C / C++ Forum

#include <vector> #include <algorithm> #include <iostream> using namespace std; template <typename T> class LessThan { private:

When calling getenv() globally, the function returns NULL, yet when called from main, returns an appropriate value. #include <stdlib.h> #include <stdio.h> #include <unistd.h> //using namespace std; #define MW_DEBUG "TEST"

I was helping a coworker port some code to a new compiler (HP). He had something along the lines of this: class C { // defined in the global namespace static int foo(); }; namespace { int C::foo() {...} };

class A { }; class B: public A { void f(); }; typedef void (A::*MPA)(void); MPA mpA;

In my code I have this line: CloseOnOpenNotifier.notifyObservers( dynamic_cast<Argument*>( &OpenArgument( NotifyMsg ) ) ); which I'm getting a warning on in VC++ .net 2003 when I set the warning level to 4. c:\Source\Abyssal\source\Abyssal\CGUIElement.cpp(184) : warning C4238: nonstandard extension used : class rvalue used as lvalue ...

I have made a simple pthread program. In main I create a pthread that has a startroutine as argument which adds two integers. The output is correct so I guess the threas runs this startroutine. But when I try to use gdb on the program it never jumps to the start routine, it just goes through the main function and then returns. I use emacs on...

Hello Folks, I need to manipulate a list of char strings as follows, but when I want to delete the pointer created with new at the end, delete operator crashes, any idea? char* list; while(...) { list = new char ; strncpy(list, c_TempFilename, Stringlength);

Hi everyone! I have a doubt, when I free an alloced memory, how does the compiler know how many bytes I have alloced forward the pointer. eg: int *coiso; coiso=(int *)malloc(sizeof(int)*10);

I am looking for a way to integrate the C library documentation into emacs' C mode. Adding any linux library documentation would be a bonus. e.g hilite word, hotkey to library documentation. thanks for any help. -- Remove evomer to reply

Hi, I am a beginer programmer, i would like to know the exact difference between long and int. Why do we have two names for the same size of variable. Does the size of long and int change on various architectures.. thanks, carl

Obtained under the Freedom of Information Act by the National Security Archive at George Washington University and posted on the Web today, the 74-page "Information Operations Roadmap" admits that "information intended for foreign audiences, including public diplomacy and PSYOP, increasingly is consumed by our domestic audience and...

Hi, I am developing a C++ application within the Microsoft Development Environment 2003 (Version 1.13088). I need to get a snapshot of the memory allocations by objects. Microsoft provided profiling capabilities in Visual C++ 6 version, but stopped after that. Microsoft offers a CLR Profiler for .NET applications, but what about classic...

Since a character constant is an int value represented as a character in single quotes,so it is treated as a 1 byte integer now look at the following snippet. #include<stdio.h> int main(void) { char a='Abbc'; printf("%c",a);

Hello everyone, I recently designed a website called the DigiTrust that is designed to bridge the gap between technology content and people. My goal is to have any user go to the site, and the content will be completly customized based on the users skills and strengths. VB programmers will find a site that contains VB content, Linux users...

Hello everyone, I recently designed a website called the DigiTrust that is designed to bridge the gap between technology content and people. My goal is to have any user go to the site, and the content will be completly customized based on the users skills and strengths. VB programmers will find a site that contains VB content, Linux users...

Hi there, I am seeking a fastest way to load a BIG string and parse it as a given format. I have a extern function which return a (char *)string in BIG size. Now, I am going to parse it with a iterator as following char *str = return_a_big_size_str(); istringstream ss(string(str), istringstream::in); istreambuf_iterator<char> bit(ss), eit;...

i have a struct which defines a function call stuct TFunction { int id; // ID of the function to call UINT nparams; // No. of parameters ULONG* params // Parameter data } how can i use a Functor to execute a function as well as passing the

Hi, After making an iterator to a map and stepping through a loop, I want to delete any entries that satisfy a test from an external function. MyMapType::const_iterator iter; for(iter = m->begin(); iter != m->end(); ++iter) { a = iter->first;

consider these functions: void foo() { cout << "foo() called; } void sayhello( std::string& msg ){ msg = "something"; } int add( int x, int y) {

Hi, I'm re-writing some code that had relied on some platform/third-party dependent utility functions, as I want to make it more portable. Is there a standard C/C++/stl routine for changing an stl string to all lowercase? (I know how to do it manually, but in the interests of portability...) Thanks Steve

this is a little off topic but its also in comp.windows.programing and hasent goten a reply and so im posting it here: is it possible to loop through all top level windows using GetWindowEx(), and save all their handles in an array? i have been trying this one for a while but it dosent seem to work i end up in a never ending loop. anyone...

Hi! I'm using (the first time) GTK2 to build a GUI application under windows. Up to now everything worked fine. But now I have a problem: Im using the function gdk_pixbuf_new_from_file to generate a gdk-pixbuf. The program compiles and runs, but no images are displayed. It simply doesn't work. When I have a look at the delivered GError I...

Folks, Having spent some considerable effort in sorting out the floating point code in the I370 port pf GCC, I would now like a floating point library to go with it. From what I have seen most implementations use "Computer Approximations" by "P Hart" (hope I got that right) for all the constants. Unfortunately my local library can't get me...

Hi, Consider this code: --- beginning of code --- #include <iostream> using namespace std; class Child{ public:

Hi. I'm getting an error in my program. It doesn't occur each time even if the same things happend in my program each time I run it. There will however be different values used for calculations in the program. The error happends suddenly and at different times. I load quiet alot of data into my program. I'm wondering if there are anyone...