Beginners - C++ Forum - February 2009 (Page 16)

by ddw2003

Grouping calculations into functions

Hello all, I am just starting to learn C++ and I need a hint on how to figure out how to take things out of int main() and grouping them into functions. T...

[3 replies] Last: Only if you don't want to prototype them. (by Zaita)

by strafford

Linux: open Serial port, send array of bytes

Hi I am trying to (a) open a serial port, and then (b) write a stream of bytes to it and read any responses from the serial port. I have some code so far (w...

[5 replies] Last: I think all you missed was to populate your file descriptor set by usi... (by sweetie1829)

by eng nosha

question in OpenCv

hi, im a beginner in using OpenCV and i want to know how can i open video using OpenCV ,not capturing video from camera but open video already stored in my pc?...

[1 reply] : Head to the OpenCV forum. (by Zaita)

by porrum doctum

Initialising 2D object

Hi, I have been experimenting with a class creating 2D objects and defining functions using them. You could interpret it as a classic matrix class I suppose....

[4 replies] Last: FWIW, boost::array allows you to use array syntax to assign elements: ... (by jsmith)

by masiht

question about data types

I gave a test and i made some mistakes. Please tell me which one is true and false and why ?? short m=655534; unsigned short m=65534; unsigned float n=6...

[3 replies] Last: There is no such thing as an unsigned float. (by jsmith)

by mikac

problems with operator+

Hi, I am relatively new at c++. I am writing a code with operators and i'm with some problems in this part. Anyway, it appears an warning during the compil...

[3 replies] Last: This is going to seg fault. temp is initialized in the constructor ... (by jsmith)

by harrisoncolts88

Sudoku Solver

First off i dont want the entire answer. I would like to learn from this. I just started to program in C++ and I have to program a sudoku solver. First off I ha...

[1 reply] : I would make every element of the 9x9 matrix a std::set<> or std::bits... (by jsmith)

by masiht

question about identifier

char Character or small integer. 1byte signed: -128 to 127 unsigned: 0 to 255 short int (short) Short Integer. 2bytes signed: -32768 to 32767 unsigned: 0 to...

[3 replies] Last: char can hold only numbers, from -128 to 127 if unsigned or from 0... (by Bazzy)

by wander4heat

Using the string class

Hi everyone. I have been programming for 2 years so I am pretty new to C++ programming. I have an assignment that I am wishing someone can just explain to me ...

[3 replies] Last: In the code you posted you already have the - operator overloaded, it ... (by Bazzy)

by MPKMM

If a double variable is NaN?

Hi, folks, I wrote a statistics program to do some parameter estimation. It involves at least 100.000 loops. Some of the results are reported as -1.#IND00 . ...

[3 replies] Last: Thank you Bazzy. It did work to solve the problem. Gott bless this for... (by MPKMM)

by Brutal

error C2664 what am I doin wrong?

I am tryin to take some repetition out of an assignment and having difficulties. Keep getting C2664 errors and maybe yall can tell me wtf I am doing wrong =( ...

[5 replies] Last: You're trying to write to an invalid pointer. runner[0..SIZE-1] and ti... (by helios)

by Draimen

Using an Array of Structures in Simple Program

Hello everyone, I'm very new to C++, so bear with me. I'm trying to do some of my C++ homework at the moment and I've run into a problem. Essentially, the...

[11 replies] Last: Yes. That's because as I said. Using the >> operator will not remove ... (by Zaita)

by dman

Passing an open file between functions?

//Writefile ofstream* WriteFile(string filename) { ofstream* f; f->open("test",ios::out ); return f; } //Wri...

[4 replies] Last: Why not make the program OO, and make the filestream a member variable... (by Zaita)

by dawita

segmentation fault in Matrix implimentation.

Hello guys. When i try to run my code i get the Segmentation fault error. i cant see to find where the problem is.... my goal is to read from a txt file as b...

[8 replies] Last: http://www.cplusplus.com/forum/articles/7459/ Also, Boost has a Mat... (by Zaita)

by klxp9

Memory Error???

Hi, I have a char array declared as such: char statement First off, is this too large? I have a large sqlite statement that I st...

[7 replies] Last: +1 to using strings. If your going to use C++, then use C++ types. ... (by Zaita)

by thejmfc

strcmp - troubles compiling/running

Hello all. I'm trying to teach myself c++ in my spare time. To assist in that, I'm writing a basic program, just for learning purposes. It asks for several w...

[4 replies] Last: Just loop over it and call toupper() or tolower() on each element. The... (by Zaita)

by ldixon

Partial Arrays using negative and positive numbers

In a program with a partial array with max of 50 that contains negative and positive integers, how would you keep track of how many were filled? For example is ...

[2 replies] Last: Use a vector. (by Zaita)

by cppg2009

Win32 Multithreading Tutorial

Hello All, I am very new to Win32 Multithreading programming . I just started working on it in VC++ 6.0 in MS Visual Studio . Can anyone suggest me n...

[1 reply] : www.boost.org :) They have a platform independent multi-threading impl... (by Zaita)

by ozan

Template could not be placed on the project!!

Hi, I have a plenty of codes(source codes and header files) so I have to open a project file.I am using "wx DevC++" but when I tried to open a Project file , ...

[1 reply] : http://www.letmegooglethatforyou.com/?q=wxDev-C%2B%2B+Forum (by Zaita)

by ghamon

initializing and passing a reference (static ?)

The code below compiles fine. The only problem is that I do not want to pass the reference each time. I would like to set the reference to the BaseApp only on...

[no replies]

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Beginners - February 2009 (Page 16)