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General C++ Programming - December 2009 (Page 11)

Hi here. I have a question about connecting to mysql server through C API. Does the client program have to initial a single instance of struct MYSQL for e...

[2 replies] Last: Hi melkiy, Thanks, If I read manual careful enough, I should find a... (by liangxiao)

by pattaway

no matching function...

When I try to compile this program, among other error messages, I get one that says "no matching function for call to 'Matrix::Matrix()'" and I don't know why. ...

[5 replies] Last: The A would be a good use if A was an unidimensional array. Consideri... (by Ashden)

by zooeyes

extracting emails from txt file

Im trying to figure out how to filter out emails from a form. Its working to a degree in that if the email address is staggered from a name it works and pulls...

[1 reply] : This is because you are extracting email on the basis of @,this one is... (by mogha)

by beavisbeast

Struct error

The database that i need to use is in chronological order by presidents names.The chronum is what number president the particular individual was.The pointer(nex...

[10 replies] Last: What type did you declare temp as? And what type is plist? (by PanGalactic)

by ADizzle491

Overloading the output operator << as a friend

Ok, so I've searched, I've googled, I've tried a lot of different things but nothing ends up working for me. My assignment states that I am to overload the outp...

[3 replies] Last: Huh. See the second post: http://bytes.com/topic/c/answers/63289-templ... (by helios)

by felipelc

Decimal in C++

Hello, I will write a financial program in C++, but I don't know how to deal with decimal numbers. I know that if I work with floating-point types I will hav...

[3 replies] Last: Well, 9999999999.00001 is well inside the 64-bit limit, but if what yo... (by helios)

by JRevor

Return not returning!!

Here is the code segment which doesn't work template<class RECORD> TPointer FileBuf<RECORD>::Read(RECORD& r, const TPointer pos) { if (fs.is_open()){ ...

[6 replies] Last: Thanks helios. Yeah, it seems the problem is related to that. When i ... (by JRevor)

by kakashi316

output problem

Im writing a program to print binary/bninary search trees. I can get the binary trees to print,but not the binary search trees.im going to try to give the most ...

[4 replies] Last: ok, i have a more specific question that does not involve alot of code... (by kakashi316)

by koenigs

A question on inheritance

Suppose I have a number of similar classes that contain some variables and some functions in common, call the classes B,C and D, and supposed they are all deriv...

[3 replies] Last: Thanks guys for the speedy response! I hadn't thought of doing it tha... (by koenigs)

by DRJTower

Copying void * data

I have a function int CHAN_SEND(CHANNEL_t Channel, void *stuff, int size) And I want a copy of what stuff points too. size is the size of the data. so ...

[2 replies] Last: Thanks so much!! I new there was probably a c function for this. (by DRJTower)

by n4nature

Downcasting with private inheritance

Can anybody tell me what is the prob here? #include <iostream> using namespace std; class Animal { public: virtual void speak() { cout << "Anim...

[3 replies] Last: You want polymorphism, private inheritance has different purposes: ht... (by Bazzy)

by NGen

Handling the Mouse

Is there a mouse-equivalent of the functions GetKeyboardState or GetAsyncKeyState? I'd rather not have to go through window procedures just to see what's going ...

[5 replies] Last: Solved in http://www.cplusplus.com/forum/windows/16988/ (by kbw)

by Asteroth

std::map does not compile when value type is template

Hello This code: template <typename MyT> inline void myFunc(MyT value) { std::map<int, MyT>::iterator myIter; } gives this error: error: ex...

[4 replies] Last: I've tryied in visual studio and it compiles indeed, but I need it for... (by Asteroth)

by solidcrowd

Edit programs for money

I will have $5 paypaled for each program that is modded. Here is one of them. Shouldn't be hard at all for you programmers: #include <cstdlib> #include ...

[1 reply] : I'll do it for USD 300. (by helios)

by Wr3ckinCr3w

Vector Of Structs Problem

Hello, I'm having problems passing a vector of structs to a function. What I'm trying to do is create a program that implements of a vector of structs which hol...

[7 replies] Last: If the argument passed is an empty vector, it won't work (by Bazzy)

by kenshin143

Making a program "skip" to another part.

I'm making a game and i was thinking about what happens when someone dies and i want to make it so they go back to a certain point like the last shop or w/e. ...

[14 replies] Last: So is it that depending on user input you want to go back to some part... (by manojr)

by NickPaul

Networking in C++

Hey all, I'm ready to start looking into networking - in the middle of making a multiplayer game haha can anyone point me in the right direction? I've seen ...

[2 replies] Last: Awesome :) Thanks for that! Any good tutorials for the Boost library? (by NickPaul)

by rachitagrawal

Out of range

x = k*s; while (x > n) { x = floor(( k*(x-n) - 1.0 )/ (k-1.0) ); count++; } In the above code n, k, s integers <...

[4 replies] Last: Problem Solved. Though x was unsigned long since k and s were integ... (by rachitagrawal)

by Una

2D dynamic array of pointers

Hello, Could anyone pls explain to me how to create a dynamic two dimensional array of pointers. I searched the google, but I did not find anything useful th...

[7 replies] Last: operator = needs to be overloaded for cluster_node. (by manojr)

by Melchoire

base class undefined, class type redefinition and lots more

I am practising inheritance for my computer science class but I'm getting a lot of errors and I have a feeling it's one of those errors where just one small cha...

[5 replies] Last: Are you sure you put header guards in place, in addition to stripping ... (by JivanAmara)

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