: how can i input from file using i/o with getline

CPallini10-Apr-09 0:26

Re: how can i input from file using i/o with getline

10-Apr-09 0:26

dr.nokia wrote:
how can i can input from .dat or .txt using getline statment ?

What is your trouble about?

dr.nokia wrote:
with unlimited size of D'Oh! memory ?>

Uh! Who gave you that?

Smile | :)

Mohamed_Khalil10-Apr-09 0:29

Mohamed_Khalil

10-Apr-09 0:29

coz i've assignment project about morse code read input from I/O file

Re: how can i input from file using i/o with getline

CPallini10-Apr-09 0:39

Re: how can i input from file using i/o with getline

10-Apr-09 0:39

Interesting, anyway, you didn't ask neither of my questions.
Good luck with your assignment.
Smile | :)

Mohamed_Khalil10-Apr-09 0:41

Mohamed_Khalil

10-Apr-09 0:41

i want to use with unlimited size coz i don't know how the msg big is !!

Re: how can i input from file using i/o with getline

CPallini10-Apr-09 0:56

Re: how can i input from file using i/o with getline

10-Apr-09 0:56

Obviously you haven't memory of unlimited size. If your file is reasonably small then you may allocate memory to read the whole file, otherwise you need to read the (big) file in chunks.
Smile | :)

David Crow10-Apr-09 2:55

David Crow

10-Apr-09 2:55

dr.nokia wrote:
how can i can input from .dat or .txt using getline statment ?

Something like:

ifsstream ifs;
string line;
while (getline(ifs, line))
{
    ...
}

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

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Displaying date in Short Format

shiv@nand9-Apr-09 22:50

shiv@nand

9-Apr-09 22:50

In VC++ 6.0 MFC application
i am trying to Display date in Shot Format eg;05-10-09
but it will print 05-10-2009

Here is the code i written
SYSTEMTIME st;
GetSystemTime(&st);

CString str;

str.Format("%02d-%02d-02%d",st.wDay,st.wMonth,st.wYear);
m_date=m_date + str;

I will get output say eg: 05-10-2009, but i want in this format 05-10-09

Plz any body help me

Jijo.Raj9-Apr-09 23:02

Jijo.Raj

9-Apr-09 23:02

Hello Jiya,

You can use _tcsftime()[^] or CTime::Format()[^] to format date/time in required format.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

shiv@nand9-Apr-09 23:16

shiv@nand

9-Apr-09 23:16

_tcsftime()[^] or CTime::Format()[^] to format date/time in required format how we can use it i am not getting plz will give the example

Jijo.Raj10-Apr-09 0:57

Jijo.Raj

10-Apr-09 0:57

Hello Jiya,

if you have trouble with those apis, then use COleDateTime. Check the sample code snippet for your use,

COleDateTime time = COleDateTime::GetCurrentTime();
CString str = time.Format(_T("%d-%m-%y"));

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

David Crow10-Apr-09 2:57

David Crow

10-Apr-09 2:57

jiya-123 wrote:
I will get output say eg: 05-10-2009, but i want in this format 05-10-09

Have you tried:

str.Format("%02d-%02d-%02d",st.wDay,st.wMonth,st.wYear%100);

doubly linked lsit

Aljaz1119-Apr-09 22:34

Aljaz111

9-Apr-09 22:34

how to put node at the end of list. I have so:

struct element{<br />
	int key;<br />
	int idx;<br />
	element *prev, *next;<br />
};

in main i have:

<br />
element* head=NULL; ->pointer on begging<br />
element* tail=NULL; ->pointer on end<br />
element* new=NULL; ->pointer for new node<br />
<br />
int el;<br />
new=new element;<br />
                <br />
cin>>el;<br />
nov_el->key=el;<br />
add(head,new,tail); <br />

I know how to put node at the beggining:

<br />
void vstavi(element*&head, element* new, element*&tail)<br />
{<br />
new->prev=NULL;<br />
new->next=head;<br />
<br />
if(head!=NULL)<br />
{<br />
    head->prev=new;<br />
}<br />
<br />
else<br />
tail=new;<br />
head=new;<br />
<br />
}<br />

How to change this code for adding on beggining so it will add on the end. And everytime new node is added to the end idx from structure element must idx=idx+1;

Thanks a lot

CPallini9-Apr-09 23:22

9-Apr-09 23:22

Please use the code block button to post code snippets.
It looks like you aren't completely aware about C++ syntax: new is a keyword (hence a reserved identifier), moreover if you wish (as it appears) execute both the statements

Aljaz111 wrote:
tail=new;
head=new;

after the else clause the you've to enclose them in a block ({}).

Please fix your code, be sure it compiles and works and then ask for completion.
Smile | :)

Aljaz11110-Apr-09 2:14

Aljaz111

10-Apr-09 2:14

i know..i just want to give good name for new element Big Grin | :-D

i my code i have nov_el;)

Divyang Mithaiwala9-Apr-09 23:23

Divyang Mithaiwala

9-Apr-09 23:23

What's problem? Code is simple.

void addTail(element*&head, element* new, element*&tail)
{
	new->next=NULL;
	new->prev=tail;

	if (tail!=NULL)
	{
		tail->prev=new;
		new->idx=tail->idx+1;
	}
	else
	{
		head=new;
		new->idx=0;
	}
	tail=new;
}

Do not trust a computer...
Always check what computer is doing

regards,
Divyang Mithaiwala
Software Engineer

CPallini9-Apr-09 23:29

Cannot convert from 'CString' to 'TCHAR []'

9-Apr-09 23:29

Divyang Mithaiwala wrote:
Do not trust a computer...
Always check what computer is doing

As well as don't trust your mental compiler: new, you know, is a C++ keyword hence, as it stands, your code won't compile.

Smile | :)

PankajB9-Apr-09 22:31

PankajB

9-Apr-09 22:31

Hi There.

I am using VS2008, and am facing above problem.

For details, below is what I am doing...

CString strSource = L"Hello";
TCHAR SourceFile[] = strSource;

Please suggest.

Thanks
PanB

Re: Cannot convert from 'CString' to 'TCHAR []'

PankajB9-Apr-09 23:01

PankajB

9-Apr-09 23:01

Found a Solution: Above conversion can be done using _tcscpy function.
Eg:

CString strSource = L"Hello";
TCHAR SourceFile[100];
_tcscpy(SourceFile, strSource );

Re: Cannot convert from 'CString' to 'TCHAR []'

CPallini9-Apr-09 23:25

Re: Cannot convert from 'CString' to 'TCHAR []'

9-Apr-09 23:25

Your solution only works on UNICODE builds.
On the other hand, you may easily generalize it with

CString strSource = _T("Hello");
TCHAR SourceFile[100];
_tcscpy(SourceFile, strSource );

to work both in UNICODE and in ANSI builds.
Smile | :)

CPallini9-Apr-09 23:13