1,089 Topics
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| | Hi, I am trying to write a program for my mum who is a teacher, the program needs to be able to store students information like their name address SAT scores etc. I have a basic background in c, but i decided to try and implement this program using c++. … |
| | Please help me how can i creat a class and use in windows application for Studen Result card .[COLOR="red"]I want type below code in class and want to use in windows application for student Grade [/COLOR] [CODE] private string MethodGrade(float Avrage) { string Grade; if (Avrage > 91) { Grade … |
| | [COLOR="Green"]Trying to take input from user, put it in array and do the sorting[/COLOR] The code is: [CODE] #include <stdio.h> #include <conio.h> #include <stdlib.h> class Sort { static int array[5]; static int index; static int i; public: void insert(int num) { array[index] = num; index++; } int sortarr(const void *x, …  |
| | Firstly, apologies for the lack of commenting, it will be commented when the program works properly (lol), I'm creating a program which creates a test harness for 3 subjects, employees. This will display their name, ID and payrate per hour, it will then calculates the total amount in 37.5hours. Again, …  |
| | Hi, I am writing a program to solve the 8puzzle, but for some reason i am having more difficulty with the structure than the algorithm.... I have two classes, a tree and node class. My main problem is to put the nodes in an array in the tree class. Second, … |
| | So simple problem. I need to have a division by zero validation in my constructor in this class. It is painfully simple, but I am just starting to learn classes and I just cannot figure out what I have to do. Would it be easier to just put the validation … |
| | Hey, was wandering if somebody could help we with some classes and objects, I haven't done c# in a while and i can't remember. Could someone tell me what String falls under in c#, ie allowing one to write somthing like [CODE] static void Main(string[] args) { string s = … |
| | Hello everyone. I have some problems in implementing some stuffs about genetics in java. Here's the scenario. A human cell contains 23 pairs of chromosomes. Each chromosome in each pair has thousands of genes. Each copy of a gene is called an allele. These alleles determine the different traits of … |
| | Hey guys i'll show the code first then explain my problem: [code=c] Class A { /*Variables required by A, B, C and D */ /*functions required by B and C*/ }; Class B { /*some of it's own functions and variables*/ }; Class C { /*some of it's own functions …  |
| | Hi I am trying to put quicksort in my class like other methods and call it using the main method, I did it for Selection, Insertion, Bubble Sort and I need one more which is quicksort. I already made the calling code for quicksort but I don't know how to … |
| | Hello everyone, I am having some problems with my code and allowing it to do what I want. I need within main to have the account balance from my class to be allowed to change value through "transactions" adding negative numbers for a withdraw and positive numbers to put in … |
| | I am learning c++ now and have encountered a problem in trying to create single digit addition, multiplication and subtraction math questions. The numbers used in the questions are randomly generated from 1 to 9 and when I try to print the answer for the corresponding question, I get a …  |
| | I'm running a structural analysis program in VS2010 which iterates through a loop up to 4000 times. The program keeps breaking on me around the 960th loop and gives the following error Unhandled exception at 0x0040cd1d in Structural Analysis Program.exe: 0xC000005: Access violation writing location 0x00000000. The error seems to … |
| | Here's the scenario: I am coding a program that will display data from a database in a variety of fields. Some of the fields need to be read-only. Should have been simple just to set all those controls to read-only, except some of them are checkboxes, radio buttons and date … |
| | I have a class Matrix2D where the matrix is defined as vector<double> elements. I'm trying to use the function Gauss() to perform gaussian elimination on a matrix a [CODE]bool Gauss(Matrix2D& a) { [INDENT][/INDENT]//Gaussian elimination routine }[/CODE] The function itselt works perfectly and if I view the matrix a just before … |
| | Hi, I'm writing a program for structural engineers that consists of a number of inherited classes. Specifically, I have a main() file which includes a class [I]element[/I] which includes a class [I]node[/I] which includes a class [I]matrix[/I]. [I]element[/I] includes variables of type [I]matrix[/I] and [I]node[/I], and [I]node[/I] includes variables of … |
| | Hi all, I am creating an application that includes and calls upon someone else's code. I need to slightly change the functionality of a constructor in their code but the class I need to change is buried away very deep. I considered inheriting from the class so I could change … |
| | Please help me in Binary XOR operation using C++? Please help me in Binary XOR operation.... This program will ask user to enter their input..After that the program will convert to Binary Code for each character that user have entered. After that i create a multidimensional array to store for … |
| | i hv made it sorry for the disturbance |
 | I need a few helps for some things that I just cannot get the syntax of! (I need these, and if you don't believe me I can post the reason) 1) Creating a function within a function 2) Creating a class within a function 3) Declaring a template function outside …  |
 | Not my code but I think free to share. This is intended as beginning point of learning classes or learning data structures. Read the document [url]http://mcsp.wartburg.edu/zelle/python/python-first.html[/url] As first exercise, this does not work instead of the while loop in test part: [CODE] for i in numbers: print i [/CODE] [QUOTE] … |
| | Hi! I have a question regarding a problem I've faced dealing with object oriented PHP. I'm used to always return a value after a method has been executed and then use the returned value in other methods. But that's because I've always done that in procedural programming. So I wonder … |
| | I need to be able to loop and get information for up to 10 "BankAccount" arrays, but when I use less than 10 it gives me garbage and I don't know how to fix it. Here is my Code. [CODE]#include <iostream> #include <iomanip> using namespace std; class BankAccount { private: … |
| | Hello, I am having some troubles with coding from one of Joyce Farrell's books here is a link showing the exact thing to which I am trying to figure out. [URL="http://books.google.com/books?id=akzWMS9_PYoC&lpg=PA327&dq=BankAccount%20Class%20from%20Joyce%20Farrell&pg=PA331#v=onepage&q&f=false"]Exact question[/URL] Here is the code I have written thus far. [CODE]#include <iostream> #include <iomanip> using namespace std; class BankAccount …  |
| | I am having problems accessing a variable from one class to another. [CODE] class Player(pygame.sprite.Sprite): def rotateShip(self, rotAmt): radians = self.rotation * math.pi / 180 [/CODE] I am trying to use the variable radians from class Player to another class. radians only exists in 'rotateShip'. Thanks for your help in …  |
| | Hi, I'm trying to make a program that will write to a file and tell it that the next time that the program is run to not do the first part of the program. [CODE] fstream install; //this is what all of the tutorials say to do. install.open(ready.txt); //this is … |
| | I am working on making a 'safetype' abstract class, which will have a complete set of pure virtual operator overloads to help make sure that a class inherited from it is safe to pass to virtual any function. The problem is that I don't know the syntax of a pure … |
| | normally to get my items from mysql to an array i use this code [CODE]while($row=mysqli_fetch_array($result)) { $array[] = array('id' => $row['id'] ect...) }[/CODE] anyway I am using some OOP in my code so now I don't know what the row names from mysql are named to use in the while … |
| | well I am having a problem with my class I made to connect to my DB ok here is the class[CODE]class database { private $db_host = 'localhost'; private $db_user = 'root'; private $db_pass = 'McSteel8'; private $db_database = 'cmte'; public function connect() { $this->link = mysqli_connect($this->db_host, $this->db_user, $this->db_pass); mysqli_select_db($this->link, $this->db_database … |
 | I have used DirectSound for years but I have started a new Direct3D 10 game and wanted to use something more supported and newer. Target VC++ 2010 build for Win7 platform, prefer an OOP model if one exists. Suggestions? |
| | Hello Everyone, I have a random number game program that I need to change to use a Class with a constructor. This is my first attempt at using these things, and the instructor hasn't been much help. I watched all of antiRTFM's videos up to video #37, but using constructors …  |
| | Basically this program uses an abstract class which 3 other classes extends to so that in the end an overridden toString() method will print out how many pages must be read for each class. Okay, well this program is for a class, but I am kinda of stuck because my …  |
| | I am finding it hard to do this the in OOP/event driven environment. I am trying to make a typing tutor in Visual C#. So I've already made an array where each elemnt is a single word. Now my next steps are, parse the first word, seperating each letter. Then … |
| | [code=text]jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=C:/Users/Kix/Desktop/IMPORTANT DOCS/oop/BANKSYSTEM/Accounts.mdb;DriverID=22;READONLY=false} Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at banksystem.BankDBDriver.retrieveData(BankDBDriver.java:200) at banksystem.BankSystem.actionPerformed(BankSystem.java:109) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6267) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6032) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4630) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4460) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4460) … |
| | Hi, I am writing a program that allows to keep track of some racing records and to do this I need to be able to save objects on a external file and then load them with next startup of the program. As I am just a beginner I need your … |
 | Because I honestly feel like I'll never understand them(it's been years by the way). So I just want to know if it's possible to make any program you fully desire with out pointers or any other complex OOP such as encapsulation and typedefs. I just can't work with that logic. … |
| | Hey Guys, I have the following code: [CODE] class A { int a,b; A(int i,int j) { a=i; b=j; } void showab() { System.out.println(a+" and "+b); } } class B extends A { int k=20; void showabk() { System.out.println("a="+a); System.out.println("b="+b); System.out.println("k="+k); } } class Test { public static void main(String … |
| | Hi, I am working on a piece of OOP which needs to be ran entirely by classes, by that meaning the main function should only create the first class and the rest of the program ran by member functions of various classes. Part of this task requires me to keep … |
| | I have a problem with using globals within class scope. For example: [ICODE] $GLOBALS['test'] = "How are you?"; class great { [INDENT]function grace() { [INDENT] echo $test; echo $GLOBALS['test']; [/INDENT]} [/INDENT]} [/ICODE] Problem is, that neither of the echos produce any output. Is there a problem with accessing superglobals from … |
| | I am in a distributed education programming class, our most recent assignment has me stumped with a error that is driving me insane. The IDE I have on my personal computer is missing some of the libraries I need(I believe), and when I remote desktop to my school's computer and … |
| | Hello, I'm new to c++ and we're just starting classes and objects in class. I've done a bit of programming in Java and I'm struggling to initialize an object using a variable. I must be missing something fundamental but I can't for the life of me figure it out. Here's … |
| | Hello.. I'm new with java and have some problem with my assignment. I want to write a class named phoneBookEntry that has field for a person name and phone number. The class should have a constructor and appropriate accessor and mutator method. Then, write a main class that create five …  |
| | I'm an amateur web developer trying to move toward more professional coding practices, and I'm making my first site that makes extensive use of ajax. I've used the xmlHttpRequest object on a few occasions, for which simply creating functions as I needed them were adequate. But the site I am … |
| | I have a class that stores all of my variables and functions (for our purposes, DataClass), and a few different windows form classes that use the public variables and functions in DataClass. I need to keep the values of the public variables in DataClass until the program closes. I set … |
| | Hi Iam running into a problem when using classes and inheritance. I have a base class which contains a member function whos job it is to create and intialize some variables that are shared between other classes. The other classes are inherited from the base class and the variables are … |
| | This may be a simple fix, but I have a class for a program that contains some member functions that manipulate a vector. The vector is a private member variable, and is filled from an array using a constructor. When I try to access the member functions to manipulate the … |
| | When writing a program that uses separate compilation (I have a header file, a .cpp file that declares all the member functions of the class in thee .h file, and an application file). I used a constructor to pass the contents of a dynamic array to a vector, but it … |
| | Hi all, I'm almost done with a problem for a java class I'm taking. The chapter I'm studying is on inheritance and I think I understand it ok. The parent class will compile fine, but when the child class tries to compile I get an error saying it cannot find … |
| | Okay, we had an assignment in computer class that I have been working on for awhile but what I've got so far isn't working. It seems that it may be a compiler issue, but since I can't get to a linux compiler (what the program will be evaluated on), and … |
| | ok i think that i am missing something here but i not sure what. i have a function with a class that is supposed to take all the data make a query and then put into an array the data i would like to collect later function [CODE] function getDataLoop($strDbType, … |
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