51,593 Topics
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| | Hello everyone, I have c++ function whose the only argument is an array. Also I have a matrix. How can I pass say third column of this matrix as a array into the function without creating a mediated array in the loop. Is there c++ analogue of M(:,3) existing in …  |
 | Hey there, i have created a dll that creates timesignatures, the source code is as follows... [CODE]#include "timestamp.h" BOOL APIENTRY DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved) { return TRUE; } DLL_EXPORT char* CreateTimestamp(void) { time_t now; struct tm *ts; static char buf[80]; now = time(0); ts = localtime(&now); strftime(buf, … |
| | I have this code which do some matrix operation. It can be run on Microsoft Visual c++ 6.0 but i got problem when run it using Dev C++ 4.9.9.2.. it says, [COLOR="Red"]main must return and int[/COLOR] Can somebody help me? [CODE]// FDduct.cpp , finite difference. method. for duct #include <stdlib.h> …  |
| | I've been playing around with c++ a bit, and made a "encrypt"-"decrypt" thing. Just basically taking the int value of the letters and adding x to them - becomming a new character/letter. This is the code where it asks the user for an input: [CODE] void decryptonise() { string text2; …  |
| | Hi Guys, Need a bit of advice, I developing a GUI of a system which was designed as a console application. With few options in visual studio like windows forms (VB.NET), MFC and wxwidgets am not sure as to what would be appropriate to use and plus I have very … |
| | Hi. I need to print a btree, and instead of coding a method for draw it, I want to use graphviz. Have anyone of you used before? How can embed graphviz into my project without make the user do anything manually? There are some examples in the web, but they …  |
| | Can anyone help me with external direct merge sorting? Here is my code [code=cpp] #include<iostream> #include<conio.h> #include<stdio.h> using namespace std; int GetKey(char infoLine[30]) //Getting sorting key { char temps[30]; strcpy(temps,infoLine); return atoi(strtok(temps," ")); //returns first number in a line } void DirectMerge(char fileName[20]) { FILE* FTS; //file wich will be … |
| | Hi im looking to create a structured string in c++ the structure would be simular to a guid or uuid but programatically without using the guid apis, could you help me acheive this Thanks, Nathaniel Blackburn  |
| | My program is having an error on the following lines w/ red font. It says invalid types 'int[int]' for array subscript... pls help I'm not sure how to solve this. [COLOR="Green"]*********This is actually how my program works********* Read in a line of text and output the number of words in …  |
| | Im trying to implement a btree. I don't have any error in compiling, but when I run my code I have some weird runtime error. It says something like: MALLOC c:3096: sYsmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size … |
| | I am trying to make the following program. SUM=1+1/2+1/3+1/4+1/5....1/n n should be input by the programmer. I thought that using [CODE]for[/CODE] would work, but it only gives me a series of 1+1 1+2 1+3,etc. What I wish to get is the series itself and the total addition of it. Any … |
| | I have an array that I want to be able to access in two separate methods and also in other files. To do this I have had to declare it as Static, can this be done another way? because I don't want to declare it as static This is an … |
| | I'm working on a Chat program using a server and clients. I have all of that working fine but now I'm trying to setup accounts for the server to use and I'm having problems with checking if the password entered on login matches the password for the account. When the … |
| | Not so long ago firstPerson started what was a series of competition questions for the users. It was fun so I was thinking of doing another. I've always kind of been interested in A.I so I thought that would be a good place to start.This is probably a more advanced …  |
| | I want to make a program, that will run every time I turn on the computer. Like Skype.. or Anti Virus programs. How would I do that? |
 | I wrote this: [CODE] #include <stdlib.h> // system pause //#inlcude <ctype.h> // for toupper() #include <iostream> // input output #include <iomanip> // setw() #include <string> //#include <algorithm> //#include <iomanip> // for setw() and right-aligned //#include <math.h> // for pow() using namespace std; int main() { /* char alpha [26]; char … |
 | Please consider a beginner/intermediate question for which searching Google has provided me no results. I am attempting to write a program that compiles a script program into an assembly language module that I will then link to the main C++ program using Visual Studio. How is it possible for a … |
 | I am making a program and I want to be able to determine the refresh rate of the monitor somehow (to limit an fps cap). I am using windows API. Is there anyway to access this? |
| | Hi all, I am currently working with some c++ code on an ARM processor. The issue i am having is that when my application hits a segfault i am unable to get any information as to what caused it. My dev machine is ubuntu 10.04 LTS and i am using … |
| | Hello All, I've got a problem and I hope you'll help me, because I'm desperate. I've been finding everywhere on the websites, but I haven't found it yet :( .... I found this website [url]http://www.codeproject.com/KB/miscctrl/ClickAndDragPictureBox.aspx[/url] , where it the same function what I want to do it. I want to …  |
| | Hello everyone, I am trying to call gnuplot in c++ code using pipe in linux. There is no errors during compilation, building and excecution. However, window with the plot does not appear. Below is the code. [CODE] FILE* Gplt = popen("gnuplot -persist","w"); fprintf(Gplt,"plot '/home/mk/nh1.dat' using 100 with lines"); pclose(Gplt); [/CODE] … |
| | I trying compile my program but it all time write error: stray '\32 ' in program , I have there some graphics instruction, I think its error with directx but Im not surre. If somebody want i can send him my source. |
| | Good Morning, I am trying to create 2 arrays out of a list. Here is the code that I use: [CODE]int* move_x= new int[10]; int* move_y=new int[10]; void D::printpath(){ int i=0; list<state>::iterator iter2; for(iter2=path.begin(); iter2 != path.end(); iter2++) { cout<<"["<<iter2->x<<" , "<<iter2->y<<"]"; move_x[i]=iter2->x; move_y[i]=iter2->y; i=i+1; } }[/CODE] It gives an … |
| | Hi, I have found it hard to search for the solution, so as my last resource I'd like to show my problem to you. It basically comes down to that I have an array, a dynamic one. Each index of that array holds a set of coordinates (how many, I … |
| | I'm a new at C++ and need some help with this code. I searched but maybe because I'm not familiar with the correct vocabulary for C++, I couldnt' find an answer for this. What I'm trying to do is pass a string into a function that is looking for an … |
| | Hi everyone. I have a few question to ask regarding email notification in c#. I have the following codes: [CODE] SmtpClient smtpClient = new SmtpClient(); MailMessage message = new MailMessage(); message.To.Add("alex@hotmail.com"); message.To.Add("alex2@gmail.com"); message.Subject = "Test"; message.IsBodyHtml = true; message.Body = "<html><b>Hello World!</b></html>"; smtpClient.Send(message); [/CODE] While in my web.config I do … |
| | I am trying to get to the "Wireless Network Connection" which we can normally get to by right clicking on that pc icon in the system tray & selecting the "View Available Wireless Networks" option. Is it possible to bring up that window through code using Windows SDK? I tried … |
| | Hi there, I am writing a program that is taking a number and finding its cube roots and then prints out whether the result is an odd or an even number. I have written the following code but for some reasons it is not giving me the right answer. Could … |
| | I have a union named un. I have a un* named up that is the address of a un named u1 (bear with me). The pointer works fine, but I can't pass it to a function. Any alternatives? Here is some code to illustrate (please tell me if there is … |
| | Hi everyone! I wrote code for the progress bar but the thing is that it is just an empty bar and nothing goes on. So how can make it update? [CODE] #include <windows.h> #include <commctrl.h> #include "Resource.h" //--------------------------------------------------------------------------- RECT rcClient; HWND hWnd; HWND hProgress; HWND hDlg; HINSTANCE hInst; int pb_pos; … |
| | How can I detect a palindrome as complicated as "A man, a plan, a canal, Panama!" without using erase() and just ignore the spaces and punctuations? The current version is: [CODE] #include <stdlib.h> // system pause //#inlcude <ctype.h> // for toupper() #include <iostream> // input output #include <string> //#include <algorithm> … |
| | Just wondering which of these functions would be faster (or if they would be the same): [CODE]class MyClass { private: bool MyVar; public: MyClass &Function1(bool MyVar); MyClass &Function2(bool MyVar); MyClass &Function3(bool var); }; MyClass &MyClass::Function1(bool MyVar) { this->MyVar=MyVar; cout<<MyVar; return *this; } MyClass &MyClass::Function2(bool MyVar) { this->MyVar=MyVar; cout<<this->MyVar; return *this; … |
| | Hey everyone, I'm having some trouble writing this program using queues. The main issue that I'm having right now is that I have three queues, each is size=5. The user inputs a number to remove from a queue. The program will pop all the values out of the 3 queues … |
| | Hello World ! I have problem regarding configuration of OPenAL in Dev c++. I have included openal32.dll in system32(Windows), alut.dll in system(windows folder), included alut.h,al.h in AL directory (c:\dev cpp\include\AL) as well and linked all the files viz. -lopenal -lalut. but the source code is not getting compiled..What's the problem. …  |
| | [CODE]int operator%( double a, double b ){ int aa = (int) a; int bb = (int) b; return aa%bb; }[/CODE] gives me an error message "must have an argument of class or enumerated type"! As you can see, I want a simple program which truncates doubles into their equivalent integers, … |
| | Hello,software comrades! I have a task to do, and I have figured some part of it,but I have troubles with it.So i am writing and asking for some advice. The task is as it follows: You are to create a program (C++ language) in which u enter a number (preferably … |
 | OK, I looked for a noob section to the forum, but didn't find one. So here's my issue. I'm doing an exercise from a text book for a class I took two years ago. Back then, this wouldn't have been an issue. Now, having not looked at C++ for all … |
| | So i am a very fluent C++ programmer, and am switching over to PHP/Javascript/MYSQL for some new work that I am doing. I know all the basics of C++ and some of the more advanced STL libraries. I know very basic PHP simply cuz I already know all the arrays, …  |
| | Hi! I am trying to make a simple "Guess my number" game. For some reason the compiler (Visual Studio 2010) gives me an error. Here is the full code : [CODE]#include<iostream> #include <cstdlib> #include <ctime> using namespace std; int main() { int tries = 0; int input; srand(static_cast<unsigned int>(time(0))); int … |
| | 2 Questions: 1. How is the windows cursor drawn? ddraw? I don't understand and I can't find any information on it. 2. When you control alt delete in windows 7 how is that screen drawn? Thanks |
| | [TEX]This is a game i have made, but I have some problems in the breed & eat functions I dont know what is the problem & i really need help. the code works probably but the prey & the predator doesnt breed or eat,,,ANY HELP PLZZ[/TEX] [CODE]#include <iostream> #include<windows.h> #include<conio.h> … |
| | Hi, I have to build a matrix class with functions that you would expect, Im wondering if anyone can tell me why one or both of these functions arent working correctly? Basically a test harness is run against them to check so the data is random. Im sure it is … |
| | HI. I'm reading in a wave file and writing it to a sound device using ALSA. Im not a C++ guy (C#) so not very handy with its file I/O methods.. Any idea how do i change : [code]int rc = read(0, buffer, size);[/code] To work with any file i.e. … |
| | Hi all, In my MDI when i try to execute i am getting an assertion error pointing to wincore.cpp line 311. [CODE]BOOL CWnd::Attach(HWND hWndNew) { ASSERT(m_hWnd == NULL); // only attach once, detach on destroy ASSERT(FromHandlePermanent(hWndNew) == NULL); // must not already be in permanent map [/CODE] here is the … |
| | [B]hi help me in resolving these questions [COLOR="Red"] 1. Write a program which finds the factorial of a number entered by the user. (check for all conditions) (Beginner). 2. Develop a program to convert currency X to currency Y and visa versa (beginner). 3. Write a program that print out …  |
| | I am new to the c++ programming language and I need help. So I have created the program in the extension .cpp ,but how can I run it, its just text! Is their anyway I could run it as a program from command line or an executable file? Plz help. … |
| | I have an integer array and I want to fill it. [CODE] int* a=new int[7]; [/CODE] but I want to check at first if the element a[i] is set before or not. Ex. a[3]=2; a[3] has value but all elements in a hasn't have any value until now, How can …  |
| | hi there, i have a project which is build in visaul studio 2008 with the database used the mdf file. how can i keep the mdf file in a local network so that everbody can access if from the application. how can i do this. i want the mdf file … |
| | Help me please. My PC is connected to a Olivetti printer through COMM1 port and I installed driver for the printer, but after do this, i can not program to open comm port in C#. The Error display: The given port name does not start with COM/com or does not … |
| | Hello, everybody. I'm having some terrible task for homework and I'm just out of my mind. Here it is: [I][COLOR="Red"]Define a class Deque that represents a deque of strings by keeping its elements in a dynamically allocated array (with maximum capacity) and make the deque as a "circular array" (the … |
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