daviddoria

Hello everybody I'm a student and having problems with an assignment - I have at the moment no idea how to achieve an appropriate solution. I'm aware that you shouldn't help me by showing some code. That's okay for me since I want to solve it by myself but I …

I am trying to use wxPython (the version that ships with Fedora 11 - I'm not building it from source). I am seeing: [code] from wxPython.wx import * File "/usr/lib/python2.6/site-packages/wx-2.8-gtk2-unicode/wxPython/__init__.py", line 15, in <module> import _wx File "/usr/lib/python2.6/site-packages/wx-2.8-gtk2-unicode/wxPython/_wx.py", line 3, in <module> from _core import * File "/usr/lib/python2.6/site-packages/wx-2.8-gtk2-unicode/wxPython/_core.py", line 15, …

i have a program that has one little glitch but i dont know how to fix it. If you can help it would be great. [b][code][/b] int main() { int a, b, c; b=0; c=0; do { cout << "Please enter a positive integer (negative integer to stop):"<< ' '; …

Is there a library that has a function that will take (theta,phi) and return (x,y,z)? Thanks, Dave

[CODE] //I need to make a class that calculate the mean and standard deviation. I have to test my program with an external file containing about 300 data. My program doesnt return the correct valuesAny help? #include <cstdlib> #include <iostream> #include <cmath> #include <fstream> using namespace std; class Statistics{ double …

I have to use a class that converts number (2-9) to words ie; 368253 is double. I have a file of 100,000 words that I have to "bounce" the string of numbers off of to form any possible string of words. It also has to be able to convert a …

[B]PLEASE NEED HELP WITH THIS HOMEWORK.... THANKS[/B] THE FOLLOWING CODE PERFORMS A [B]SNAKE GAM[/B]E USING GRAPHICS.H LIBRARY IN [B]TURBO C++ COMPILER[/B]... PLEASE ADD TWO MORE FEATURES... USING AN "+" CHARACTER TO INCREASE VELOCITY OR REDUCE DELAY AND ALSO AN OPTION TO RECORD HIGHER SCORES. PICTURE: [ATTACH]15179[/ATTACH] THE FOLLOWING CODES NEED …

hi!im new in c++ i need help how to make a software that convert any number that the user will enter and convert it in any base that the user will enter. It will convert it and show the result.

Hi, I'm looking for a library which provides edge detecion on color image. For example i have an 200x200 color image and i need to a table form it: bool is_edge [200][200]; Where is_edge[x][y] == true when there is edge in pixel [x,y] Sorry form my english, waiting for some …

Hi! I'm working on a hobby OS. Almost every time I try to link my files I get a 'undefined reference to' error. As I've been trying to compile with different compilers, the errors generated by the linker changes. I have only been using different ports of the GNU compilers. …

Does anyone use boost program_options? What I'm trying to do is this: [code] --Files 1.jpg 2.jpg 3.jpg [/code] The only thing I know how to do is [code] --File1 1.jpg --File2 2.jpg --File3 3.jpg [/code] Does anyone know how to do this, and maybe store them in a vector<string>? Thanks, …

Hi I've written this small program to demonstrate the Diffie–Hellman key exchange algorithm. The desired output from the program is for most runs correct. However occasionally there are some discrepancies in output of the shared secret keys values in that they don't match, when they should. I've found that certain …

Should I use cmath to use PI and trig functions? I dont think math.h has it - and cmath and math seem like redefine alot of the same things. What is standard practice? Thanks, Dave

I would like to take a screenshot of a region of my screen programmatically (so I can do it every time through a loop, for example.) Does anyone know how to do this? I guess it would involve the win32api - I've not used this before so any hints would …

Hey guys, I am incredibly new to c++ and need a little help on a matrix multiplyer program... [code] #include <iomanip> #include <iostream> using namespace std; int main() { int **mat1; int **mat2; int **result; int row,col; cout<<"Please enter row/col"<<endl; cin>>row>>col; mat1 = new int *[row]; mat2 = new int …

hi. i work on image processing.how can i convert my mfile to c++ code? i try with : mbuild -setup mcc -B cpplib:mfile a.m and matlab compiler give me cpp code but i can not run it. how can add lib & header file that it can run? is there …

in this program i'm writing the functions that have qt classes as parameters Qlabel, QSpinbox, etc. are causing compile errors, my other functions work fine i get the same 2 errors for each QT object i use as an argument this is the function definition that uses QT classes as …

Hi! Im doing an introduction to programming course in college and I have only been studying computer programming for the past six weeks. Our lecturer has given us an assignment to do by thursday which is to write a program that converts all of the uppercase letters to lowercase letters …

For a while now I've been doing this when I want to check the input of a function (in this example, to make sure they are not equal). [code] void foo(int a, int b) { assert(a != b); } [/code] But when the assert fails, I always find my self …

I am trying to make a simple demo of a DataGridView bound to a database table. I want to add a row, delete a row, and save the table. I used the IDE to do just about everything. It created the BindingSource when I set the datasource of the DataGridView …

I need helping trying to retrieve data held in a [CODE]std::list<boost::shared_ptr<boost::any>>[/CODE] I am working on a Singleton Controller class with a private [B]std::list[/B]. Client class(es) will be able to [B]Add/Remove/Edit[/B] concrete class objects to be used by the program through this Controller class. The reason for using [B]boost::shared_ptr[/B] is because …

Hello. I compiled a basic GUI example written with Qt. When I run with valgrind, it tells that there is memory leak. It is stranger, because at each time I run the app, the number of malloc calls are different. Qt seems nondeterministic. [CODE] #include <QApplication> #include <QPushButton> int main(int …

I have a palindrome set up in the system, and running fine. However, when I type "never odd or even" or "A Man, A Plan, A Canal, Panama", it didn't run properly as if these words in quotation marks are considered palindromes. Where is the loophole on my code re: …

Would it be possible to integrate something like codepad.org or ideone.com into Daniweb? It would be really nice to see the compiler output of code snippets automatically. Consider the difference between "Help something is wrong!" [code] #include <iostream> int main() { cout << hi; return 0; } [/code] and "Help …

I have this code for AlphaBeta implementation and have created versions of the required interfaces that work perfectly (I have debugged them quite thoroughly). Unfortunately my algorithm keeps returning an empty vector and score of 0. Here is the code: [CODE]#include <vector> #include <limits.h> using namespace std; typedef vector<unsigned char> …

what is FPE? how do i correct this in my program....tried everything...:sad: [code]#include<iostream> using namespace std; int factorial(int a) {int f=1; for(int i=1;i<a+1;i++) { f*=i; } return f; } int main() { int factorial(int); int n;cin>>n;int x=n/2,y=n%2,d,e,f,sum=0; for(int i=0;i<n;i++) { d=factorial(x+y);f=factorial(y); if(x==0) { e=1; } else { e=factorial(x); } if(y==0) …

Here i have a working code, what i want to know is: When the user inputs elements to the array, i want it to be automatically aligned in form of an matrix. Instead of [ICODE] 1 2 3 4 5 6 etc....[/ICODE] But just as a matrix, like this [ICODE] …

Ive been trying to code a GUI application in qt but im having trouble trying to get a button work. homewindow.h: [CODE]#ifndef HOMEWINDOW_H #define HOMEWINDOW_H #include <QWidget> class homeWindow : public QWidget { Q_OBJECT public: homeWindow(); ~homeWindow(); void init(); private slots: int when(); private: QWidget *aWidget; }; #endif // HOMEWINDOW_H[/CODE] …

Hi, Is it possible to take the input from a textbox that's in chinese (unicode) and convert it into hex to output to a text file? Any insight would be great, thanks!

Every once in a while there is a thread with 0 replies that has been marked as "Solved": [url]http://www.daniweb.com/software-development/cpp/threads/398278[/url] When you sort by "Unanswered", I don't think these threads should be displayed (they currently are: [url]http://www.daniweb.com/software-development/cpp/unanswered/list/8[/url]). Going through "unanswered" threads is surely in an attempt to answer some, and you …