51,593 Topics
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| | Hi, I am using msxml4 for my project with an xml file of about 10mb. I read this xml file multiple times as it gets modified a lot during the application run. So I am using xmlDoc->release() after reading the xml file and performing the required operation on it . … |
| | hi, i am trying to write a simulation for a very simple ALU and am having trouble with the AND/OR operations. I want to AND/OR integers bit wise with the two integers being passed to a function in hex form and the result returned in hex form so : int … |
| | Hey i have a weird problem when im trying to print out elements in my temp pointer array, at the bottom where im just using cout to print random indexs of temp, it will only work if i comment out temp[1]... anyone have any idea why? if its not commented …  |
| | hello i was wondering when the final ouput to my program gets sent to the word document, is it possible to change the font that gets sent to that particular word document with the program and not just manualy changing it on word? [code=cplusplus] #include <iostream> #include <string> #include <fstream> … |
 | Hello, I have a question, when does a global variable get destructed? ex. [code=c++]#include <iostream> using namespace std; class simple { public: int *i; simple(int ni){ i = new int(ni); } ~simple(){ delete i; } } simple simple1(10); //for simplicity no command line int main(){ cout<<*(simple.i) } [/code] when will …  |
 | Hi all, what is the bug in the following code: [code=cplusplus] #include <iostream> #include <string> int main() { string str = "Hello World!" cout << str << endl; cout << float x = 5.0f * str << endl; int 65Num = 65; cout << "65Num = " << 65Num << … |
| | i have my program doing what i want it to do untill it gets close to the end. the ouput that is transferred to the word document is not right. i have random charactes appearing before the "Date:". how can i fix this minor problem?? Thanks [code=cplusplus] #include <iostream> #include … |
| | I don't get it... Why is it that whenever I view posts of homework assignments and projects that a fair amount of the time (in Computer Science or C++), it seems as if-- Oh hang on. I already know what'll happen from here. If I don't write a topic that …  |
| | Is this the best datatype to use for doing calculations for extremely large numbers such as computing pi . Or am I going to need to create my own algorithm for handling extremely large numbers? how does software like superpi handle such a large number, im assuming its all split … |
| | Hi all, I am quite confused about the usage of both. Both of them seems to enable a variable to be shared consistently between classes. Is the following true? [B]Namespace[/B]-used for defining some constant values that you want to share in your application. [B]Static variable[/B]-used to maintain a consistent value …  |
| | Hi, so my problem is that when I write a program, and then try to debug it, there comes a error, on VC++ 6.0 there is "Cannot execute program" And in VC++ 2008 express edition it says, that there ain't the file I'm trying to debug. Here's the output; 1>------ … |
| | Hello I have just started learning programming & this problem is really stumping me. I have to do a syracuse sequence (explained below) & I know my code below is very wrong, (it needs to use for statements in there) but can you give me any advice on what to … |
| | Hello, I've written couple of overloaded operators in my file containing Set declarations. I want to use these operators within the declaration file. However it seems it isn't used. Instead it uses the standard operators. e.g. i have two overloaded operators say <= and == [code=cpp] bool Set::operator<=(const Set& b) … |
| | Hello and first sorry for my very bad english. i have little knowledge about c and c++ but im trying to learn win32 programming with c++. its little hard and im very new at that. im trying to do very very simple thing: i have an main window, 1 button, … |
| | Hi I am using eclipse.I got error.I am using g++ complier. *.o : file not recognized: File format not recognized collect2: ld returned 1 exit status Please any one help me..[B][/B]  |
| | Hey guys, I was wondering, with this code: main.cpp [code=cpp] #include <iostream> using namespace std; class car { public: car (float speed) : speed(speed) {} car () : speed(0) {} void cruise(float speed) { this->speed = speed; cout << "New speed: " << getSpeed() << endl; } void brake(float power) … |
| | hi guys,, i've this homework that i have to submit tomorrow.. and unluckily I didn't know how to do it.. it says : Write a program that outputs "Al Eid Song" words.. "The five days of Al Eid" Use a [B]switch statement [/B]to display the following output for the 5 … |
| | Im having a problem with the while loop in my code, if I change what X2 is being compared to to anything other than 0 it doesnt hit the while loop, I am hoping its just some weird mistake. Thanks in advance for any help. [CODE] X2 = 0.5; while … |
| | I am going to make OS. And I need help with GUI...how to make an GUI ?...I am not on Windows so CreateWindowEx() doesn't exist. |
| | Hello all, I'm trying to make a simple text box with SDL, I have loosely based it off of [URL="http://lazyfoo.net/SDL_tutorials/lesson23/index.php"]The Lazy Foo Tutorial on sting input[/URL], but this code doesn't seem to work... [CODE]if(event.type==SDL_MOUSEBUTTONDOWN){ if(isIn(event.button.x,event.button.y)){ hasFocus=true; } else { hasFocus=false; } } if(event.type==SDL_KEYDOWN){ if(hasFocus){ if(event.key.keysym.sym!=SDLK_BACKSPACE){ str+=(char)(event.key.keysym.unicode); } else { if(str.length()!=0){ … |
| | ok iam working on a password protection for my program but i have a problem..... if the user set wrong password the program do this Wrong password!! The program will be terminated in 5 seconds but i want sec, (which is my seconds) at every second - 1 5-4-3-2-1 without … |
| | Hello all, This is my first post but i have lurked around the forums for a while (sans account) my problem is thusly: I have written a program to take information from a data file, copying values to a vector, allow the user to add/delete and print form this vector … |
| | please i was wondering if anyone could help me with my code, i feel its kinda too long and a good program should be as brief as possible... please would be very grateful. appreciated, cheers.. [CODE=cplusplus]int _tmain(int argc, _TCHAR* argv[]) { string Username; string Password; int terminator = 0, terminate … |
| | Hi, all I am trying to write the function to get rid of my punctuations. My code: [CODE] //_word_list is the vector<string> type void TextUtil::isnotpuct() const { for(size_t i=0; i<_word_list.size(); i++) { size_t len = _word_list[i].length() + 1; for(size_t j=0; j< len;j++) { if(ispunct(_word_list[i][j])) { _word_list[i] = ""; } j++; … |
| | Write a program that reads in an array of type int. Provide facility to either read this array from keyboard or from a file, at the user’s option. The output for the file input option should be stored in a file while the output for the keyboard input option should … |
| | Is there any way to mix visual c++ with normal c++? like can i enable mixed code? i want to get rid of this error: 1>tab.h(32) : error C4368: cannot define 'p' as a member of managed 'Monitor4vc::tab': mixed types are not supported |
| | Hello Everyone, I am a new member in the forum. I had a question regarding a code. The code is not able to open the input file. Any help is appreciated. thanks Here is the code, [ICODE] #include <iostream> #include <fstream> #include <cstring> #include <cstdlib> #include <iomanip> using namespace std; … |
| | Hello, This is my first time using forum to ask around for some assistance. I will make it briefly. [code] void main() { char *StringPtr; //pointer of char char String[26]; //array of chars strcpy(String, "abcdefghijklmnopqrstuvxyz"); if((StringPtr = new char[26]) == NULL) cerr << "\n\a allocation failed" << endl; else cout … |
| | Hi, all I got stuck by the erase function usage. here is my code: [CODE=C++] //A is my class //this function is used for judge weather there is a punctuation in //the word and get rid of it. void A::isnotpuct(const string& wordlist) const { size_t len = wordlist.length() +1; for(size_t …  |
| | Dear friends I have a conversion from ascii to binary while when i use my input which is like this : 16078 16283 0.3708 16078 16837 0.4514 16078 17820 0.4038 16078 17906 0.3695 16283 16837 0.3905 16283 17820 0.4343 16283 17906 0.3262 16837 17820 0.5291 16837 17906 0.6245 17820 17906 … |
| | hi, can anybody tell that how do we get group SID. we have user SID but how can i know to which group that SID belongs |
| | hello im having problem trying to get this to do what i want it to do. after the program asks if the user has had any work up to date, i want it to ask for specification if the answer is yes, or go to a next question if no. … |
| | I'm creating a program in Visual C++ and the program I'm creating needs to read a data in an Excel document. It was saved in .xls format. Can someone help me on how to read data in an Excel file. No need for writing or editing the excel document, just … |
| | Hi, I have been exploring doing some GUI programming with the wxWidgets toolkit as i am used to that from programming wxPython in python. I am doing the tutorials from zetcode and i am very mystified. (i think i spelt that wrong). This is the url [url]http://zetcode.com/tutorials/wxwidgetstutorial/menustoolbars/[/url] Its the first … |
| | I need help with my program. I have four errors with the ostream. It should be print my list of books. I know its something simple... I just can't figure it out! [code] #include <iostream> #include <string> using namespace std; //---------------------------------------------------------------------------- class Book { private: string title, author, genre, pubyear, … |
| | Hi, I have written the following program but its not doing what's it supposed to do ! For some reason sometimes nothing or rubbish is being printed onto the screen. However, if I don't use function but instead do everything within main(), then its fine. What's the problem with the … |
| | Hi, all its me again! I got really stuck by the STL library and do not know how to correct that. Here is my class code: [CODE=C++] class A { public: A( const string& filename ) { ifstream file(filename.c_str()) ; string word; while( file >> word) { _word_list.push_back(word); } } … |
| | Okay so the deal is, our instructor wrote what the class is supposed to look like (will be included with the code) and also gave us the Input, Preconditions, Process, Output, and Postcondtions of each function that is supposed to be used. I'm having trouble with an insert, delete, and …  |
| | Sorry but I don't know whether this is the right place to ask this. I want to create a scroll bar that can scroll the content in the main window. The difficulty is that I don't know how to calculate the accurate length of the whole content (blending of English … |
 | I am using OpenGL and i am trying to get this simple program to work, here is my code; [code=c++]void DrawScene ( void ) { glClear ( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); glMatrixMode ( GL_MODELVIEW ); glLoadIdentity ( ); //Triangle glPushMatrix ( ); glTranslatef ( -1.0f, 1.0f, 0.0f ); glBegin ( … |
| | Hi What is require is to get the path of current working directory.I m working on windows-XP. Is any function avaliable in c/c++ i could find on net #include <unistd.h> char *getcwd(char *buf, size_t size); But not working i don't know why. Can u provide small code of how to … |
| | Hi, all its me again! Still stuck with the STL function usage. but this time face the sort function problems! here is my class: [CODE=C++] class A { public: A( const string& filename ) { ifstream file(filename.c_str()) ; string word; while( file >> word) { _word_list.push_back(word); } } StringIntVector topNWords(size_t … |
 | I have a program to find the [B]Sin[/B] value of a given value(in radian) . It is working properly , but i want a better program or can u please give me a small explanation about my code . please ... in my program n=2; // what is this meaning … |
| | What are and how do I use vectors ? I have read some tutorials on them but I don't understand fully how they work. |
| | Hi everyone. Having some issues with my program I need to make for an assignment. There is a part that needs to be able to look for upper-case letters within a html tag ( which is located in a text file) It then has to say where in the file …  |
| | Hello, I developed an application in VC++ an now I want to compile it using GNU++ to be run on a ubuntu server (where I am actually trying tocompile it). After some syntax/usage corrections I get an error which I totally don't understand (and I don't have it in VC++, … |
| | Stuck by another problem about the vector, map functions the topnwords function is to find the top n times words occurrence Here is my code: [CODE=c++] //stringvector is the type-- //typedef vector< pair < string, int > > StringIntVector; StringIntVector TextUtil::topNWords(size_t n) const { map<string, int> freq; for(size_t i=0; i<_word_list.size(); … |
| | The following is a statement from a program on linked lists given to us in class. I do not understand why I have to add & for address when what is passed is a pointer which means it is passed by reference.: void CharNode::headInsert(CharNode* &head, char *d) { head = …  |
| | Hello. I am trying to write a doubly linked list that uses data from a class. I have this class that I would like to use... [code] #include <iostream> #include <string> using namespace std; class Book { private: int PubYear; //Variables string Title, Author, Genre, Publisher; public: Book( ){}; //Default … |
| | hi, this is embarrassing, for whatever reason I am getting "Don't know how to make target driver.o" whenever i type make. There is only one file named "driver.cpp" in the directory that i have to compile. I am staring at tutorials and don't understand why this won't work. heres whats …  |
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