C / C++ Forum

Hello all, I'm completely new in theory of C compiler and it's support for multi-core hardware. Does anybody know whether compiler for multi-core and SMP/AMP/BMP does need some special internal features? I'm not talking right know about libs, just translation of the C code into the instructions. I still understand that the most responsibility...

Does anyone know any C/C++ source code for parsing CGI input string into name/value pairs? The only condition is not using any templates.

Hi everyone, I was trying to implement a design when I've found what seems a limitation of standard C++. I can't specialize an inner class in this way: template <class ARG> template <> class Outer<ARG>::Inner<int> {

Let's say I have a hacked-up polymorphic container that holds variables of type: struct poly { union { int *i; double *d; complex<double> *c; } value; char type;

Hi, I have a class with a STL vector as it attribute. How can I create a method which just return a 'read-only' view? (i.e. the caller of the function can only read the vector, not write it)? class A { private: vector<int> _v; public:

If struct keyword is support the all functionallity of class keyword, only differance i have found is accessibility of member is different in struct is public and class has private. This accessbility feature user can got by using Accessor public, private or protected. So why class keyword is implemented in C++.

Hi, I wrote few filters working on streams of bytes, in example enciption, UTF-8 decoding and such. Now I wonder how can I turn them into classes derived from std::stream(?) or in other way to use them with code working on std::stream std::ifsteam and such. Keyword codecvc is probably related. With "connecting to std:: streams/strings" I...

Hi, I'm a python programmer that's started to play a bit with C as I'll probably have to make C extensions eventually.. I made this little program that I'd like to get feedback on, it's basically a find substring and return pointer to it function and tests for it.. Could this be done better/differently? Is anything fundamentally wrong?

what is its output and why? #include<iostream> using namespace std; #define abs(x) (x>0 ? x:-x) void main() { int a=3,b=5;

How to create a buffer of memory in C++, whose size can dynamically grow and shrink as needed? This is used for buffering input/output. Several variable types, such as int and double are read and written in this buffer in specific order. Currently I use a fixed size array: char *data = new char; I thought about std::vector<char> but can I...

Dear, The thing I would like to do is to write a function(count) that counts the occurence of words in my input. If the vector is like "st1" "st1" "st2" "st2" "st2"

Hi, I have some code which compiles with Metrowerks CodeWarrior 9.6, Visual Studio 2005 (both targeted to Windows). Or, at least, it did until I started using size_t. CodeWarrior has size_t declared in the std namespace (and complains otherwise).

Hi, The following code compiles with Comeau Online, but not MSVC 8.0. Comeau issues a warning that return 0 is unreachable. #include <sstream> #include <iostream>

Hi, I have been struggling with writing a program for a few hours. The requirements are that: """You will be writing a program which will determine whether a date is valid in terms of days in that month. We are assuming that the year will be valid 4 digit integer. So you don't have to think much about that(in terms of validation) except for...

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Functors taking 1 argument for operator() should inherit from unary_function and those with 2 arguments should inherit from binary_function. If a functor has zero arguments for its operator() should it inherit from anything to make it adaptable? I've not heard of anything before which is surprising. If books don't talk about it then its an...

Could you please tell me which is the most efficient of way writing a BOOLEAN array to a file. Thanks a ton. Speed

Was wondering what people think of this header file: #ifdef MALLOC_H #define MALLOC_H # ifdef __cplusplus # include <cstdlib> struct voidptr_ { void *x; template <typename T> inline operator T * () {

Is there any difference in: template <class T> vs. template <typename T> ?

Hi, I am using two STL maps as data member for COM server with VC++6.0.These two maps are unrelated in the sense that they are storing different data. first map is of type(6 MB in size) std::map<long,ISumInfo*>

here is the source code: #include<stdio.h> int main() { float f; scanf("%d%f",&f); printf("The float is %10.5f\n",f); return 0; } when I input 12345.11111,the output is 12345.11133.

Scott Myers discusses the 'costs' of exceptions even when not being used vs. when you have a try/catch block vs. when you have to throw an exception. He leads you to believe that these costs are quite significant with a 10% increase in code size and slow down just by having the capability to use exceptions. He admits to not really having...

class Monkey { int cow() { static int k = 4; ++k; return k; }

Am trying to write a program when given a folder name path, it will traverse/recursively go through the whole folder & sub-folders, opening each file. How can I go about this in C++? I want to write a ASP, ASPX, PHP, JS, XSL comment remover for web applications using state machine. I have found a C/C++ comment remover and will modify...

Hi, I'm looking for a c/C++ library (suitable for Linux and Windows) to parse pdf documents. I only need the plain text and defined page breaks as output. Parsing trough a system ("pdftotext ..."); does this for me, but I'm looking for a more elegant way using a library. xpdf does not come with any library nor API documentation. Thanks...