Hello, this is my main question: How do you create, compile and use static and dynamic libraries in linux-like systems? What is the difference between them? Are there any good free tutorials explaining this stuff for a total idiota like me. I've only done c# programming before. I know a little C, C++ and Objective-C. I'm developing fo...
Hello, Lately I've been getting interest in C standardization. I want to participate in development of C1X. I want to put forward my ideas (irrespective of they being accepted/rejected). I want to know the procedure. WG14 documents shows various documents sorted by mailing list. Where can I join one such mailing list? How to submit a p...
I would like to delegate to one of several possible lists of arguments based on whether particular arguments are present, along the lines of: ./test --do-thing-1 --option-A=7 --common-option --option-B=2 # options C and D not valid ./test --do-thing-2 --option-C=9 --common-option --option-D=1 # options A and B not valid And the best w...
I am having a strange problem while returning a string. it says can not convert int to const char* #include<stdio.h> #include<conio.h> #include <string.h> /*The above program shows that you can not return a string from a function normally*/ char check(char str[]); void main(void) { char str[30],str2[30]; printf("Enter a sentence...
I require to add a string before 45byte in an existing file. I tried using fseek as bellow. int main() { FILE *fp; char str[] = "test"; fp = fopen(FILEPATH,"a"); fseek(fp,-45, SEEK_END); fprintf(fp,"%s",str); fclose(fp); return(0); } I expected that this code will add "test" in before 45 char from EOF...
Hi. My question is: when i write a function prototype in C like this: void foo(int *vector); It's the same thing to do: void foo(int vector[MAX_LENGTH]); To the function, is passed always as a pointer? The code it's the same? Thanks in advance. ...
I want to sniff network packets without wincap library, kindly give me some hints or direction so that I can make it possible. ...
Where I can find the source code for du and other Linux utilities? ...
Hey, I've got some problems with a pointer void getPartOfString(const TCHAR * wholeString) { const TCHAR * pPointer = NULL; pPointer = _tcsstr(wholeString, searchedString); //searching for a special string in string pPointer += _tcslen(searchedString); //set pointer to the beginning of the string wanted //here I want t...
I'm running Fedora 13 if that matters. I looked up man pages on unix(7), setsockopt, and send/recv. Reading the man pages seems to more or less tell me that not all options are guaranteed to do ANYTHING... and apparently only a few that do/don't work are actually documented. In particular... I wanted to see if timeouts were possible. ...
Hi, I would like to have this x86 ASM code ported to C or C++, as I don't understand ASM =) Searching Google it seams Relogix and IDA Pro can do it. But I don't suppose they are cheap, given I only have this one source. Understanding the math or the algorithm how it works would be just as good, as I am going to use OpenGL anyway. Are...
I have an embedded python interpreter in my program. I'd like to export a module with values defined in my program and be able to change them from a python script. e.g. in c: int x = 1; in python: import embedded embedded.x = 2 in c: printf("%d",x); output: 2 Is this possible or do I have to export functions to change anything i...
Hi, I want to provide the type of an element as parameter to an initialization of an array of pointers to element of an unknown types something like void* init(type t) void* array = malloc(sizeof_type(t)*10)); return array; } and later call for example init(typeof(int)) But I was not able to figure what is the return type ...
?? fun() { int a[3]={3,3,4}; return &a; } what could be the compatible return type. Here the pointer is pointing to the array of 3 integers not just the pointer which points to integer array. Aim is to return a pointer to array of 3 integers. ...
I am reading a program which contains the following function, which is int f(int n) { int c; for (c=0;n!=0;++c) n=n&(n-1); return c; } I don't quite understand what does this function intend to do? ...
Well, the title says it all: How can I make Xcode tell the compiler not to link? I am making a library which may not link to anything. Where can I set in the target's properties that it must not link to the standard library, as I can choose static or dynamic only, there is no not option. Can you help me, please? Thanks. ...
This question might be remedial but I am having a lot of trouble with malloc. Why does my progrm crash upon freeing memory? #include <stdlib.h> #include <malloc.h> int main(int argc, char *argv[]) { int *arr[10]; void *mem = malloc( 10 * sizeof(int) ); int i; for(i=0;i<=9;i++) { arr[i] = (int*) mem + i*sizeof(int...
Are the members of a structure packed in C/C++? (by packed I mean that they are compact and among the fields there isn't a memory spaces) ...
Hi, I need to modify a DCT Coefficient for an application of steganography in C language. Is there any easy way to do it? Thanks a lot. ...
Hi, This is a very basic concept, but something I have never been able to articulate that well. and I would like to try to spell it and see where I go wrong. If I have to, how would I define a "newline character". say if I create a new file in unix(or windows), then does the file store the "end of line" information by inserting a speci...