51,593 Topics
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| | Hi I am trying to store an array into a file. I have tried a few ways but I end up with an extra line at the end of the file. The only way I can do this without the line is by writing [code] ofstream myfile("Stock.txt"); if (myfile.is_open()) { … |
| | [ICODE]/*write a program class Rectangle . the class will have two data member to coodinates of upper left & lower reght corner of rectangle. these two data member will be object of point class. 1-The rectangle class should following function. 2-A default destructor to print a messagewheneveran objectis distroyed 3-a …  |
| | Hi, This is just a thought. So please don't get mad at me and please don't waste much time over this either. Just wanted to share something that occurred to me. Now I've done a bit of java and a bit of C. Now what I want to do is … |
| | I am struggling with this assignment to long i need someone to tell me what am i doing wrong Write a program with three functions: upper, lower, and reverse. The upper function should accept a pointer to a c-string as an argument. It should step through each character in the …  |
| | I need to write a program that calculates the squares of all numbers that are contained in a file of floating point numbers. The obtained new numbers form a new file. Like this : if the file contains the numbers 1, 2.5, 0.1, the numbers 1, 6.25 and 0.01 form … |
| | I made the Huffman code algorithm... and made the tree as it should be made.. The problem comes how do I print the code from the tree.. Theoretically I know the code generation.. But how to implement in C++.. Using TC. The following tree is constructed for this data [CODE]Alphabet … |
| | i've seen in some sources that some classes have Getters and Setters even for public data members [CODE] class Example { private: int m_ID; public: string m_Name; int m_Age; Example( ); ~Example( ); void SetName( string nName ) { m_Name = nName; } void SetId( int nID ) { m_ID … |
| | [CODE]/* Beginning Game Programming, Third Edition Chapter 4 Load Bitmap program */ #include <windows.h> #include <d3d9.h> #include <d3dx9.h> #include <time.h> #include <iostream> using namespace std; //program values const string APPTITLE = "Load Bitmap Program"; const int SCREENW = 1024; const int SCREENH = 768; //key macro #define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & … |
| | write a program class Rectangle . the class will have two data member to coodinates of upper left & lower reght corner of rectangle. these two data member will be object of point class. 1-The rectangle class should following function. 2-A default destructor to print a messagewheneveran objectis distroyed 3-a … |
 | What would be a common strategy for using DLLs coded in native C++ in C#? I'm not really finding much good information about it, other than writing the DLL in C.  |
| | I'm brand new to C++ ,I've written following code for finding a number's factorial,Can you please let me know how to write it more elegantly ? [CODE]#include <iostream> using namespace std ; main () { int num = 0 ; // declaring variables double result = 1 ; long int … |
| | I'm getting a LN2019/LN1120 error, and I have no clue why... any suggestions? [CODE]#include <iostream> #include <string> using namespace std; class Time { public: Time(int hour, int minute); Time(); void setHour(int); void setMinute(int); int getHour(); int getMinute(); void incrHour(int); void incrMinute(int); void printTime(); protected: int hr, min; }; Time::Time( int … |
| | Hi, i am trying to write a program which calculates the sum of the prime numbers below a specific limit using an algorithm called the Sieve of Eratosthenes(Wikipedia it). I am getting an error though when i run my program. It says debug assertion fail and something how the iterator … |
| | ..Im preparing my way on studying C# this summer for my C#programming class.. .. well of course, I need a compiler so I could try it myself.. ..I just want to ask what could be the "BEST" compiler I can use for my purpose.. .. |
| | Hello I have this code below where I use the method ->ReadToEnd() to read in the whole file into the String test. The thing is that I have to use the method ->ReadToEnd() in this case because I use another class that only have this functionality. I cant read line …  |
| | I have a pointer object consisting of different arrays of variable length. I want to get one of the arrays from the pointer array and store is in a different array. How would I go about doing it? When I try the method, it gives an error: [B]initialization with '{...}' … |
| | I have a variable [B]x[/B] declared as [B]int *x = y[/B], where [B]y[/B] is also a pointer variable. Is there any way to store the variable in [B]y[/B] to [B]x[/B] without making [B]x[/B] a pointer such that it would look like: [CODE] int x = y; //y declaration => int … |
 | As my projects grow larger I'm beginning to appreciate more robust code with higher re-usability. Also easy to use error handling can make coding for errors much less repetitive. Is there a good online set of articles anyone could recommend? |
| | Hi there I have been building a program separately and testing the code in sections. Which is fine as it works individually. However two of the classes are designed to share variables. The idea is the first class generates a partcile and then scans through a list of gridCells. It … |
| | Hello, I've been looking arround the internet, and I found the command [ICODE]wait(15);[/ICODE] to wait for 15 secons. I used the header [ICODE]#include <time.h>[/ICODE] and I got an error. Can someone please help me and tell me what I've been doing wrong? |
| | im looking for a more efficient algorithm, is there any known one? ive checked my math books and c++ book and really didnt find anything more efficient than the following : [CODE] int first_prime(int num) { for (int i=2;i<sqrt(num);i++) { if (num%i==0) { if (isprime(i)); return(i); } } } bool … |
| | Can someone please help me with this program. These are my instructions that were given to me... When I finish the inputs and it comes back with the numbers the payment amount is wrong [CODE] /////////////////////////////////////////////////////////////////////////////// // // Name: GCD.cpp // Author: Jeffrey A. Stone // Course: CMPSC 101/121 // … |
 | Hello.Does anyone know if you can disable the popup menu from an edit control ?Also can someone suggest a good method of trapping a mouse right click on an edit control within a window's main procedure ?I used WM_PARENTNOTIFY but that message is received from every editbox in my window … |
| | Hello, In my program, I needed to do some functions that are found in windows.h, but I got an error saying that it could not find any of the following: [ICODE]#include <Windows.h>[/ICODE] [ICODE]#include <windows.h>[/ICODE] [ICODE]#include <Windows>[/ICODE] [ICODE]#include <windows>[/ICODE] Could someone please upload a coppy of windows.h for me, and [COLOR="Red"]PLEASE … |
| | I need some help with an assignment, it is supposed to have 9 functions, one being main, and the other 8 void. The ONLY global variables that are allowed is the istream and ofstream. All programs in main are to execute in the order listed. I compile the program it …  |
| | I am doing data analysis and for that I have to edit MS Access file in csv format to labelled format... ie. |Student, Name, Whatever | |12,XyZ,PPP | ------to--------- 1.Student 2.Name 3.Watever 1.12 2.XyZ 3.PPP Please help... |
| | A fun little program that uses your internal motherboard speaker or "Beep" speaker and your keyboard to make a musical instument very similar to a musical KeyBoard. |
| | Hi, I just started learning more about class/objects. What is the purpose of using 'this' pointers and static members? How exactly do you use them? These are some small examples: [CODE]class SomeClass { private: int num; public: void setNum(int num) { this->num = num; } }; [/CODE] What is 'this->' …  |
 | Alright no more prime number generators I promise, but I had to fix the last one... This one uses the Sieve of Eratosthenes algorithm. It can generate prime numbers even faster, than the previous version. 1 million prime number in 2,331 second, ten million prime number in less than 22 … |
 | I am thinking of learning C++ (I already know Python and Java), and a friend of mine is thinking of learning C# (already knows some Java and JavaScript). I know there is a long debated "C++ or C#" ordeal out there, so I am not asking about that! :) (I've … |
| | we had an assigment a few months ago to build a sodoku solver recursively so here it is.... i hope noone was bored enough to build one already. [CODE]//////////////////////////INCLUDES////////////////////////////////// #include <iostream> #include <cstdlib> //////////////////////////////////INFO////////////////////////////// /* */ //////////////////////////////USING///////////////////////////////// using std::cout; using std::cin; using std::endl; const int N=2; //////////////////////////////////PROS////////////////////////////// int sodoku(int array[N*N][N*N], … |
| | Right so what I'm trying to do is to take a text file i.e. in Notepad/MW from disk, encrypt it and transfer it to another computer where it will be received, decoded and stored on disk as a plain text file. I have to use the COM1 serial port to … |
| | so im trying to build a connect 4 gameboard using charecter arrays and it has to look like this O | O | O | O ------------- O | O | O | O ------------- O | O | O | O ------------- O | O | O | O … |
| | To anybody that may know and can help me. I am not looking for an answer to anything I just need to know to write this equation in C++ |
| | [CODE]/* Beginning Game Programming, Third Edition Chapter 3 Direc3D_Windowed program */ #include <windows.h> #include <d3d9.h> #include <time.h> #include <iostream> using namespace std; #pragma comment(lib,"d3d9.lib") #pragma comment(lib,"d3d9.lib") //program settings const string APPTITLE = "Direct3D_Windowed"; const int SCREENW = 1024; const int SCREENH = 768; //Direct3D objects LPDIRECT3D9 d3d = NULL; LPDIRECT3DDEVICE9 … |
| | I have to write this program, and I am not sure exactly how to write the functions and where to put what. I have tried several times, and decided to start over from the beginnning. What i have so far is at the very bottom. Here is the prompt: Overview … |
| | Goal: drag-and-drop from one button to another button and have access to the following info from the original button: - Image - BackColor - Tag Problem: I can only implement one. If I try to implement all three I get null pointers. [code] private void button1_MouseDown(object sender, MouseEventArgs e) { … |
| | Not sure what the exact title should be. But at a point in my text game. I want to have multiple selections. But whenever I put the code (shown below), compile the program, and run it I get this. It goes through my main menu, new game, all the stuff … |
| | [CODE]if (option == 3) { { pmt = (percentage * earnings); cout << "pmt is " << pmt << endl; wr = (0.06 / 52.0); cout << "wr is " << wr << endl; n = (52 * actualage); cout << "n is " << n << endl; retirement = … |
| | Hey Guys I was wondering if anyone can help me with this assignment like completely walk me through it? I would really greatly appreciate it....... I have tried doing it and have came up with nothing. I have been having a lot of trouble understanding this material this school year. … |
| | Hi, I'd like to learn some basic graphics (2D) that would be easy to use and quick (So no OpenGL, or Direct X). Also, it NEEDs to have Linux portability. I've already tried Allegro and paintlib, neither of them could I install and they didn't look quite as easy as … |
| | Hi there I am developing a grid system that would generate non-overlapping grid cells. Upon creating a grid I want to be able to check to see if the potential grid overlaps any other grid cells. If it does then clamp the new grid cell to the already existent grid. … |
 | I have asked this question before on a different forum without success. I would like to know how to do templated type conversions for a class. The syntax is getting me though. Here is what I want: [CODE]class Thing { public: template <typename T> T operator T(); }[/CODE] This would … |
| | Hi, if anybody has a second, I have a quick question: In the following situation, Container can contain any combination of the derived classes. If I wanted to go through "Container", for example, and delete all instances of the class DerivedC, how would I do that? [CODE] class Base; class … |
| | Quick question (hopefully), how do I save an SDL_Surface image to a file? |
| | Hi, I'm making a code that calculates the number of days between two dates. If you punch in 1 for month and 5 for days, and you punch in 2 for month and 1 for day, it should say "27 days between these two dates". Right now the problem I … |
| | hello everyone, i am trying to read a unformatted text file using ifstream. i want to read the lines..i have done by using getline. but my text file format looks like firstname:abd lastname:cbd user name is abd cbd age is 45 height is 66cms I was able to read line … |
| | ı have a question. I know which data type and its specifiers . but ı do not know that for example "int" data type how many number takes or long integer how many number takes. ı calculated their bytes but still ı do not know when ı choose them. again …  |
| | [code] 1>------ Build started: Project: DirectXtutrials, Configuration: Debug Win32 ------ 1>Build started 3/24/2011 5:24:05 PM. 1>InitializeBuildStatus: 1> Touching "Debug\DirectXtutrials.unsuccessfulbuild". 1>ClCompile: 1> main.cpp 1>ManifestResourceCompile: 1> All outputs are up-to-date. 1>MSVCRTD.lib(crtexe.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup 1>C:\Users\Konnor\Documents\Visual Studio 2010\Projects\DirectXtutrials\Debug\DirectXtutrials.exe : fatal error LNK1120: 1 unresolved externals … |
| | we just started studying about linked lists and i wrote a simple code to build up a link list. than post the sum of all the numbers inside the list my problem is that i need to delete all even numbers and i cant figure out what is wrong with … |
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