51,593 Topics
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| | Can someone either give me a couple links, or some code with explanations on how to create gui (graphical user interface) buttons that are like boxes with text and color in them, that are equal to a command when you click them. Also, how do you create a gui slider … |
 | [code=C++"] int x[5]; x[4] = 10; *(x + 4) = 10; [/code] Array indexing has a cleaner syntax but (as I've read) pointer arithmetic is faster. My question is, is it worth to use pointer arithmetic? Is there a noticeable difference?  |
| | When I include i++; inside this loop I get a runtime error and I have no idea why I get it: Do you have any idea? [CODE] while (i <= 3){ if (tauler[PacMan.y][PacMan.x]==0) xoc = 0; else if (tauler[PacMan.y][PacMan.x]==1) xoc = 1; else if (tauler[PacMan.y][PacMan.x]==2) xoc = 2; else xoc … |
| | Hey guys Need help with the following program. I keep getting compilation error `error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'void' (or there is no acceptable conversion)` Apparently I am not able to pass by reference however it works well when I … |
| | I have written multiple streams of data to a file the format is like this [CODE] J|1|2|3|4 [/CODE] that would be 1 record and there are more then one record in the file my question is how do i read that data in, deserialize it, extract it and assign each … |
 | I have a base class called ModelFile I have derived classes called ObjFile and VtkFile that I would like both to use << from ModelFile. However, since << is an external function, [code] ostream & operator << (ostream &output, const ModelFile &Model) { output << "Num Vertices: " << Model.NumVertices() … |
| | can anyone help to solve this question using dev c++,i'am very poor knowledge in c++ sometime i'am very down to do question... please help me to write a program to display an array of characters in reverse order e.g input:hello reverse order:olleh note:you must make sure that the new string … |
| | [B]Hi all How do you do the following operations in C++? 1. Opening Files in C++ 2. Closing Files in C++ 3. Reading Files in C++ 4. Writing Files in C++?[/B] |
 | Topic... just wondering if it would be friend or pointers in the main or something else... |
| | How can I allocate a 2D array? (on the heap) It needs to be dynamically allocated because the values of rows and columns aren't known. |
| | What would be a good tutorial for Hangman. I have an assignment where I need to create the game using five classes. I found a couple online but they are incomplete. I'm a beginner to c++ and I would appriciate any help or guidance from you guys. Thanks in advance … |
| | hiiiiiiiiiiiiiiiiiiiiiiii i'v a problem with dowing a circle in opengl I want to drow a fram of circles but my circle function did not implemented this the code that I try #include <windows.h> #include <gl\gl.h> #include <gl\glu.h> #include <gl\glut.h> #include <math.h> static void redraw(void); int main(int argc, char **argv) { …  |
| | I have to write a C++ code that computes the greatest common divisor of two numbers. When Declaring x, y, temp, remainder as a Integer is this right? Or can someone help me in the right direction. [ICODE]int x = 0; int y = 0; if (x < y) then … |
| | ok lets say I have my code file in my web server and any one can call that functions in that file ( assuming they know the name of the functions ) but they can't see the actual implementation in other word they can use the implementation but they can't … |
| | I did make my dll file out off those two files dll.h [code] #ifndef _DLL_H_ #define _DLL_H_ #if BUILDING_DLL # define DLLIMPORT __declspec (dllexport) #else /* Not BUILDING_DLL */ # define DLLIMPORT __declspec (dllimport) #endif /* Not BUILDING_DLL */ DLLIMPORT void welcome(); class DLLIMPORT DllClass { public: DllClass(); virtual ~DllClass(void); … |
| | I would like to declare the type of an object based on user input. Ie. I would like to do the following: [code] string obj = //get from command line arguments if(Format == "obj") { ObjFile Obj; Obj.Read(InputFile); Obj.DoSomething(); Obj.Write(OutputFile); } else if (Format == "vtk") { VtkFile Vtk; Vtk.Read(InputFile); … |
| | i have added a function to make selection sort to my code but i can't adjust it. i need that someone try the code and try to adjust it so can someone help me to adjust it plzzzzzzz....and try to help me in sorting in an ascending order by using … |
| | Dear friends I want to create some projects real time projects so that i am well equipped in making cutting real edge projects .....could you please submit some websites which explain some real code like making some text editors in C++ or C(text editors is just an example)I know the …  |
| | Hi, can anyone help me fix my code. This program is linked to a project list (with classes). This is the main program. It has to open up a file of strings and output then in order of how many there are. But its not working though. Can someone help …  |
| | hi, can someone help me translating this functions from c++ to delphi, because i not a c++ coder: here you go: [ICODE] bool IsAnubis() { PROCESSENTRY32 pe32; pe32.dwSize = sizeof(PROCESSENTRY32); DWORD PID = 0, PPID = 0, expPID = 0; HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if(Process32First(hSnapshot, &pe32)) { while(Process32Next(hSnapshot, &pe32)) … |
| | Hey. I have some queries. Wonder if anyone out there can help me out. I have a PDA phone, SAMSUNG Omnia I-900. I have a internal GPS buillt-in. I also installed a software call NavFone PPC. It is a navigator. I'm just curious, anyone out there knows if i can … |
 | Hi guys, im trying to call a function with in another and for some reason i am getting In function `int bDisplay()': `move' undeclared (first use this function) (Each undeclared identifier is reported only once for each function it appears in.) In function `int move()': `int move()' used prior to … |
| | #include <iostream> ; #include <fstream>; #include <string> ; #include <iomanip> ; using namespace std ; int main ( ) { string name; int m1 ,m2, m3; float avg; ofstream outfile("mark.txt") ; cout<<"Write your name :"; cin>>name; cout<<"input 3 marks:"; cin>>m1>>m2>m3; avg=m1+m2+m3/3.0; cout <<showpoint << fixed << setprecision (2); cout<<"ur average … |
 | I have this idea that I want to write an operating system. I've started to learn C++, but I have a few questions...One is, obviously, am I using the right programming language? I have looked at a few forums on this site, and it seems to be half of the … |
| | Hi Guys, Have a question regarding the exception filter. I have a MiniDump class which looks like this: class MiniDumpHelper { public: MiniDumpHelper() { ... } LONG WINAPI exitWithDump(struct _EXCEPTION_POINTERS* exceptionInfo) { ... return EXCEPTION_CONTINUE_SEARCH; } } then i have a host.cpp class where i have a `main()` I try … |
| | Hi, I'm making a matrix class and I'm currently trying to overload some operators. [B] +=[/B] [code=C++]#ifndef MATRIX_H #define MATRIX_H #include <iostream> #include <ostream> #include <string> #include <sstream> class Matrix { Matrix& operator = (const Matrix &m); Matrix& operator += (const Matrix &m); public: Matrix(int x, int y); Matrix(Matrix &m); … |
| | Hi, I was working on my assignment and on compiling everything works perfect except at one place the compiler seems to skip the cin command. Here is my code: the skipped command is highlited in red. This particular part is suppose to delete the every occurence of an integer entered … |
| | Hi, I have been trying to wrap my head around this problem for a while now and I just can't figure it out. I've included the code that is involved with the runtime error. Basically, I have a pointer that points to another pointer. Action points to an array of … |
| | Can somebody explain whats wrong in the following code ? I am trying to pass a matrix and the called function is a double pointer. [code] #include <iostream> void func(int **); int main(int argc,char *argv[]) { int A[2][2]={1,2,3,4}; func(A); } void func(int **A) { } [/code] Best, Pradeep |
| | [CODE]#include <iostream> #include <cstdlib> #include <fstream> #include <string> using namespace std; const int MAX_MONTH = 13; const int MAX_STRING_MONTH = 20; const int MAX_ARRAY_TEMP = 13; const int MAX_STRING_TEMP = 4; void instructions (); // Explains program to user bool man_or_file(bool& manual, char& m_or_f); // Determines if user wants to … |
| | I just started learning SDL so I can make games in C++, but for some reason my code fails to compile. The code: [CODE=c++] #include "SDL/SDL.h" #include <string> using std::string; int SCREEN_WIDTH = 640; const int SCREEN_HEIGHT = 480; const int SCREEN_BPP = 32; SDL_Surface *message = NULL; SDL_Surface *background … |
| | This is more of a general question to see if I got the concept. I defined a class with private member data: one is an int variable and the other is a pointer. 1. Where is the int variable stored?... on the heap or on the stack? 2. Where is … |
| | Hey guys, I'm working on my homework assignment and I did all the code, but I can't figure out how to display the "hours of labor required" and The number of gallons of paint required. Here is the assignment: A painting company has determined that for every 115 square feet … |
| | Btw below is the key parts of my code - not all as there are loads of lines: [CODE] //main.cpp #include <iostream> #include "Customer.h" using namespace std; void displayMainMenu(); int enterMainChoice(); void displayAccountMenu(); int enterAccountChoice(); int enterCustomerID(); Customer createCustomer(); void main(void) { unsigned short numberOfCustomers = 0; Customer *Customers[10]; *Customers[numberOfCustomers] … |
| | how can i draw a circle divided to many sectors ,each secteor area deppends on specific angle for each sector in the circle , thanx for help , regards |
| | I am writing to a text file. Everything is working fine, except I can not figure out how to start a newline. I have tried fprintf(txtFile, "%s", "\n"); fprintf(txtFile, "%s", '\n'); fprintf(txtFile, "%s\n", " "); where txtFile is my FILE handle. How do I create a newline? Thanks. |
| | Hi guys! I wrote a class "Complex" which is representing complex numbers. Nevermind, I was trying to make it a library so i could use it easily in other projects but when i compiled i always got this an error. This is the log from the compilation. [QUOTE]Compiler: Default compiler … |
| | I program using Win32 API's. I compile with Borland or Microsoft "CL". I am on an XP machine. I use .cpp extensions to compile so C++ rules apply. I'm trying to get the bytes from my screen and send them to a disk file. I get a handle I call … |
| | Well, I'm an IT professional in my first real IT job. Unfortunatly I've come across this problem that I don't know how to solve. We have a computer where we have all of our shared files located on a seperate drive called the F drive. Which there is 215GB of … |
| | I have some codes like these: [code] process（void*p1,long lNum1,long Type1,void p2,long lNum2,long lType2,Param * toher...） { switch(lType1) case TIA_8U: switch(lType2) case TIA_16U: CMatrix<BYTE>* pIn = (CMatrix<BYTE>*) p1; CMatrix<USHORT>* pOut = (CMatrix<USHORT>*)p2; Run<CMatrix<BYTE>, CMatrix<USHORT>,BYTE,USHORT>(pIn,lNum1,pOut,lNum2,otherparams....) break; ... } [/code] Now I have a problem: the number of data types is at least … |
| | I have 1 line in this code that I can't get to compile. I'm new to C++ and begging for some help...any advise would be appreciated. [code] #include <iostream> #include <iomanip> using namespace std; double population(double pop, double birthRate, double deathRate); void printPopulations( double startPop, double birthRate, double deathRate, int … |
| | Hey, I am wondering how I can grab all the selected strings from a ListBox with multiple selection on... I tried looking for it on google and everything, and I know about SelCount but I haven't been able to find out how to grab the strings or the indexes of … |
| | If I initialize graphics in my program and then use cout the font appears bigger than normal and the cursor doesn't blink on the screen as it does when the graphics are not initialized.Is there any way I can use graphics as well as cout in my program?If yes how … |
| | im working on an encryption program and i need some help. so far it words fine except when i enter a space. when this happens it seems to end the loop and spit out the first word. any help would be great [code] #include <iostream> #include <string> using namespace std; … |
| | :?: :idea: Anyone can help me or give me code C/C++ of detect sound from speaker ex If have sound from speaker report " currently have sound" If not "currently not sound:zzz: " |
| | I'm a newbie at posting code so I'm sorry if I make any mistakes. The 26 line won't let me compile and I don't understand why. can anyone help me??? [code=cplusplus] #include <iostream> #include <iomanip> using namespace std; double population(double pop, double birthRate, double deathRate); void printPopulations( double startPop, double … |
| | Write a C++ program that reads in the historical average monthly rainfall for NY for each month of the year and then reads in the actual monthly rainfall for each month in 2007. Finally, the program should print out a nicely formatted table showing the average rainfall for each month, … |
| | I can't get it to compile. Here are the instructions for the assignment: Write a program that determines which of a company’s four divisions (Northeast, Southeast, Northwest, and Southwest) had the greatest sales for a quarter. It should include the following two functions, which are called by main. • double … |
| | Hi all - I need some advice on how to handle multithreading in a GUI. I wrote an application in C# using only the GUI thread (see screenshot) and at times there are "long operations" where the database is being accessed and the right hand pane is being filled with … |
| | [B][COLOR="Red"]Can someone please help me to understand how to read and write unicode from/to a file? also how to set and print a variable to/with unicode (like a wchar_t variable or whatever.)? Im at an intermeddiate lvl in C++, and when I search this on google I don't understand a …  |
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