51,593 Topics
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| | Hello, I am having a few problems with my image class using OpenCV. I am getting the errors: [CODE]src/image.cpp: In constructor ‘Image<T>::Image(const char*, bool)’: src/image.cpp:21: error: there are no arguments to ‘cvLoadImage’ that depend on a template parameter, so a declaration of ‘cvLoadImage’ must be available src/image.cpp:21: error: (if you … |
| | Hi, I want to write a program to calculate the no. of bytes between the first binary pattern (110) to the next 110 binary pattern. i know i probably have to make use of: cout<<sizeof(char); Do i need to use a pointer or something to tell the program where to …  |
| | #include <iostream> #include <iomanip> using namespace std; class Derivate { public: showDerivate(); void showFunc(); }; int main() { int nr; Derivate drv; drv.showFunc(); drv.showDerivate(); std::cin.get(); return 0; } void Derivate::showFunc() { cout<<"Nr"<<setw(20)<<"Function"<<endl; cout<<"1"<<setw(20)<<"x"<<endl; cout<<"2"<<setw(20)<<"cx"<<endl; cout<<"3"<<setw(20)<<"xpowc"<<endl; cout<<"4"<<setw(20)<<"1/x"<<endl; cout<<"5"<<setw(21)<<"1/xpowc"<<endl; cout<<"6"<<setw(20)<<"sqrt x"<<endl; cout<<"7"<<setw(21)<<"epowx"<<endl; cout<<"8"<<setw(20)<<"lnx"<<endl; cout<<"9"<<setw(20)<<"sinx"<<endl; cout<<"10"<<setw(20)<<"cosx"<<endl; } int Derivate::showDerivate() {cout<<"give the respective number …  |
 | i want an .exe file to be automatically executed if a folder having that particular file is opened,that's if you open the folder the file should get executed automatically.I want this to do in c++.can somebody help??? |
| | Hi I need guidance for this program and it seems i don't understand basic fundamentals of creating histogram with c++. I'm not asking for spoonfeeding or anything i just need to know what i'm doing wrong and is there anything i can include or to improve it. This programe needs … |
| | Hi I am writing a 2D game that only uses the arrow keys for input. I have done a search on this site fro ways to get input from the arrow keys and have come up with many solutions. However all of them use the getch() function. Normally this would … |
| | Hi all, I add picture to my pictureBox by writing the following code : [ICODE]pictureBox->BackgroundImage = System::Drawing::Image::FromFile()[/ICODE] But how would i remove that image ones i am done using it? Thank you in advanced. |
 | I'm using VC++ 2008 with Window XP Professional. I'm trying to make a custom assert function, which presents a dialog box asking what the user wants to do about the assert. When I call DialogBox, it shows my dialog properly, but every subsequent call to that function appears to do … |
| | I have heard there is a C++ split function, but I have not yet found anything to help me work with what I have. I have the following: [CODE]001E3897 1024 HV regread set [rootPos: 0001CBE7, offset 1862832 ][/CODE] I need to be able to take this and split it into … |
| | Any idea how to check if a text file is still being opened by another program?? I wanted to write to the file after the other program had finished its task and closed the text file. As i know two programs cant open the same file at the same time. |
| | Okay, so I have pretty much changed my entire program around to be strictly C++, and this last question I have is a very simple one. [CODE]Generic::IEnumerable<Item^> ^Items;[/CODE] What is a good equivalent for this? Just a simple vector? Ty :D |
| | SO i have a function that returns a call to another function which returns a class, and I am getting a compiler error... AoE2Wide.cpp(179): error C3073: 'AoE2Wide::Patch' : ref class does not have a user-defined copy constructor [CODE]return FindPatchForExe(fileSize, exeMd5, exeFilename);[/CODE] Here is the definition i made for the class … |
 | I'm not positive this is the right place to post this. We're starting analysis for converting to UTF-8 on our application. During testing, all of our test data is displayed incorrectly in visual studio - our two-bye UTF-8 characters are being displayed as two one-byte ASCII characters. Is there a …  |
| | Hi, i am new to this forum and i am just learning c++. Can somebody help me with sorting numbers. I have: I have 3 ints(int1,int2,int3), each spanning from 5 to 17, now i want to compare int1 and int2 and type out all numbers from lowest to highest(5,6,7,8...), than … |
| | can somebody explain me about parameters in initgraph in c++ graphics??? |
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| | Is there a way to pre-specify a specific string buffer size for the underlying buffer to which repeated concatenations are going to be made in a loop with the purpose of eliminating time wasting re-allocations and block movements of characters from one buffer to another? I have tried the string::reserve() … |
| | hi, i m trying to make something like a login page with C# using VS 2010 and SQL server database. I am using the following code to get the password from the appropriate username but i get an error of Object reference not set to an instance of an object. … |
| | Hi, I've been thinking about this for a while. What is the best way to design a program? What I don't understand is how people think of which classes etc. they will use and what they are called. For example, in a program which simulates the card game BlackJack. How/why … |
| | Hi guys, Long time no see. Anyways, need help like always. Actually since the past two years i have been simply neglecting C++ due to my pressing commitments with ASP.Net and suddenly i feel like doing programming in C++ all over again. What i need is a startup project (Intermediate … |
| | how to multiplication large number using mpi? |
 | Hello, When I was getting the basics of C++ these forums were very helpful so maybe I can find some help on this subject. I want to organize a template project (think there is a better name for this) so when I create a new project in Visual Studio 2010 … |
| | I'm trying to compile the linux source code release of Axis2/C on MacOS but I'm getting errors at building axutil.h. I've tried to apply different patches without success, and I even found a website that explained the necessary modifications in the code and I made them but they still didn't … |
| | Hello, I want to add a vertical progress bar in to my c++ windows forms project and tried different ways to implement it. But couldn't find any method to do that. Please help me. Thank you !  |
| | 1. how is c++ structure different from array? 2.how to define syntax,create,use and store data in struct variable?.. 3. how to create an array of structure?.. i need some refenrences or brief answers..tnx...  |
| | Hi, For the purpose of creating a very simple mp3 player i would like to have a listview that allows a user to click on a listed file and play an audio file. I figure that to solve this the program should display the contents of a directory containing the …  |
| | Hi all, I have a file with data 300 lines. (in.txt) I want to make a program that seperates the file in two others (out1.txt, out2.txt). But I would like to do it with percentage. For example, Percentage (%): 50 and seperate the in.txt file in the middle but with … |
| | Hi All, I have been assigned a task to read other application data installed in our client's computer running windows 2000 and then send it to serial port. The application has a tab control in the main dialog that contains two sub dialogs, one contains a combo box, selecting each … |
| | If you want your program to startup automatically when the user logs in, just paste this code into it. To add as a HKLM (For all users) startup item instead of HKCU (Current User), change HKEY_CURRENT_USER to HKEY_LOCAL_MACHINE. I'm posting this because I had a hard time figuring this out …  |
| | I'm looking for help with an assignment in C++ in which change must made for an entered item cost, and the number of each monetary denomination from $20 bills down to one cent coins is to be shown (ie: Twenties - 2, tens - 0, fives - 1, ones - … |
| | [CODE] #include <cstdio> #include <cstdlib> #include <iostream> using namespace std; int odd(int nValue) { nValue= nValue -1; return nValue; } int main() { int nValue; cout << "Enter a Positive Number: "; cin >> nValue; while ((nValue>2) && (nValue % 2 == 0)) { nValue = nValue -2; cout << … |
| | how can i return cases 1,2,3 and default in to the main function? when i press 1 as key to return to the main function.. the prompt will appear "press any key to continue" how can i return it to the main menu? [CODE]#include <iostream> #include <cstdlib> using namespace std; …  |
 | Hi. I was wondering about how you might go about executing a file as you log in to your account. For instance, I want to run a file that prompts the user of the date, and any other information as you log-in. Might I need a registry entry or such? … |
| | Hi, I would like to using POSIX API system calls in C, and via command line arguments know how to go about extracting from an archive file.(in Linux). I have done the archiving process it archives the files I enter into the command line , and the last but one … |
| | How do I comunicate with an API? I'd like to create a thing that would comunicate with other people through another server (say Gmail) Thanx, JT |
| | hi avery one i need this help ? i want to do a program to read ome nubers from the file and print only the negative odd nubers in another file ??? |
| | My original question stated: 1. Write a function named "digits" that takes an integer argument in the range from 1 to 9 , inclusive, and prints the English name for that integer on the computer screen.[B][U] No newline character should be sent to the screen following the digit name.[/U][/B] The … |
| | for removing the last element from a chain in my linked list? [code] Action *temp = head; //Action is my node while(temp != 0) { if(temp->link == tail) //tail is my last node { delete last; tail = temp; tail->link = 0; return; } temp = temp->link; } [/code] I … |
| | [CODE]#include <iostream> #include<cstdlib> #include<iomanip> using namespace std; int* userInput(int mat); void multiply(int mat, int* array); void print(int **mult, int **divides, int mat, int row, int col); //Main method, calls IO and handles the case for only 1 matrix. int main() { int mat = 0,i,j; int arrayA[mat][mat]; cout << "Enter … |
 | I want to extract .cab files using C++ when extraction finishes i want the extract .exe to run how can i do this? |
| | I'm trying to set up NetBeans IDE on my Vista Home, and have a choice between those two compilers. Which one would you choose? I also want to have Code::Blocks. |
| | RE: Using C++ MD5 hash for software verification & licence files Hi The last few days I've been searching the net for ideas about building in some sort of software protection/security schema within a development for educational but perhaps more importantly to understand good & bad security coding/practises do's & … |
| | Hello,i m trying to make a program that uses 2 .dat files for student managment..here's my code and the problem main: [code=c] #include <stdlib.h> #include <stdio.h> #include "tei.h" /*orismos domwn*/ struct address{ char odos[16]; int noumero; }; struct foititis{ char am[7]; char onoma[11]; char epitheto[16]; struct address dieuthinsi; float mo; … |
| | HI all, Im trying to create a simple MP3 player. I hope that by amalgamating a series of strings, example 1, that they can collectively contain the full play and filename/path instruction instead of the self-contained method in example 2. When I try to compile the solution in example 1 … |
| | I'm doing a second year student in computer and information sciences and it is the first time for me to do a project so I need help . My problem is how to enter a branch information and update the branch information,update holder information .Ijust need a hint to start. … |
| | Ok, I have no idea how to make this becuase I need to be able to update the Name & Password database for the Web or somewhere else. Regards |
| | Hy everyone ...i need some guidance to make a program.I need to implement NSGA2 algorithm for vector optimization.The optimization function must be selected through a list.And i need to display de Pareto front. |
| | can any one please tell me am i done my question right? my question is to store store 1035 to 1265 random in a character array and display the array. and im not sure whats this srand is doing? [code] #include<iostream> #include<stdlib> #include<conio.h> int main(){ srand(1035); char b[30]; for(int i=0;i<30;i++) … |
| | Hi, I've recently downloaded MSVC++ 10.0 Express from the Microsoft website, and I can't seem to find a new project template for 'setup and deployment'. Can I download it individually from somewhere? Thanks, Dean |
| | i have two questions 1st is can any one please tell me what is the role of setprecision in C++, why it is used? 2nd is : this statement [code]totalS+=sales[i][j];[/code] is equivalent to what, i.e what is the role of this += thanks alot |
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