C / C++ Forum

I am reading "Joel on Software" these days, and am in stuck with the question of "how to calculate bitsize of a byte" which is listed as one of the basic interview questions in Joel's book. Anyone could give some ideas?I am expecting your reply. David.

i have if(i==1 && func1() ) do something if i!=1 , func1 doesnt run at all this is in my compiler is this because the compiler or because the stantard can i rely that in any system func1 will never run if i!=1 (so first agument is checked first)

Let's write a header file which has all sorts of things in it which help a programmer overcome what some people may see as "warts in C++", or maybe things that are just more convenient or nicer to work with. For instance, if you want to default initialise something, you have to know what kind of type you're dealing with. A) Intrinsic int...

Disclaimer: I'm new to C. I'm building a simple text based program and I'm not sure I'm designing it correctly. What I have is simple and it works but it just seems weird. Is there a better way? I do still have some debugging code in the subroutine to print out the key pressed. Basically menuinput() waits for the key press, and passes it...

I recently bought this book, and wanted some recommendations on what are the most important lessons one should learn from this book. i.e. something that comes up frequently in large C++ based designs and will be useful to me over and over again. I am an undergrad student so I don't run into problems involving large projects (as I have never...

Is there a findbugs type tool that analyzes C/C++ code? Thanks.

Hello everyone, What are data type qualifers? - Kuljit Singh Tomar ..

I have a question about potential memory leakage in a 2 dim array I have. If I say: vector< vector<int> > vec; vec.push_back( vector<int>() ); // initialize the row vec.push_back(1); vec.push_back(2);

Hello all, I sometimes make use of global variables within modules, which I denote with "static" so that they will not be seen outside the module, and will preserve values between module calls. Recently I was looking back at a rather important function and found I'd forgotten to put the static declaration in place. I'm not worried about...

Hi there everyone .I have a problem: I want to run my C/C++ program on a PC with no operating system.I mean a boot programm written in C/C++.How should I do that ?

Could anyone explain how to write this sample program correctly. I need to convert an integer to a string. However, I would prefer to convert the integer to char array. But I didn`t want to use "itoa". And I am not that familar with using "stringstream". And is there better approach to converting integers to char arrays. #include <iostream>...

What is the use of This ptr.Follow the code snippet. class this_pointer { int data1; public: int getdata() { return this->data1; }

Hello, I am writing a C++ class, as follows: class A { ... private: int i; B b;

hi guys, got anything on this issue?

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Well, I got through those other hurdles, but now I am stuck with trying to get an iterator to work. I am having a problem with trying to iterate through the STL list container that I set up. I have the #include<list> and the using std::list; and then a using std::list<int>::iterator; but I get an error that says, "p3a.cpp:12: error:...

What advantages does sscanf offer over scanf? I had the following code: #include <stdio.h> #include <string.h> int main(void) { int start, finish, values;

Hi, I wrote a template to use copy() algorithm, called copyAll: template<class T> void copyAll(const T& src , T& dest ) { copy (src.begin(), src.end(), back_inserter(dest)); } but when I call it, I get a segmentation fault: Thread (Suspended: Signal 'SIGSEGV' received. Description:

hello everyone: I want to programming c++ with asm to simulate the getch(). getch() is included in <conio.h>, it's function is to get a character from keyboard, but not echo. my code as follow: char my_getch() { char chr;

Is there a way to write code like #include IMPLEMENT_THIS(my_class, my_member_type) for what looks currently like #define __C my_class #define __MT my_member_type #include <my_implementer.i>

We have been studying tail recursion in my computer class. The prof told us that some compilers will turn a tail recursion into an iteration thus allowing many, many function calls to the recursion. I have proved to myself that the two flavors of VC++ I have will do this but I cannot get the GNU G++ compiler to do so. It is run in unix on...

Hi, to output the private data of a class I want to overload the operator<<. The Output should be written in a string-variable. To do this i have written the attached code: But the program-compilation aborts with the following error message: StreamKoord.cpp: In function `int main()':

I have the following header file generated by Java JNI's header file generator (see bottom). Obviously I will write a source file which will provide an implementation of these methods. I have a few questions regarding this: 1) Where is the class name defined? Is this a C++ class? It says "class TestAPIMsg" in a generated comment but I...

Hi! When are multiple definitions of global variables with the same name considered legal in C, and how is it different from C++? It appears that in terms of assembly language, some C definitions are translated to "weak" symbols, in which case multiple definitions are merged by the linker, while some become "normal" symbols, triggering...

Hi everyboy, I'm working in an IOC-IBM (IBM open class) replamecent library. the code seens confused but , no, isn't. #define INumber long class IString : public std::string { private: ... // some control variables