General C++ Programming - C++ Forum

I'm newish to c++ and am trying to modify an existing c program that has been partially converted to c++. I want to create a derived class with some extra data...

[6 replies] Last: Thanks, yeh I totally don't like using hacks like casting etc, but I g... (by reqium)

by Nate879

How to find out if a file exists

How do I find out if a file exists?

[3 replies] Last: Typically you only check if the file exists when you want to read from... (by ropez)

by jobuny

Is anybody here good with COOKIES?

I gotta write this C++ program to receive / store cookies.....so far I'm completely lost and I can't find much when I search

[1 reply] : Study the HTTP Protocol. (by Zaita)

by inso85

Question about multimap

Hi everyone :) I want to display the contents of a complex multimap. Here is part of the code: class CPlane { public: string brand; unsigned hours; ...

[no replies]

by fedora6

DirectShow:The getCurrentbuffer didn't retreive a buffer?

Hi, I am using the ISampleGrabber and the function GetCurrentBuffer didn't retreive nothing and i don't know where is the problem my code didn't cause no e...

[no replies]

by inso85

Function that returns list of objects

Hi all, I am a new member here and I am glad to be a part of this great community :) I want to discuss with you some problems that I have with my course proj...

[5 replies] Last: Here is a working variant of info() function: void info() { ... (by inso85)

by akimatsu123

binary to ASCII and visa versa

hi, i want to write a program that takes in an input containing ASCII text, and converts it to binary in an output file. is this possible? can this be done u...

[2 replies] Last: i meant more along the lines of converting text into its binary repres... (by akimatsu123)

by shotjase

bitmap

i have a file here with all my constructors but i sitll have a problem..it wont compile and i have no idea y.. using namespace std; bitmap::bitmap() { ...

[no replies]

by slaris

I am using TC 3, and I want to know how to get the current working path.

Hey, I am a new comer to C and do a exercise( I want to program a little C app just like DOS Command 'dir' ). As the first step I must know how to get the cur...

[no replies]

by henry85

find endpoints of a curve

my graduate paper on finding the two endpoints of a helix curve ,i'll be very grateful for all talents help!

[1 reply] : Hi, You have not asked a question. Simply stated your intention. Pl... (by Zaita)

by bdeklerk

C++ problem pls help

I got a problem with the following program and dont know where to start to be honest. write a program where the main function inputs two integers, namely the...

[1 reply] : You best bet would be to start by writing some pseudo-code. This is a ... (by Zaita)

by Hypatia

An exercise in Stroustrup's book

The C++ programming language(Special edition) p.86-6: what is the longest local name you can use in a C++ program on your system? what is teh longest exter...

[1 reply] : These should be compiler specific settings. You should consult your Co... (by Zaita)

by Yogi Bear 79

implement a priority queue

A(n) _______ is often used to implement a priority queue. a. array b. heap c. linked list d. stack e. none of the above I have found text to support a...

[1 reply] : heap (by ropez)

by xTremeUser

how to find a set of numbers in an array?

let say i have 20 numbers in an array, i need to find 8 numbers that is smaller than the first element. how do i find those 8 numbers in the array? Thanks

[3 replies] Last: lets say the first element is 15, i need to find 8 numbers that is sma... (by xTremeUser)

by Avignale2

Mathy program

#include <iostream> #include <string> #include <sstream> #include <windows.h> using namespace std; int main() { double velocity, frequency, lamder...

[1 reply] : You should tell your users to input something like 3.00E2 instead of... (by XIII)

by Hypatia

Why is while( cin ) valid?

cin is defines as: extern istream cin; which means cin is an object, but while( ? ), here the type of the ? should be bool, right? So how does an object be tra...

[1 reply] : a stream object can be casted to a void* (ios's member operator void*)... (by Pepsi Boom)

by humpolec

pdcurses / ncurses?

How do I use the PDCurses/ncurses library in a portable way with C++? The problem I have is that <curses.h> (at least the pdcurses one) seems to define a lot of...

[1 reply] : Nevermind. In case anyone wonders, I put a couple of ugly #undef's aft... (by humpolec)

by teeforb

templates with systemc

Hi, Can you guys help me with this template issue? Please look at my example and error below. Here is the error: g++ -o amba -Wall -g ./bin/sc_mai...

[2 replies] Last: WOOHOO, sorry for this post guys, I have figured it out. I had to put... (by teeforb)

by gameguru007

Nested 'if' calculator - division problems

Here's the problem: we have to program a calculator that can take all sorts of input (M, m, or * for multiply, for example). Everything works perfectly, except ...

[2 replies] Last: oops stupid mistake right-o man thanks (by gameguru007)

by chaturchand

C++ Templet qustion....

Can you please help me with following c++ Templet question ? But when you try to use the two together: the compiler gives a lot of rather indecipherable er...

[4 replies] Last: The following code compiles fine for me using g++ (GCC) 4.1.1 2007010... (by jsmith)

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General C++ Programming - May 2008 (Page 7)