General C++ Programming - C++ Forum

Hi all, I want to parse a std::string, the delimitor is ','. For example, string s = "13123123,3453453,6546456,25345345,52534534"; i want this to be ...

[5 replies] Last: Using a stringstream and getline is another alternative. There's also... (by moorecm)

by mugilan

C++ output error

hi friends, I am doing some programming test from c++ book, about ATM machine, i manage to complete the program but the output is not working. i guess the ma...

[1 reply] : That's one big output error. What is the error? And please use code... (by RedX)

by zevikbe

a lot of logic approch a lot of hw devices

a lot of logic objects need to approch to meny devices. the solution today: interface class implemented in a single class containg all the dfevices. Problem...

[1 reply] : Hmm, i think our spam filter is broken... I didn't understand a word. (by RedX)

by thapchi

How to move a object

I am a beginner in c++. There is a big vacation right now.So i want to make a little console game as I have not learned any graphics So my question is How...

[3 replies] Last: http://msdn.microsoft.com/en-us/library/ms682073(v=VS.85).aspx Thos... (by indigo)

by phummon2

Importing 1000 Files, How To Skip "Bad" Lines In File?

Hi everyone, I'm a moderately experienced C++ programmer working on code which must do the following: (a) Import data from a lot of little file...

[14 replies] Last: I noticed that the error seems to have occurred while calling this fu... (by phummon2)

by ramKrushna

Gui Developement problem

Hi Experts I wanted to know how to make Gui that the window is in two half. by clicking on left half button the new window will be seen in the right...

[2 replies] Last: Well, it depends what GUI Toolkit you are using, so we really can't he... (by closed account 1yR4jE8b)

by ketanjoshi

c++ map implementation

Hi, I read somewhere that c++ maps are implemented using height balanced trees (red black trees specifically). Why wasn't it implemented using hash tables...

[2 replies] Last: If you use g++ you may want to look at the headers ext/hash_map (or ... (by kmw)

by kmw

conversion of a single wchar_t with toupper

Hi, I am trying to convert a single wchar_t to uppercase. In theory it should work as shown below, in practice it does not. I have no idea what I am doing wr...

[5 replies] Last: Thanks everybody. Indeed, it's a problem of std::wcout (I know, I shou... (by kmw)

by luckycusp

How can I 'pickle' my datalists

Hello, Those of you who are familiar with Python might be knowing the 'Pickle' function. With this lists can be quikly stored in a file and can be retrieved...

[2 replies] Last: Any other suggestion please? This boost asks for 2GB space on my hard-... (by luckycusp)

by wtf

Getting the name of a function, and the function that called it. (1,2)

I need to know this to help with debugging. Sorry, the library is about to close so I don't have time to post more details, but I'll edit more details in t...

[26 replies] Last: [quote=helios]My second post doesn't contradict the first one, by the ... (by m4ster r0shi)

by Ribka123

Creating a class and some member functions

Hello. Please if somebody has the time and willingness to do this program in C++ I would be very happy and grateful. Define a class Cubic that stores t...

[8 replies] Last: The coefficients of a polynomial of degree 3 - this should be a,b,c,d ... (by Ribka123)

by eriks

sprintf stackdumps on second call to class method -- first call fine...

Again, I have another post here on CPP where it might just be my ignorance of C++ (I'm an old C hacker in days past) or maybe it's just Cygwin, but I thought I ...

[1 reply] : I'm expecting logMsg to get allocated on the heap. You're never makin... (by helios)

by eriks

Private methods in classes and DRY principle

I'm an old C hack from way back. I can make my way around in C++ and know OO, so I've done some rudimentary class writing in C++ that has gotten me by, but the...

[3 replies] Last: I'll post the real code tomorrow sometime. Meanwhile, maybe I should ... (by eriks)

by aryajur

string variable cannot be assigned

Hi, I am using a string inside a structure like: struct action { enum actionCommand { DELETE, CHGE_ELEM_VALUE, REPLACE_LINKID, }; ...

[7 replies] Last: Thanks kevin, That helps a lot. I understand what was going on n... (by aryajur)

by indigo

WriteConsoleOutputCharacter not working

Hello everyone, here is my simple function: void frame() { char ul = (char)201; char ur = (char)187; char dl = (char)200; char dr = (char)188; char...

[6 replies] Last: It sounds to me like you are goofing-up with the pointers somewhere... (by Duthomhas)

by chrisname

Calculating time complexity and space complexity

How do you calculate the time complexity of an algorithm (in "Big-O" notation)? I read something on the Internet just now that said to count the number of opera...

[10 replies] Last: Ok. Thanks, moorecm, jsmith; I understand this now. Thanks alot. (by chrisname)

by Null

linker errors (something with namespaces)

Hello, this code compiles fine but I can't figure out why do I get linker errors: -------------- Build: Release in test --------------- Linking cons...

[8 replies] Last: In C, static global variables have module scope. In C++ we use unname... (by moorecm)

by antonin07130

delete array allocated in a function

Hello, I have a deallocation problem : I have several classes, and in one of these, a function is returning an array of double : double *funtion() { doub...

[3 replies] Last: That's odd. The code you posted should not break with this message. Yo... (by RedX)

by readysetgo

How to create a Checksum using logical XOR

Hi, How do you create a checksum using the logical "XOR" of all 32-bit words in a binary file? I would like to implement this in C++ rather than use a tool. ...

[4 replies] Last: Yes. I was a bit confusing really. You said you wanted to checksum all... (by Galik)

by SnowBlind

Multiple Instances of a class deriving from on instance of the SuperClass

Hi, I have a program with a class (lets call it class A) that has very large data members. I also have another class (class B) that derives its data members ...

[5 replies] Last: Thanks Guys that helps a lot. (by SnowBlind)

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General C++ Programming - May 2010 (Page 4)