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Member Avatar for cbreeze

I'm not really sure if I understand your problem, because as far as I can see you are already have all of the knowledge to solve it. Your question is how to pass the two matrices to the thread that is going to multiply them. And you say that you …

Member Avatar for Tedi_1
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Member Avatar for ankit,joy

Takes about a 2 second Google search... probably less: [url]http://www.yolinux.com/TUTORIALS/LinuxTutorialPosixThreads.html[/url] [url]http://www.boost.org/doc/libs/1_45_0/doc/html/thread.html[/url]

Member Avatar for sumitlubal_1
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Member Avatar for Kesarion

webhost.com won't allow you to connect to the MYSQL database remotely. Try to ping the domain: C:\Users\thelamb>ping mysql9.000webhost.com Pinging mysql9.000webhost.com [10.0.0.23] with 32 bytes of data: 10.0.0.23 is the local ip on 000webhost.com where they run the mysql server.

Member Avatar for Ancient Dragon
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Member Avatar for ekin5683

[code]if(data[j] == ayat)[/code] This comparison will only work if the user enters the exact string that is in the data array. This is not what the question asks, you need to come up with a way to compare parts of(the entire student ID, or part of the student name) the …

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Member Avatar for pato wlmc

i is generally used for loop counters.. but no one is forcing you. Specially if the body (the part between { and }) of the for loop is big, you might consider using a more meaningful name for the loop counter. There are a lot of 'naming conventions'.. each with …

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Member Avatar for tomtetlaw

There is nothing wrong with this snippet (but yes, use dynamic_cast). Maybe you set the breakpoint wrong, You're saying something with a DLL and an EXE, so if the code of Main() is in the DLL, how did you set the breakpoint? You can try instead to show a MessageBox.

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Member Avatar for shadowscape

How about instead we help you solve what is wrong with this code. Now, to do that.. we need to know what you mean with 'doesn't work when called'. This sentence alone is not very helpful: Does it crash? Does it just it give output, but not what you expect? …

Member Avatar for JasonHippy
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Member Avatar for littleleaf

Naturally, you can have multiple connections to one port. Just think of an HTTP web server serving web pages to thousands of users connected on port 80. The way you distinguish between clients is by socket number. Now, you falsely assume that every time accept (or any WinSock functions) returns …

Member Avatar for littleleaf
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Member Avatar for sinatra87

When you return from main, your program is terminated, this also means that the console window will close. In Visual studio, if you execute your program by pressing 'Ctrl + F5' it will not immediately close, instead it will wait for you to press a key. In other situations, you …

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Member Avatar for peq

And now we have to guess what the problem is, right? Why don't you help us out and tell us what you're having problems with, ok? Makes things a lot easier for the people willing to spend time trying to help you.

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Member Avatar for ragnarok511

Your question is impossible to answer. How am I suppose to give a value to how difficult it will be for you? All I know, from my own experience, is that for me it is easiest to learn a language by just starting to write a project in it. This …

Member Avatar for thelamb
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Member Avatar for IndianaRonaldo

[code=cpp] char* a[10]={"asd","QWE","ghj"} [/code] On this line, you are assigning const char* (everything between "'s) to a char* (elements of a). So when you try to modify something at a[1][1] you are trying to modify a const char* indirectly. Because this constant data ("asd", "QWE", etc.) is stored in a …

Member Avatar for IndianaRonaldo
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Member Avatar for sergent
Re: OS

There is a big OS development community here: [url]http://forum.osdev.org/index.php[/url] with a wiki: [url]http://wiki.osdev.org/Main_Page[/url] Usually, hobby-OS projects are compiled with a GCC cross compiler. There is a document on the OSDev WIKI about how to set this up. In early stages, the kernel can not depend on anything from from libc …

Member Avatar for sergent
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Member Avatar for cableguy31

You can use (win)pcap to gather network data... it's probably a bit over-kill for your solution though. If you're doing this on Linux, why not make use of /dev/random? On Windows, why not use 'CryptGenRandom()'? If you somehow don't want this, I think easier randomness can be obtained from mouse …

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Member Avatar for rannamaa

When you pass an array to a function, information about its size is lost (unless the function only takes arrays of a certain size, e.g. void foo( string arr[100] ); instead of void foo( string* arr ) or void foo string[] arr) ). Since this is a C++ forum, you're …

Member Avatar for rannamaa
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Member Avatar for apanimesh061

_TCHAR is typedef'd as 'char' when your project uses 'ANSI' settings, it is typedef'd as 'WCHAR' when your project is unicode. wprintf is just like printf, but instead it takes a const WCHAR* as input, not a const char*. L before a string literal ("string") tells the compiler that this …

Member Avatar for Narue
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Member Avatar for maybnxtseasn

Yes there is, e.g. in the 'singleton' pattern. Or when you have a global static class that holds objects that should be modifiable. Usually though, you are right that you don't want to do this. But returning a const& is very common, for example in getter functions.

Member Avatar for Narue
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Member Avatar for thelamb
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Member Avatar for programing

I'm not going to read your code, it is messy. In general, say you have two singly linked lists p and q. To link them together, you can simply make the last element in p point to the first element of q. In pseudocode: [code=cpp] LinkedList p,q; // traverse to …

Member Avatar for arjunpk
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Member Avatar for mattloto

The problem is in these lines: [code=cpp] Point start, end; Point(double x, double y) { this->x = x; this->y = y; } [/code] Your Point class has one constructor, that takes two arguments. However, no where in the Ray class you tell it what the arguments should be. So the …

Member Avatar for mrnutty
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Member Avatar for Agni

I'm not sure if this is what you mean, if not, can you give an example what you're confused about? [code=cpp] struct base { virtual void test() {} }; struct derived : public base { void test() { } virtual void test2() { } }; int main() { derived* d …

Member Avatar for Agni
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Member Avatar for 02marks

I suppose that is a debug assertion you're getting? You should also mention on which line (and don't put spaces in the code tag). Usually it means that you're accessing some_vector[size], but since the vector is indexed from [0...size-1] this is out of range. Without proper code tags your code …

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Member Avatar for tdba.316

Your comments are a bit excessive, I know this is something very personal but generally you'll want to have few comments that help understand the code, not comments that repeat what the code says. Don't take this too harshly though, I am really a comment-minimalist. E.g. [code] #include <iostream> // …

Member Avatar for tdba.316
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Member Avatar for lalala423

Run the code under a debugger, then tell us on which line it segfault. If you run windows, you can use Visual Studio or whichever IDE you use. You can't really expect people to invest time into reading your code (or copy/pasting + compiling themselves), when you can easily pinpoint …

Member Avatar for lalala423
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Member Avatar for stemiros

You can add some 'type' variable to the base class, that you set through its constructor. [code=cpp] class base { enType type_; public: base( enType type ) : type_( type ) {} enType getType() const { return type_; } }; struct derive : public base derive() : base( TYPE_DERIVE_1 ) …

Member Avatar for mrinal.s2008
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Member Avatar for daviddoria

If I remember right, partial template specialization is in the C++0x standard. I don't know if you can do it on one member function like you want though. Haven't looked into it yet as afaik it's not implemented yet in VS. Also, the enable_if stuff Mike mentioned is in C++0x, …

Member Avatar for mike_2000_17
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Member Avatar for fadi_1234

Because 0+2+4+6+8+10+12+14+16+18+20 = 110? What do you think the output should be.

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Member Avatar for pdwivedi

Because what you're passing on line A is not a pointer to nVal, it is a pointer with value 65, and you are printing the value of the pointer. On line B you pass the address of nVal, so a pointer with value 2359119. So in the first case you …

Member Avatar for mike_2000_17
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Member Avatar for margeaux54

C++ programming language is more a reference book (at least that is how I use it). I don't know the first two books you read, but if they gave you a good basic understanding of C++ then I would try to start a project. This is the best way of …

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