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Your code already sends and receives an integer; what is the problem?
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thank you Richard McCutchan, the problem is that I wanted to display the number at the server level. 
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There are some errors in your. The first is the buffer size when sending an integer;
if (( send(sock , (char * )& a , sizeof(&a) , 0) < 0) )
The passed buffer size is wrong. It should be:
if (( send(sock , (char * )& a , sizeof(a) , 0) < 0) )
When reading replies, you probably want to read them into another buffer (as indicated by the size). So change
if( recv(sock , (char *)& a , 2000 , 0) < 0)
to
if( recv(sock , server_reply , sizeof(server_reply) , 0) < 0)
Similar for the server where you should first read an integer and then send the reply. So change this
if ( (read_size = recv(client_sock , (char *)&a , 2000 , 0)) > 0 )
to
if ( (read_size = recv(client_sock , (char *)&a , sizeof(a) , 0)) > 0 )
and send the reply afterwards.
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merci beaucoup Jochen Arndt 
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Hi,
im having trouble understanding this line of C code (XC32, pic32):
uint16_t Cur = 65535;
uint16_t Next = 14000;
uint32_t ResVal = 0;
ResVal = ((uint32_t)Cur + (uint32_t)Next);
I believe the C standard requires that some sort of integral promotion takes place here but the result is not 79535. Instead i get an overflown uint16_t result.
How can i add two uint16_t variables and get the correct uint32_t result?
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That should work even without casting. For your example an optimising compiler would just assign 79535 to ResVal.
The XC32 compiler is gcc based. So I don't think that there is a compiler problem.
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In addition to what Jochen said, sometimes looking at the disassembly is helpful.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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I tried your code with the simulator (I don't have a an actual PIC32 MCU) and I see (with a watch) the correct result.
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First of all: Casting happens implicitly so you don't need to cast in this scenario.
Secondly: These types that you are specifying in non-standard types, so uint32_t could be defined as anything which will give you an incorrect result.
Thirdly: How to you check what the result is? Though debugging or though a print statement? The print statement could be wrong.
Fouth: Know your platform you writing the code for (its limitations and the standard it is using). Not necessarily that the pic32 uses the specific c standard which you are looking at.
"Program testing can be used to show the presence of bugs, but never to show their absence."
<< please vote!! >></div>
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It is possible to change the text of an menu item who has another branch menu ? I have tried classical solution:
pCmdUI->SetText(_T("&aaaa"));
but is working only on simple menu item ... if from this menu item go another menu items branch, the text have not change it ...
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It should work, but if you have a resource based menu it's possible the system is refreshing it from your resource details.
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I put a TRACE macro inside of ON_UPDATE_COMMAND_UI handler, but strange, it doesn't call at all ... that is why the text is not changing ... this message (ON_UPDATE_COMMAND_UI) is not calling for menu items that has derived menu from itself ?
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Did you add their control ids to the set that the ON_UPDATE_COMMAND_UI responds to?
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Yes, I did:
ON_UPDATE_COMMAND_UI(ID_VIEW_RENDERER1PLAN, &CMyAppDoc::OnUpdateViewRenderer1plan)
The fact is when I change menu item functionality, from this state (when from this menu is derived another menu item) into simple menu item, the text changing is working ...
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It is difficult to guess what may be happening in your code, but changing the text of a control should have no effect on the message passing and event handling for that control. I would try it myself but do not have MFC on my system.
There is also some useful information at https://msdn.microsoft.com/en-us/library/65dtx4a4.aspx[^].
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have this code in secure shell
and I want to keep log of the users input
I fopen the file in the beginning
and fprinf on the data specific that needs to be written
then at end of file I fclose it
the problem is that its not writing the file
when I cat gamelog it just sends me to the next calling line
??????
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Member 12084559 wrote: ??????
We have the same question!
What does the code look like? You've told us what you want, and what is actually happening, but without seeing the code, it's anyone's guess.
"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
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creating a battleship game with log in. Need to know how to create a file that will check if login is correct. then be able to fprintf so I can use login file.
only need login name not password
thanks
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Are you asking how to write a program from soup to nuts, or are you asking about a specific issue?
The difficult we do right away...
...the impossible takes slightly longer.
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pretty much soup to nut if you wanna put in that inference. I'm new to programming and I cant grasp the concept of either one.
Im making a battleship game which calls for a gamelogfile and a gameboard file from which i have to read from.
I have to be able to use the gamelogfile to check whether or not the users name is correct. and also for it to be able to store the names of each user.
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Member 12084559 wrote: I'm new to programming and I cant grasp the concept of either one.
Then it is most unlikely that you are going to succeed in creating a battleship game. I suggest your time would be better spent finding some decent books/tutorials etc and working through them in order to build up a reasonable knowledge of the basics.
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main (void){
FILE* gamein;
int numIn=0;
int row=0;
int column=0;
float Use=0;
int gameinput_array[5][5];
//output
for(row =0; row<5; row++){
for(column=0; column<5; column++)
fscanf(gamein, "%d", &numIn); //have two fscanf's 1st
gameinput_array[row][column]=numIn;
}
//
gamein = fopen("gameinput", "r");
while((fscanf(gamein, "%d", &numIn))==1) // 2nd
printf("%d", numIn);
char gamelog_file[30];
FILE* gamelog;
printf("Enter Your User Name here\n");
scanf("%s", &gamelog_file);
//gamelog=fopen(gamelog_file,"a");//append
return 0;
}
NOW IM DRAGING BORAD INFO FORM gameinput FILE* WHICH HAS JUST LINES OF 0'S AND 1'S 5*5 GRID
NEED TO KNOW ABOUT THE FSCANF'S, WHETHER THEY ARE CORRECT OR NOT
WHEN THIS CODE COMPILES I GET SEGMENTATION FAULT BUT IT DOES COMPILE
THANKS IF YOU CAN HELP
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