Say you have: struct c_struct { int value; /* other stuff */ void (* dump)(); }; and you'd like to, at some point: c_struct_obj->dump(); I assume there's no way you could instantiate a c_struct object such that its particular "dump" function knows its particular "value" the way C++ methods know member variables (via the im...
Many times I need to do things TWICE in a for loop. Simply I can set up a for loop with an iterator and go through it twice. for (i = 0; i < 2; i++) { // Do stuff } Now I am interested in doing this as SIMPLY as I can, perhaps without an initializer or iterator ... or any really simple and elegant way ... How would you do it? x ...
When this program is run, the "stderr" line is displayed before the "stdout" line. Why? I thought dup2 would make stderr and stdout use the same file descriptor so there should be no problem with buffering. I'm using gcc 3.4.6 on Solaris 10. #include <errno.h> #include <stdio.h> #include <unistd.h> int main() { int fd[2]; int p...
I have an ANSI C code that is about 10,000 lines long that I am trying to use in an iPhone project. When I compile the code with gcc on the command line, I type the following: gcc -o myprog -O3 myprog.c This program reads in large jpeg files and does some fancy processing on them, so I call it with the following ./myprog mypic.jpg a...
Platform: Linux, OSX Compiler: GCC I've got a simple program which is currently confounding me - I know that I'm messing with a couple different kinds of arrays/pointers to produce this problem - its intentional - I'm trying to understand it. The code as listed will compile and run as expected, but changing data4 in the call to strsep(...
I am making a function that turns a list of words into an array to be used by other functions, but somehow I'm overwriting previous words. I check the memory address' and they seem different, but when I recheck once I'm done importing the words, they are all the same. static char **array; //takes the name of a data file and reads it in...
I have a randomly ordered C array of integer numbers. Each of these numbers represents a color, and has its relationship to every other number in the array defined elsewhere (they are non-linear, and are based on both the brightness of the color and the hue). I need a quick, efficient algorithm to sort these numbers based on their ...
this en.wikipedia.org/wiki/Hot_swapping#cite_note-1 says that VS can do it with the help of its debugger. Does gdb provide a similar functionality ? this is the closest i could find, but doesn't seem to be ready to be used: http://www.aitdspace.gr/xmlui/handle/123456789/219 dlopen/dlsym/dlclose are also close, but will not work for ...
Is there a way to find out if a socket is already in Non-Blocking mode in Windows? I know this can be done in case of Linux, but, I am unable to find any way for this Windows. All my coding is in 'C' language. Is there a way? ...
Here was my original code: #include <stdio.h> #define IN 1 // inside a word #define OUT 0 // outside a word // program to print input one word per line int main(void) { int c, state; state = OUT; while ((c = getchar()) != EOF) { if (c == ' ' || c == '\n' || c == '\t') { state = OUT; printf("\n"); } ...
I'm not looking for the answers to be given to me, just some direction on what I need to look at to get started. /* copyLSB - set all bits of result to least significant bit of x * Example: copyLSB(5) = 0xFFFFFFFF, copyLSB(6) = 0x00000000 * Legal ops: ! ~ & ^ | + << >> * Max ops: 5 * Rating: 2 */ int copyLSB(int x) { return 0; ...
I was trying to develop a chat application using C programmable sockets. I need to check whether the stdin buffer has some value in it to send the message to the client/server and receive it. But I don't know how to check the stdin buffer for values. Please help. ...
i have been asked in a interview question to change the entry point of a c or c++ program from main() to any other function how is it possible? thanx in advance. ...
I want to create a project file turbo c++ and link the files in this project. Although i have tried for it but i found only one option that to open a project no option to create a new project. So How to do that Thanks in advance. Saurabh Mehta. ...
I'm programming in C. I'm getting the following error: ctc E208: ["..\..\ECB\Include\ecb.h" 4/11] syntax error - token ";" inserted before "u8_vTeethBeforeMissingTeeth1" Here is what I have in the .h file: #ifndef __ECB_H__ #define __ECB_H__ extern u8 u8_vTeethBeforeMissingTeeth1; extern u8 u8_vTeethBeforeMissingTeeth2; #endif /* ...
I want to read in a string and parse it with sscanf. Although i don't want to read in any spaces in the beginning. Sample string. @a Bear Tiger sscanf(strLine, "@%1s %64s %64s", dir, name1, name2); I have that. Problem is if the line goes in as say @a Bear Tiger Should be: @a Bear Tiger that it will want to read in th...
Is there a good way to loop over a string with sscanf? Let's say I have a string that looks like this: char line[] = "100 185 400 11 1000"; and I'd like to print the sum. What I'd really like to write is this: int n, sum = 0; while (1 == sscanf(line, " %d", &n)) { sum += n; line += <number of bytes consumed by sscanf> } but t...
I'm trying to embed python into c to use it for configuration: If I do it like this: /****************************************************************************** * * Embeding Python Example * * To run: * gcc -c test.c -o test.o -I"C:/Python25/include" * gcc -o test.exe test.o -L"C:/Python25/libs" -lpython25 * test.exe * ****...
I am writing a C program that is expected to be compiled with all major compilers. Currently I am developing on GCC on a linux machine and will compile on MSVC before committing the code. To make the cross-compiling easy, I am compiling with -ansi and -pedantic flags. This worked well until I started using snprintf which is not available...
are pointers of integer or unsigned datatype? ...