General C++ Programming - C++ Forum

New/Delete with a Class that uses malloc (1,2)

I have a simple question. I need, for particular reason, to use malloc/realloc and free into a class in this way Class A { DATATYPE * pointer publ...

[21 replies] Last: Probably I got the name only from my confusion. Thank for explainatio... (by Nobun)

by evanescence

[SOLVED]problems with an array

Hi! I have some problems with a program that I tryed to make this morning.It has to make an array of up to 25 elements, show the elements on screen, write the e...

[3 replies] Last: thanks :) (by evanescence)

by Zee Bidds

operators

I have read tutorials on C++ but nowhere does it explain the use of the new operator. I understand to create an instance of a class in C++ you just decl...

[2 replies] Last: http://www.cplusplus.com/doc/tutorial/dynamic.html new is used to a... (by helios)

by Zee Bidds

Data Types

Hi all, I'm on Mac OS X using C++ to load a bitmap image for texturing in OpenGL, however the few tutorials i have, use WORD and DWORD data types in the BITM...

[6 replies] Last: Hey thanks both of you for your help. Much appreciated. (by Zee Bidds)

by bmcutler

CLASS SONG ERROR

/**************** Program #1 class that models an electronic music track ****************/ //Song Class #ifndef SONG_CLASS #define SONG_CLASS usin...

[1 reply] : ofstream ofile("song.out"); ofile << song.title << endl; ofile <<... (by psault)

by afraidofdark

I cannot trace my pointer

hello, here is the same stuation that I lived with my project. I am sending a variable to my function, function is doing something with a temp variable and tha...

[2 replies] Last: thank you, it is working now. (by afraidofdark)

by William McHugh

Assitance with Simple Link List

I am trying to create a program (very simple) to gather a users desired x points and y points, store them into a list, and out put them like (x,y). But, I ca...

[14 replies] Last: Thanks guestgulkan, I move to fast, one of m major flaws, and found th... (by William McHugh)

by chuiy

strange error when iterating through a data array

hey, I'm using Dev C++ and the end of the marking periods coming up at my school, so being the 13 year old beast I am I decided to write a program that average...

[3 replies] Last: Well your approach to header and variable inclusion is most novel and ... (by guestgulkan)

by ejubenville

How do I emulate fsync with ofstream?

I'm porting a program that used stdio file facilities to use std::ofstream instead. The original program uses fsync to force a file's buffers out to the disk. T...

[4 replies] Last: Thanks for the link to the info on _commit. That's the equivalent of ... (by ejubenville)

by brentc628

Code has nothing I can find wrong, but still won't work.

I am writing a program that reads directory data from a file and it won't work but I can't figure out whats wrong with it. Any help? // start of code #i...

[2 replies] Last: Thanks, I never would have done that, I was under the impression that ... (by brentc628)

by jrohde

#pragma comment in Dev-Cpp

I've seen it used a billion times, but when I tried to use it in my Win32 Project in Dev-Cpp, I still get the "undefined reference to..." errors, just as if I h...

[1 reply] : #pragma directives depend on the compiler, #pragma comment() is fo... (by Bazzy)

by nandlald

Can't compile in Debug but can in Release!!!

I'm using VC++ 6.0 with SP5. I have a source file in my project that refuses to compile in debug mode but will readily compile in release mode. When I look at t...

[2 replies] Last: Change the compile options of your file to just run the pre-processeso... (by kbw)

by bmcutler

CLASS: SONG

//Song Class #ifndef SONG_CLASS #define SONG_CLASS using namespace std; class Song { private: string title; //dynamic allocation string album; ...

[2 replies] Last: You've written the default constructor twice: Here: //Implement a c... (by guestgulkan)

by catch patrick

What's the difference

I have seen this "style" of coding in many places and have yet figured out why someone would use one "style" versus the other. I the best of my knowledge they ...

[4 replies] Last: That explains a lot. Thanks (by catch patrick)

by cypher51

fastest way to XOR 2 arrays of boolean?

Hi, I have two arrays of booleans, both have the same known size. I would like to perform a XOR on the arrays and store the result in a third boolean array ...

[11 replies] Last: Assumption is the mother of all f*ck ups Haha that made me laugh ... (by Mythios)

by jtchil0

Vector of Template

I'm trying to make a vector of template. However, I want to store the template with different data types. For instance: class A {}; template<dataType> class...

[2 replies] Last: But that doesn't solve the original problem. Once a B<T>* is casted t... (by jsmith)

by ishii

Please find out errors and correct the code please

HI I have written this code but there is errors in it and not going to be compiled please help me out after removing errors.. i need on urgent bases becoz i h...

[3 replies] Last: Additionally, you need to walk through this code very carefully and as... (by seymore15074)

by pchahar

default value for templates

Hi, I need to implement a method fun() inside a class classA. The method fun() should be capable of receiving at most 3 arguments with any data type. I was f...

[11 replies] Last: I'm not sure for the data types. Hence, the issue is still open with ... (by pchahar)

by guykun

Transparent TextBox

I've looked around the internet endlessly try to find a way of doing this in C++ and haven't been able to find a single working method. How would I go about ...

[3 replies] Last: Ask on Win32 ng news://comp.os.ms-windows.programmer.win32 for the ... (by george135)

by gundalav

How to iterate and print Boost Ublas' Vector

Hi, I tried to print Boost Ublas vector here. But somehow it gives error. What's the right way to do it? // Begin #include <boost/numeric/ublas/vecto...

[1 reply] : You forgot the comparison, v1.size() is always true. (by kbw)

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General C++ Programming - January 2009