C / C++ Forum

I have a few really long template functions. They belong in a source file... and thus must be "exported". Seeing as how few compilers support "export", could someone please point me to a webpage/post that gives a very decent method of exploiting "export" for those compilers that *do* export it, while still remaining compatible with the...

Why do I get NO as result from this ?? double du = (double)3.1415; du = ceil(du); if(du == (double)4) printf("YES\n"); else printf("NO\n");

What is the difference between copy initialization and assignment. How the memory will allocates the objects. Thanks &regards, Sai Kishore

Hello, Can we say that the return addresses from the various malloc function calls, in a program, will always be in a predefined order (increasing or decreasing, depeding on how the heap is managed) ? regards Manu

Hi all, What's that mean : "Low Level Verification of ASIC Soc"?. The SoC should be tested on development board containing FPGA, CPU and so. In this cas how would you proceed using C programming?. Do one need to be proficient in C prog or just fonctional C will do?. Thank for your precious time Gentlemans and Ladies. Thomas.

Is C++ Exception handling useful? think it is too complicated. What kinds of project need to use it? Thanks.

I'm trying to wrap my head around the wording but from what I think the standard says: 1. it's impossible to swap a restrict pointer with another pointer, i.e. int a = 1, b = 2; int * restrict ap = &a; int * restrict bp = &b;

Hello, everyone, I am writing a segment of code for listing the permutation of some event sequences. I tried to use template to make the code more general. When I commented the code as shown below, the code works okay. Otherwise, it will goes to seg fault. I am puzzled on this. Can anybody give me any hints?

Hi, How do I create a new type of structure that contains a pointer to its own type? i.e. typedef struct{ string tag; TagPtr *subPtr; } TagPtr;

Ok. I've looked at expat, libxml, ... Too much baggage! I would like to find a small XML walker/"parser"/reader that simply gives me callbacks (C++ or C). No validation needed or wanted. I would prefer some open sourced, portable thing (Linux, OS/X, Windows, POSIX), with at most a couple of files and with no external dependencies. ...

I have the following three classes class A { public: virtual void f() = 0; }; class B: public A {

The Felix project requires people to help test version 1.1.2 release candidate 4 source build. Please go to http://felix.sourceforge.net if you're interested in helping. The licence is FFAU (like BSD or Boost licences). You will need Ocaml 3.08/9 and Python 2.x plus a C++ compiler to build from source. GNU g++ and MSVC++ are supported...

Hi I hope someone can help me out with a very SIMPLE program about whole string permutations. That is: given a list of strings, the required outcome is a complete set of all their possible permutations. It's like character permutations of a string, but this time it is whole strings instead of single characters that have to be permuted. ...

It's been a while since I've used Visual C++ and I'm getting an exception from an unknown source. I'm writing Java JNI code, calling Java from C++. Is there any way to get more information about what's getting thrown? I've tried to catch it with a variety of catch clauses with all sorts of types. The only catch that works is catch(...). My...

I need to help in my assignment. I need to wrap a text with the following indications: 1.If you have reached the end of the line (number of characters on this line >= 40) AND you have reached the end of the current word, start a new line and reset the number of characters on the line to 0. The end of a word will be denoted by one of these: ...

I need to edit an old dos program that was written with Microsoft C/C++ 7.0 (circa 1991?). I have the orig. MS floppies, but no MS 3.1 OS nearby. Can I install this package on a machine with Windows 2000? I have no other developer package by MS. Thanks.

Hi everyone! I need your help! I'm writting a program to comunicates a PC with a PinPad trought serial port... I'm using _bios_serialcom from bios.h... But when I tried to send some data it doesn't work and the return code from _bios_serialcom starts with 8... I don't know what I'm doing wrong... Any help would be appreciate! Here is my...

How do you add an n-bit number in C? Regards, Sri

I am new to c++ programming I have Borland Turbo c++ ver 3.0 I copied the installed Tcc files from my friends hdd in a cd and pasted it directly into my hdd at d:\lang\tcc\ when i open tc++ it tells invalid directory. Nothing works even the sample files in that folder also does not run. I am sure the codings are perfect because they work in...

Hi, I'm having some problems working with two-dimensional arrays. Here's the story. I got two 50x50 matrixes (is that the plural of matrix?) defined at compile time. I want to work with them inside a for loop, but depending on the iteration, one is the real one and the other is dummy. At the end of the iteration I swap them. I'm working...

Hello! I am new to GCC.I've abt 4-5 yrs of experience in windows 'C' programming.I find GCC much slower than turbo or microsoft compilers.Anyway I wrote this small piece of code to calculate process time .The code works fine in windows compilers but gives erratic output in GCC.What could be the problem? code--> .... #include <time.h>

Hello, I have a basic question related to datatypes. I am trying to read a value using Microsoft's ADO recordset from a field (lets call it 'Price') with datatype decimal(19,6) => 19 = Precision, 6 = Scale 1) When I read this field into float datatype. I get a value 1.9000, which is correct. But when I read its value in a double datatype...

Hi! Could anyone tell me how to find the square root of a number without using the sqrt function. I did it by using Newton's Formula. How can it be done by using the Binomial Theorem/Taylor Series? Is there any other way of doing it rather than using series? Thank you, Priyam

Here is the problem. There are two constructors of the same class ~~~~~~~~~~~~ CClass() : param1 (0.5), param2 (100000), param3 (NULL), szPath (NULL) { }

A straight forward Q from C newbie: What is the limit of INT variable type? I'm writing a code to calculate the sum of odd/even numbers between a given range, and I want to limit the number size so it works (e.g, give an error message if the number given is too big).