C / C++ Forum

I want to go through a std::list backwards.... std::list<mytype>::reverse_iterator it; \ for (it=out.rbegin(); it != out.rend(); --it) { ... }

When printing a floating math result I sometimes get the following: -1.#IND00 Can anyone tell what this means and how to avoid it? Thank you,

is it possible not to decrement the top variable after we remove(or retreive) a file from a stack >MY IDEA is:> if top is not decremented the stack is like it has some files existing in it with the top most file empty >i.e, something like hiding the files by one step (or one position of stack) >i.e,if someone tries to extract the top most...

Hi guys, I have a question regarding learning C++. I graduated with a Computer Science degree. recently I have found out that I need to learn languages better and professionaly. I am interested in learning for windows programming also I have a questions where should I start. I know the basics of most of the languages. I need to learn how to...

Hello, I have a simple print output questioin. What I'm trying to do is print an array of lenth 20 which holds 20 ints in the form of five columns and four rows. like this below 12 80 90 6 7 1 6 99 8 9 8 3 5 3 12 9 4 2 2 15

Hi, I'm experiencing an annoying issue. Here is a simplified idea of what I am trying to do. Inclusion guards aren't shown for readability. I hope this isn't too confusing; I don't think a description would be as clear as an example. ----------- class ParentA {};

Hello World, the following code throws this error: error c2039: 'z' : is not a member of 'a' #include <iostream> using namespace std;

Can someone explain what am I doing wrong? Header: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ class CMyBase { private: CMyBase(const CMyBase& obj); /* Disable copy constuctor */ void operator=(const CMyBase& obj); /* Disable assignment operator */ protected:

Hi, First I'll state my over all goal = a text based game with several rooms that have several exits as my first real program that I've done without the help of a book. I can make a normal vector object out of a custom class, I can even use a single object of a class that has vector data members, but If my vector object of a custom class...

Below is a program I did to recognize a Finite State Automata for ASCII (J+H)*. I got that one working but im having trouble getting the NFA program to work. I really desperately need help! My NFA has initial states: 2 and 12 ending states 2 and 12 I need help to switch program below from FSA to recognize NFA. I was...

The c++ program is: #include<iostream.h> void main(void ) {;} Now without affecting the above two lines if I want to print the "hello", how to do that..Please provide me the solution sudhir

Hi in a month i will have to start a multimedia project for the university. I want to do something related with handling graphic files, so i started to read several file format specifications and finally i decided to choose PNG since it looked the most simple format. I did some silly code to test it and i found some trouble, lets see if you can...

Hello Everyone, I am breaking my head with this problem. Please help me out. Let me first explain my problem : Here it is: I am working in realtime environment where i will be creating logfiles internally while my system is running.

I defined a pure virtual function like virtual void sum()=0; <--- pure virtual function but If I defined a virtual function in a base class in case of multilevel inheritance for the base pointer to point the right function with same signature in base and derived class like-- virtual void sum() { }

If I have a baseclass A and have subclasses B and C, can I make a parametrized constructor for A, say A(chooseClass), which then uses the parameter to do: A * p_theBaseclass; if (chooseClass == 0){ p_theBaseclass = new B; } else { p_theBaseclass = new C;

ÇóÖú ÇëÎʺ¯Êýstrtok()ÊÇÈçºÎ¹¤×÷µÄ£¿ Èç¹ûÎÒÒª½²Ò»¸ö×Ö·û´®¸ù¾Ýijһ¸ö±ê־ʵÏֶַΠ³ýÁËʹÓÃstrtok()»¹ÊÇ·ñÓÐÆäËû¸üÓÐЧÂʵĺ¯Êý»ò·½·¨£¿ лл help!! how about the strtok() function? who can tell me how the fnction strtok to deal with the string?

Hi All, Except function pointer to a static member funciton of a class (or a function). As the following code, I could pointer a non-static member function of a class. And "Equal" was printed, the pointer has meaning. But how can I use it??

I am new to C++ programming, can somebody explain what is this me_xx is it a type name or instantiation of class Final. And also how to use me_xx ? struct IViewObjectEx { public: void solv() { }

If you are dealing with one PCI card, is there a way (from within a dll) to find out which PCI slot that card is inhabiting (1 or 2 or 6, etc.)? It doesn't matter if the solution is MFC, or straight C++/C, just has to be on a Windows machine. Thanks in advance.

I have a program that outputs the following to the screen (through visual c++) 9999999999, which is stored in a double. I would like to keep the number the way it is, but every time I output it (after converting it to a cstring), it becomes 1e+010. I've tried many different formatting ways, including stringstream formatting, sprintf(buffer,...

Hi Can one implement dynamic field names in C++ and how ? I have been wrangling with that problem for a while now and I can't come up with a solution. The worst of the matter is that I am a newbie in C++. I believe one has something like this in python and in matlab and some other languages.

Can someone remind me of the syntax for a function that returns a pointer to a member function? The functions are going to be defined at the declaration. They will take no parameters. I've given the pointer members here. TColor const (TuserInterface::* pointerToGetPointColourFunction_)(unsigned int const) const; TColor const...

Hey everyone. This is much more of a general question than a code-specific one. For class, I need to write a text-based adventure game. I know that I will be using classes to implement different aspects of the game (player, rooms, traps, etc.) and was wondering what are the limitations on classes. As of now, I know they basically define a...

Hi MegaBrains, Working in Dev-C++ I defined the following structure #define NO_SECTIONS 6 struct Track{ int Number; int noElems; float x_pos; float y_pos;

hi, I have a software which uses huge STL data structures. Since STL retains its mempool, the memory that is used is not given back to the system. Now consider a simple class: MyClass *c1=new MyClass; Suppose I do a million of these too, then it takes up all of the memory