is it possible to connect to an mysql database and issue queries using c++? i found some sample code from the internet but they all use mysql! so u need to install mysql first on the computer. what i want is to use a program from different locations where i don't have mysql installed to access a remote mysql database. is this possible? ...
What techniques / methods exist for getting sub-millisecond precision timing data in C or C++, and what precision and accuracy do they provide? I'm looking for methods that don't require additional hardware. The application involves waiting for approximately 50 microseconds +/- 1 microsecond while some external hardware collects data. ...
Hello all! I have some questions about antlr3 with tree grammar in C target. I have almost done my interpretor (functions, variables, boolean and math expressions ok) and i have kept the most difficult statements for the end (like if, switch, etc.) 1) I would like interpreting a simple loop statement: repeat: ^(REPEAT DIGIT stmt); ...
let's say i have a setup file called setup.exe i want to make this setup.exe include another exe file inside of it !! how can i do that ? or what is this process called and i will try to search and learn p.s i would do that with C , C++ p.s the other exe isn't a virus don worry :) it's a security file that will block that sof...
Is there any techniques to optimize code in order to ensure lesser power consumption.Architecture is ARM.language is C ...
Do you have any horror stories to tell? The GCC Manual recently added a warning regarding -fstrict-aliasing and casting a pointer through a union: [...] Taking the address, casting the resulting pointer and dereferencing the result has undefined behavior [emphasis added], even if the cast uses a union type, e.g.: union a_union...
It seems at least weird to me... The program runs normally.But after I call the enter() function for the 4th time,there is a segmentation fault!I would appreciate any help. With the following function enter() I wanna add user commands' datas to a list. [Some part of the code is already posted on another question of me, but I think I s...
struct person { int age; char name[100]; struct person *next; }; void delfirst(struct person **p)// For deleting the beginning { struct person *tmp,*m; m = (*p); tmp = (*p)->next; free(m); return; } void delend(struct person **p)// For deleting the end { struct person *tmp,*m; tmp=*p; w...
For debugging purposes I would like to have a printf_debug function that would function just like the standard printf function, but would only print if a #DEFINE DEBUG was true I know I have to use varagrs (...) but I have no idea how to actually achieve that. Thanks in advance. ...
Hi All, I have the following piece of code for getting the hostname and IP address, #include <stdlib.h> #include <stdio.h> #include <netdb.h> /* This is the header file needed for gethostbyname() */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> int main(int argc, char *argv[]) { struct hostent *he; if (argc!...
void addContact(contactEntry** phoneBook, char* name, char* surname) { /*look*/ contactEntry *tempEntry=malloc(sizeof(contactEntry)); /*look*/ NEXT(tempEntry)=NULL; PHONELIST(tempEntry)=NULL; contactEntry *newContact=malloc(sizeof(contactEntry)); curEntry = (*phoneBook); NEXT(newContact)=NULL; PHONELIS...
I was wondering how one might extract the current state of the registry, of Windows XP, in C or C++? (While the OS is active). I been trying to use BackupRead() on the registry-files, but it is impossible to CreateFile() them. I managed to create a Shadow Copy of the registry-files, but it wasn't the current state of the registry. Woul...
Whenever I do a scanf before a fgets the fgets instruction gets skipped. I have come accross this issue in C++ and I remember I had to had some instrcution that would clear the stdin buffer or something like that. I suppose there's an equivalent for C. What is it? Thanks. ...
I've noticed a difference in behaviour for gcc's destructor when compiled under linux and crosscompiled with mingw. On linux the destructor will not get called unless the program terminates normally by itself (returns from main). I guess that kind of makes sense if you take signal handlers into account. On Win32 however, the destructor...
Supposed I register many different function names in Lua to the same function in C. Now, everytime my C function is called, is there a way to determine which function name was invoked? for example: int runCommand(lua_State *lua) { const char *name = // getFunctionName(lua) ? how would I do this part for(int i = 0; i < functions.siz...
I have two programs, recvfile.py and sendfile.cpp. They work except that I end up with a bunch of extra newline characters at the end of the new file. I don't know how the extra spaces get there. I know the problem is sender side, because the same doesn't happen when I use python's sendall() function to send the file. Here are the files...
The following piece of code gives a segmentation fault when allocating memory for the last arg. What am I doing wrong? Thanks. int n_args = 0, i = 0; while (line[i] != '\0') { if (isspace(line[i++])) n_args++; } for (i = 0; i < n_args; i++) command = malloc (n_args * sizeof(char*)); ...
I installed a PostScript printer driver and have setup REDMON (redmonnt.dll) for redirecting postscript output to my program. In my rather simple c program I capture the data from STDIN and I am able to successfully save it into a .ps file. The file looks OK. However, I want to start gsview.exe for viewing the file. If I call ShellEx...
What are the most useful proposed features of C1X so far? And what support for them is there in current compilers? ...
How can I send data through a GTK callback? I've Googled, and with the information I found created this: #include <gtk/gtk.h> #include <stdio.h> void button_clicked( GtkWidget *widget, GdkEvent *event, gchar *data); int main( int argc, char *argv[]){ GtkWidget *window; GtkWidget *button; gtk_init (&argc, &argv); wi...