Updated question is here http://stackoverflow.com/questions/828108/please-help-me-to-solve-this-memory-allocation-problem I'm working on making a HashTable in C. This is what I've done. I think I'm going on a right path but when I'm trying to main.c HashTablePtr hash; hash = createHashTable(10); insert(hash, "hello"); insert(hash, "...
In Python and Ruby, signed integer division truncates towards negative infinity, and signed integer modulus has the same sign the second operand: >>> (-41) / 3 -14 >>> (-41) % 3 1 However, in C and Java, signed integer division truncates towards 0, and signed integer modulus has the same sign as the first operand: printf("%d\n", (-41...
Please don't close this saying a duplicate question. I made an important change so not to confuse people, I resubmitted this much clearer codes. Please help me to solve this memory allocation problem. I'm working on a HashTable and this is what I've (partial codes only) main.c HashTablePtr hash; hash = createHashTable(10); insert(hash...
"nano-hmac" is a Haskell package which can normally be installed using Cabal. However, Mac OS X has a different OpenSSL library than the one it expects, so it fails to compile bindings. I can install the version of openssl from openssl.org, but I'm not sure how to instruct Cabal to use this instead of the Mac OS X version. ...
How do we shift from protected mode to real mode in Linux 2.6? ...
Sometimes I need to learn the type of an expression while programming in C or C++. Sometimes there's a good IDE or existent documentation to help me, but sometimes not. I often feel such a construct could be useful: void (*myFunc)(int); printf("%s", nameoftype(myFunc)); //"void (*)(int)" int i, unsigned int u; printf("%s", nameoftype(i+...
Almost the same question as this one here: http://stackoverflow.com/questions/825327/whats-the-easiest-way-to-grab-a-web-page-in-c however the conditions have changed and I need to connect via https, this is a bit more tricky, anyone got any snippets? I am on a qnx platform, building and compiling additional libraries and rolling it ou...
I'm dealing with an undocumented API that I'm trying to do a bit of reverse engineering on - don't worry this isn't malicious, just trying to fulfill a use case in a creative way. I've got a pointer to a C structure. Is there a way for me to determine by examining the memory how many members this structure has? Their values? I suspec...
I have code that handles the LostFocus event of my controls. It validates the value and in some cases will enable a subsequent control. For instance, there might be a ComboBox that allows a user to select a country. The subsequent ComboBox allows the user to select a state. IF the currently selected country is not the USA, the state ...
Can I set LD_LIBRARY_PATH for an individual application? I am looking into system call failure, so is there any way I can set set the correct path using the LD_LIBRARY_PATH setting? ...
Say I have a large number (integer or float) like 12345 and I want it to look like 12,345. How would I accomplish that? I'm trying to do this for an iPhone app, so something in Objective-C or C would be nice. ...
As a part of an assignment, I need to write two functions: a function that sums up two natural numbers represented as a linked list a functions that prints a number represented in the same way. for some reason, both function work perfectly fine separately, but when I try to use the print function on the result of the sum function, i...
Hi... I'm trying to draw a graph of the dependencies between C header files using graphviz. Basically, what I'm doing is log all the #include that appear and the condition (#if conditions I mean). If a file includes another one, it becomes its father in the graph and the potential condition is the edge label. I obtain a pretty large g...
Given a stdio FILE * pointer, is there a method by which I can discover the name of the (opened) file? ...
Is there a VB6 equivalent to the C/C++ 'continue' keyword? In C/C++, the command 'continue' starts the next iteration of the loop. Of course, other equivalents exist. I could put the remaining code of the loop in an if-statement. Alternatively, I could use a goto. (Ugh!) ...
Why doesn't this code print "test"? #include <stdio.h> #include <stdlib.h> void foo ( void ) { printf("test\n"); } __declspec(naked) void bar ( void ) { asm { push 0x000FFFFF call malloc pop ecx push eax add eax, 0x000EFFFF mov ecx, esp mov esp, eax push ecx call foo ...
I am trying to find information on glibc and to what extent it uses SSE functionality. If it is optimized, can I use it out-of-the-box? Say I am using one of the larger Linux distros, I assume that its glibc is compiled to be as generic as possible and to be as portable as possible, hence not optimized? I am particular interested in ...
When compiling a simple Netbeans C project that uses sockets I get the following output. I supose the problem is that gcc is not properly linking sockets.h library. Need a foolprof method to solve this. Thanks i advance Running "/usr/bin/make -f Makefile CONF=Debug clean" in /export/home/manu/Escritorio/TP-entrega 2/Application_1 /usr...
I'm not asking for a code implementation, but given GTK+'s skillset, what would be from an abstract perspective the best way to implement a grid such that each square is clickable and the like? ...
I have a general understanding of restrict but I'm hoping to clarify some fine points. I have a function that reads a null-terminated string from one buffer and writes out a URL encoded version in another buffer. The function has this signature (currently without restrict): char const *StringUrlEncode(char const *unencoded, ...