C / C++ Forum

Most books don't go into how to code one to many relationships. They just seem to basically cover one to one. Can some one point me out how to guide me to a link on the net where I can get more information. By they way I found a book that covered a bit on it but i am confused with ...UnboundedSetByValue in the following examples shown in the...

#include <iostream> using namespace std; void main() { char *a; a = new char; cin >> a; cout << a; }

I have a c++ program that spans multiple files. How do I call member functions in one file from the other? Thanks, Santosh

Hi , I am trying to call routines form IMSL library form VisualC++. It compiles and builds everything,but when I try to run it I get an error cstat.dll not found. What could be wrong? Thanks Shilpi

I have recently purchased an aspi wrapper control for vb. I haven't had much experience with hex and memory addresses and that's my problem. The piece of code that baffles me is: With ASPI1 .HostAdapter = 0 .SCSIID = 4

Hello, I could find in the C++ definition that: delete NULL (delete 0) is perfectly valid. But I couldn't find the same thing for delete... Thanks Mathieu

I have an old C-Program written with Borland 2.0. Now I like to do some changes, but I get lot of syntax Erros with my new computer. When I use the old mashine ( 286 ) it works perfectly but I can not use the program on the new computer. It will not run.( Runs under MS-DOS) Is there any one how can help me? I also used newer Compilers but...

I've got a tricky problem here. I try to create an object-hierarchie, based on a template base class like template <class T> class Node { addChild(Node<T> *) =0; // the Node-Container wil be defined in the base classes }; The problem is, that the classes derived from Node represent different forms of hierarchies, which all can use a...

Hi, I have a question that pertains to Templates and link time. This is totally for my own understanding and to correct what's obviously an erroneous view of things on my behalf; Lets say I have; // main.cpp

I have test the following program, why the result is not 0 2 4 but 0 2 3? Can someone tell me why the same macro produce different result? Thanks! #include <stdio.h> #define max(a,b) ((a)>(b) ? (a): (b)) test() { printf("%d\n", 1); }

Folks, Any suggestions for a generic library to do linked lists, hashes and the sort. I have tried libds and it seems to do my job ok. It will be used in closed source software (not my choice). I think from the license with libds that is ok. If you have any suggestions on a better library to use then please let me know.

Hi all, Consider the situation. I am designing class library and I have a class A. I derived class B and class C from A but derivation is not virtual. for exa. class A {}; class B : public A {}; class C : public A {};

I have a simplistic exception class like so: class CommException { public: CommException(const char *err){ strncpy(msg,err,ERR_MSG_LEN); } virtual ~CommException(){;} void erase(void) { memset(msg,'\\0',ERR_MSG_LEN); } const char* report(void) { return msg ; } private:

Hi, My goal is to display in a graphical application properties of my objects. To do that I am using on windows a graphical control (MFC) called EPropCtrl with the following definition : class IPropertyHost {

Hello, I would like implement a nice way to work around the array of references issue in C++. What do usually people do ? Do you maintain a separate factory/pool of elements as part of the API ? So in my example (*) I would need to either : 1. allocate on the heap (and then fragment memory): void fill(A *array) {

Hello All.. I'm a student and studing C++. Could you tell me what can I develop in C++? I konw that C++ can develop almost programs. Just I want to know....

Hello, i posted this question more than 1 month ago but did not get any answers, so i am posting it again (1). with advice form archives @ alt.comp.lang.learn.c-c++, comp.lang.c++, comp.lang.c++.moderated & ACCU.org & i came to the following conclusion for learning c++: "Accelerated C++" by Koenig & Moo

Hi all, maybe it's an old question, but I couldn't find an answer... let's say I have this kind of directory structure for project foo: /foo/includes/mod1.h (exported by mod1) /foo/includes/mod2.h (exported by mod2) /foo/mod1/file1.c /foo/mod1/file1.h (exported by file1)

Hi all! I am doing a crude investigation of memory leaks in objects created by external libraries. Since I don't have access to the source code, I can't tell if an object are freeing its resources properly during destruction. For now, I need a portable function that can tell me the available free store memory. With that, I can do things...

Hi, all, If I know URL, how can I download that web page? What API can I use? Thanks.

Hi, #include <iostream> int main() { std::cout << float() << std::endl; } Outputs 0, is this standard or implementation defined? Is float() a

Hello, I woul like to know If there is any way to allocate two positions of memory for a pointer to double but in such way that this positions are not consecutive. What I really whant is to have one vector of two components where I can get the first component with the index 1, it means: VECTOR but to get the second component I don't want to...

This is the program I have written to display 10 tictactoe fields but using 10 strings input by a 2d array. For some reason with mine I'm getting the wrong data output. Could someone take a look at my tttfunction() and tell me if I screwed it up rather badly or not? (I'm struggling my way along through this one). #include<iostream> using...

exercise: counts spaces, tabs and newlines in the input for that, Richard Heathfield has created a C programme at his answers- page: http://users.powernet.co.uk/eton/kandr2/krx108.html i have also created my programme which runs fine. i want to have some comments on my programme, in comparison with Richard's.

I wrote a small timer class for use in a graphics engine I am working on for teaching myself. The small time based animations I tried with it seem to work fine but displaying the frame rate I noticed a certain "drop in framerate" to appear at regular intervals without any apparent reason. Here's the code I'm using: class BasicTimer