I've been having issues getting the C sockets API to work properly in C++. Specifically, although I am including sys/socket.h, I still get compile time errors telling me that AF_INET is not defined. Am I missing something obvious, or could this be related to the fact that I'm doing this coding on z/OS and my problems are much more compli...
So I find myself porting a game that was originally written for the Win32 API to Linux (well, porting the OS X port of the Win32 port to Linux), and have implemented QueryPerformanceCounter by giving the uSeconds since the process start up: BOOL QueryPerformanceCounter(LARGE_INTEGER* performanceCount) { gettimeofday(¤tTime...
I have been trying to implement Win32's MessageBox using GTK. The app using SDL/OpenGL, so this isn't a GTK app. I handle the initialisation (gtk_init) sort of stuff inside the MessageBox function as follows: int MessageBox(HWND hwnd, const char* text, const char* caption, UINT type){ GtkWidget *window = NULL; GtkWidget *dialog ...
Original Question: Should I Learn C? In the theme of the stackoverflow podcast, here's a fun question: should I learn C? I expect Jeff & Joel will have something to say on this. Some info on my background: Primarily a Java programmer on "enterprisy" systems. Favorite languages: python, scheme 7 years programming experience A very sm...
I've tried to write a string replace function in C, which works on a char * which has been allocated using malloc(). It's a little different in that it will find and replace strings, rather than characters in the starting string. It's trivial to do if the search and replace strings are the same length (or the replace string is shorter ...
How do you specify a callback for rb->pcm_play_data()? ...
What are good libraries for C with datastructures like vectors, deques, stacks, hashmaps, treemaps, sets, etc.? Plain C, please, and platform-independent....
#include <stdio.h>int main() { unsigned long long int num = 285212672; //FYI: fits in 29 bits int normalInt = 5; printf("My number is %d bytes wide and its value is %ul. A normal number is %d.\n", sizeof(num), num, normalInt); return 0;} Output: My number is 8 bytes wide and its value is 285212672l. A normal number is 0. I...
I'm working on a project where I'm coding in C in a UNIX environment. I've been using the lint tool to check my source code. Lint has been around a long time (since 1979), can anyone suggest a more recent code analysis tool I could use ? Preferably a tool that is free....
I want to write C/C++ programs that take input from a MIDI device. The MIDI device connects to my PC using a USB connector. I'm looking for a (C/C++ implemented) library that I can use to read the MIDI signals from the MIDI device through the USB port. I'm happy manipulating the MIDI data once I get it, I just don't want to have to ...
In C can I pass a multidimensional array to a function as a single argument when I don't know what the dimensions of the array are going to be ? In addition my multidimensional array may contain types other than strings....
Is there a C library function that will return the index of a character in a string? So far, all I've found are functions like strstr that will return the found char *, not it's location in the original string....
A researcher has created a small simulation in MATLAB, and we want to make it accessible to others. My plan is to take the simulation, clean up a few things, and turn it into a set of functions. Then, I plan to compile it into a C library and use SWIG to create a Python wrapper. At that point, I should be able to call the simulation from...
Why are pointers such a leading factor of confusion for many new, and even old, college level students in C or C++? Are there any tools or thought processes that helped you understand how pointers work at the variable, function, and beyond level? What are some good practice things that can be done to bring somebody to the level of, "Ah...
I'm working on a Scheme interpreter written in C. Currently it uses the C runtime stack as its own stack, which is presenting a minor problem with implementing continuations. My current solution is manual copying of the C stack to the heap then copying it back when needed. Aside from not being standard C, this solution is hardly ideal. ...
I've worked on a number of different embedded systems. They have all used typedefs (or #defines) for types such as UINT32. This is a good technique as it drives home the size of the type to the programmer and makes you more conscious of chances for overflow etc. But on some systems you know that the compiler and processor won't change...
I'm trying to alpha blend sprites and backgrounds with devkitPro (including libnds, libarm, etc). Does anyone know how to do this? ...
I haven't seen any questions relating to GNU autoconf/automake builds, but I'm hoping at least some of you out there are familiar with it. Here goes: I have a project (I'll call it myproject) that includes another project (vendor). The vendor project is a standalone project maintained by someone else. Including a project like this is...
Is the shift operator (<<, >>) in C arithmetic shift or logical shift? ...
I'm working on bringing some old code from 1998 up to the 21st century. One of the first steps in the process is converting the printf statements to QString variables. No matter how many times I look back at printf though, I always end up forgetting one thing or the other. So, for fun, let's decode it together, for ole' times sake and...