General C++ Programming - C++ Forum - August 2010 (Page 11)

Hi I am trying to implement singleton class having static method. my requirement is as below: A.h Class A{ Public : Static A* getInstance(); } B.cpp...

[8 replies] Last: Related thread: http://www.cplusplus.com/forum/general/26976/ (by moorecm)

by Isuju

Media effects in C++

I've been searching all over the internet for tutorials of any kind on manipulating media in C++ and haven't found anything like what I'm hoping for. I'm tryin...

[1 reply] : http://sites.google.com/site/webcamopencv/ (by blackcoder41)

by JRevor

Division by zero.

Hello. I'm programming a couple of simple linear algebra tools, and was wondering how could i get to handle the division by zero within my own program. I want t...

[2 replies] Last: Thanks! (by JRevor)

by ibtkm

pointers

hi every body. i have one fundamental question in this code : const char* a = {"ab","bc"}; "a" array is a array of pointers but why we get it "ab" and "...

[3 replies] Last: well your are confusing yourself with array of pointers. names is arr... (by rahulroot)

by rudrikoza

How do I pass non-english characters from char* to whcar_t* on English OS

Code Snippet: Collapse int Convertchar_wchar(char* pData, int pDataLength) { wchar_t wcsQuery[4096*2 + 2]; memcpy((void*)wcsQuery, pData, pD...

[1 reply] : memcpy() copies raw bytes; it doesn't have any type awareness. If you ... (by helios)

by yoonkwun

Efficient Class Initialization

Let's say there's a class with 200 variable members that are not in an array. They are mixed types of char, short, int, and so on. I want to initialize them all...

[17 replies] Last: Yes, it's dangerous. I've already realize this point, especially in cl... (by Vegertar)

by n4nature

callback functions

In C/C++ can a called function have an ability to know the name of the calling function? May be, by accessing the stack or any other way? Please note that th...

[2 replies] Last: Not portably. It can be done using [system [debugging features]] to ge... (by helios)

by D Technodude

Speech/Object Recognition (1,2)

I was wondering how to make your own speech and object recognition. I've been working on this project and it uses both of them. Sorry for vagueness but I don'...

[22 replies] Last: My gmail account is dtechnodude@gmail.com (by D Technodude)

by merwanhade

How to fix the given compilation issue with VS2010?

I am facing issues with a project called ServiceConfigurationManager in Visual Studio 2010. The project compiles without a hitch in Visual Studio 2005, it also ...

[2 replies] Last: @guestgulkan: Thanks a lot. Your suggestion fixed the problem. I previ... (by merwanhade)

by D Technodude

File Creation Location Trouble

I made a file and tried to change it but the program made another file instead. I was wondering how to specify the file path, or even if there is a way.

[6 replies] Last: THANK YOU SO MUCH!!!!!!!!!!!!!! (by D Technodude)

by exiledAussie

Self aware objects in templates

Hi, I am trying to create a powerset template which permits both the input set (in the mathematical sense except that duplicate members are permitted) and ou...

[2 replies] Last: An interface consisting of iterators is more flexible than an interfac... (by jsmith)

by deems

GUI programming - frameworks

I have been looking into the Qt4 framework or GTK+ for developing GUIs. Anyone have any positive or negative experiences with either framework they would lik...

[no replies]

by cyberbeast

Input using data already output on the screen?

How can I input something that is already output on the console screen. For example, if the code is: cout << 2 + 2 << endl; the console screen will show: ...

[1 reply] : You cannot read what is on the screen. At least one cannot do this in... (by PanGalactic)

by eye51

passing vector : reference or value?

Hi, I have this: I want to pass a vector of Base class, to MyClass and in MyClass resize and use further. class Base { public: ..... ......

[6 replies] Last: I'm coming in without reading any of the above but Disch wrote a nic... (by mcleano)

by Syerjchep

SDL+OpenGL objects don't render if z axis isn't 0.

So I have this, medium sized code chunk, as a part of a game I'm starting to make: #include <SDL.h> #include <SDL_net.h> #include <SDL_opengl.h> #include...

[1 reply] : And here's the draw cube function: int drawcube(float x,float y,fl... (by Syerjchep)

by Null

Variadic functions

How can I use functions from cstdarg header in this situation? void x(...) { // ? } int main() { x(11,12,13); } I know that it should be void ...

[4 replies] Last: OK, thanks. (by Null)

by cyberbeast

Problem with dates!!

Hi all, For a portion of my code, I need to either input a date from user or capture the system date. From there onwards I have to add 7 more days to the ac...

[4 replies] Last: for 1. I can use setfill(). yipee! :) could u still suggest a meth... (by cyberbeast)

by Vijayan

Comparison of 3 variables @ a time

Can v compare 3 variables @ d same time without using logical operators ? Like..., if(a==b==c) { cout<<"equal"; }

[1 reply] : nope, that would be equivalent to ( a == b ) == c a == b will re... (by Bazzy)

by D Technodude

Arrays

I was wondering how to make it so the user enters text and the computer enters that into an array. Something like this: string word ; cout << "Enter \"Hel...

[4 replies] Last: THANK YOU!!! (by D Technodude)

by agoswami

Print number in diagonal format in matrix

Hi. I tried to print number in matrix in following format but could not reach the solution .. does anyone have idea Ex. I have matrix a 3] = { 1 ,...

[2 replies] Last: sorry it is only me ... i think by mistake it pasted twice on this for... (by agoswami)

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General C++ Programming - August 2010 (Page 11)