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Hello,
i need to create an array with a certain size, the value is stored in an integer (not constant) but for some reason i am unable to initialize an array with the following code:
int size = someclass.somefunction.somevalue;
int buffer[size];
Why cant i initialize it like this?
TY
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yeah1000 wrote: Why cant i initialize it like this?
Because the value is unknown at compile time.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"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
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How about this:
int size = someclass.somefunction.somevalue;
PINT buffer = new int[size];
...
...
...
...
delete[] buffer;
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Hi,
If I double click an exe which is in a DVD and if I remove the DVD how long the exe will be in the systems"s memory.....in XP,server 2003,2008,Vista
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It will stay in memory until the application is terminated or exited. This could be milliseconds, seconds, minutes, hours, days, weeks, months, years, decades, centuries or milleniums.
If you access a resource in the executable with the DVD removed your operating system will probably complain.
Best Wishes,
-David Delaune
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The EXE is not completely loaded into the memory.
Only portions that are currently executing and are likely to execute later are stored.
So it will depend on the amount of memory you have and the nature of the executing program.
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Hi,
I want to send binary file through Sockets in WindowsXP from server to client.My code is-
client:
hFile=CreateFileA(path, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
if (hFile == NULL || hFile == INVALID_HANDLE_VALUE)
{
hFile = NULL;
}
for (i=0 ; ; )
{
j=recv(sock, buf, sizeof(buf), 0);
printf("\n\treceiving file...plz wait.");
if (j <= 0)
break;
i += j;
WriteFile(hFile, buf, j, &dw, 0);
}
CloseHandle(hFile);
printf("\n\tfile received sucessfully");
server:
fp=fopen(pathoffile,"rb");
if(fp==NULL)
{
printf("\ncann't open file");
}
for (i=0, endoffile=0 ; ; )
{
j = fread(buf, 1, sizeof(buf), fp);
if (j < 0)
{
}
if (j == 0)
{
endoffile = 1;
}
j=send(TheClient, buf, j, 0);
}
The code is compiled properly but when i want to receive any file.the file received sucessfully.I was thinking that it should be printed on client computer "file received sucessfully" but it is printed only when i close my server.When the server is executing at the receving time it is printed "receiving file...plz wait." yet the file already sucessfully received on client side.
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ravi 12 wrote: When the server is executing at the receving time it is printed "receiving file...plz wait." yet the file already sucessfully received on client side.
The client side code will continue to attempt to receive data even after the end of the file, as you do not tell the client that there is no more data. As long as the socket remains open the client will try and read from it. You need to send a message from the server to indicate EOF and then the client and server should both close their connections.
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Thanks Richard MacCutchan........
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Hey Richard MacCutchan,
Can you please tell me how to achive this ?Actually i am little bit in confuse related to this topic.
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WindowsVsLinux wrote: Can you please tell me how to achive this ?Actually i am little bit in confuse related to this topic.
Sorry, but I am not sure what you are asking. My suggestion to the original poster was quite simple: when the server gets end-of-file on the data file he should send a special message to the client which the client understands as 'no more data'. Both sides should then close their socket connections.
I don't know whether you are using Windows or Linux, but you will find that socckets are broadly the same on both platforms. Lots of good information on MSDN, here and other sites. Use Google to find tutorials and samples.
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Hey Richard MacCutchan,
Can you please tell me how to achive this? Actually i am little bit in confuse related to this topic.
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I suppose your recv is a blocking call (that's the default behaviour of sockets).
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]
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you should signal the client that all data is sended:
shutdown( m_sock, SD_SEND );
Press F1 for help or google it.
Greetings from Germany
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Hi,
I want to ask you that how to clear all the elements of an char array.Can i use strcpy(array.""); for this purpose? or can i do linke this array[0]='\0' to delete all the elements
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if you need to clear the whole array then you've to do something like
(I assume it is an array of chars)
char foo[]="foo";
memset(foo, '\0', sizeof(foo));
Setting
foo[0]='\0'; is just a shortcut to have a zero-terminated empty string (plus some garbage) into the array, i.e.
char foo[]="foo";
foo[0]='\0';
printf("%s\n", foo);will output a blank line.
Anyway (and of course) the array content isn't all erased (namely foo[]={'\0', 'o', 'o' };)
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]
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Aren't you just wanting to initialise the array elements to zero? See ZeroMemory[^] and SecureZeroMemory[^].
ravi 12 wrote: array[0]='\0' to delete all the elements
That won't "delete" the elements of an array.
“Follow your bliss.” – Joseph Campbell
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i use
char buff[200] = {0};
to initialize a buffer. or memset( buff, 0 sizeof(buff) );
Press F1 for help or google it.
Greetings from Germany
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Comma missing.
Charles the Nitpick. 
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]
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CPallini wrote: Charles the Nitpick. Rhinotillexomaniac
FTFY  
Best Wishes,
-David Delaune
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You should not disclose our little secrets...
BTW How long does an active process remain in memory if I unplug the power cable?
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]
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CPallini wrote: BTW How long does an active process remain in memory if I unplug the power cable?
Until your uninterruptible power supply or battery has no more energy. On my desktop this is about 15 minutes. I think my laptop will last about 3 hours. But we can always upgrade to the 'Wind-Up' Laptop[^] and generate more energy indefinitely.
Best Wishes,
-David Delaune
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I made an application to run for Vista and provided a manifest file for the same ,with elevated permissions but while trying to run it I get an error "A referral was returned from the server."?
Can you let me know the issue ?
Kushagra
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Hi Kushagra,
Could you paste the contents of your manifest file into the forum?
Best Wishes,
-David Delaune
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<!-- Identify the application security requirements./>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v2"/>
<security>
<requestedPrivileges>
<requestedExecutionLevel level="requireAdministrator"
uiAccess="false"/>
requestedPrivileges/>
</security>
</trustInfo>
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