709 Topics
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| | Unable to cast object of type 'System.String' to type 'System.Windows.Forms.TextBox'. |
| | Hi. I've a BST created for an address book application for my term project. When inserting into the BST, I insert items sorted by their first names in ascending order. The thing is that the user should be able to display the BST in the ascending form of last names …  |
| | Hi all. As a part of my project I need to get the address book information saved in a .txt file into a Binary Search Tree. The info in the address book is stored like the following: First Name, Last Name, Date of Birth, E-mail, Phone, Address, City, Zipcode So … |
| | I have code where I am pulling data from my database and it needs to be separated by commas except the last value (that part works) so I can take those values and input into another SQL query. Here is the working code: [CODE]$biz_id = $row_businesses['id']; $query_related = sprintf("SELECT * … |
| | Hey, I have a question on how to make an inline style to this..: [CODE] $sqlCommand = "SELECT * FROM pages WHERE subjectid='" . $subjectid . "' AND showing='1' ORDER BY pos ASC"; //*** $query = mysqli_query($myConnection, $sqlCommand) or die (mysqli_error()); $PageMenuDisplay = ''; while ($row = mysqli_fetch_array($query)) { $pid … |
| | Hello everybody, I have a xml socket server which get data from xml sockets out of actionscript3. Now I'm having a lot of if statements. Can I use another way to make my code more clean? Ivibot is a piece of hardware my school provided. LedBlink is a runnable class …  |
 | hi... I am using sorted dictionary to add nodes in a hierarchy but i have to show multi-parent multi-child relation but sorted dictionary doesn't allow duplicate entries :( is there any way if yes please suggest I will be honored Thanks in advance |
| | Hey guys I've been asked to create an array of objects on the heap for my assignment but I cant seem to find any examples that explain it well enough on the web. So what I got is: [CODE]//Heabder File class Wheel{ public: Wheel() : pressure(32) { ptrSize = new … |
| | I'm having trouble formatting a binary tree. In my program, the tree format should print every output as such: 35 30 29 25 24 20 15 This is the code that I have thus far. [CODE]public void treeFormatTraversal(){//begin int level = 0; if(root !=null) treeFormatHelper(root, level); else System.out.println("\nTree is Empty\n"); … |
| | hey people, i have the following problem, i'm setting up a webshop with over 2k items and every 6months the prices are changing(wines) so i was wondering how to import an xml file into a mysql database without having to go in phpmyadmin. this because i don't want the people … |
| | I have been trying for about 6 hours to get this program to work. It's a C++ program for for loops. I am trying to go through a book, but I don't have source code for how this should be. I need to make a program that looks like this … |
 | Dear experts in Python, I have written a binary search method that receives a list of float and one new float item. It needs to look for the proper index for that item to be placed and return that index. To make it simple, I give an example: imagine a … |
| | I am converting seconds to minutes, hours, days. For some reason I have an issue with the days not calculating when running the program. The 'if' statement seems completely ignored by the program. I think this may be caused by the warning I get. Any help would be greatly appreciated … |
| | I am currently attempting to write a single [B]recursive[/B] method (per instruction) whereas the items in a binary tree are displayed in a horizontal hierarchical manner (level order traversal). The UML describes the method as: levelOrderTraversal(TreeNode<T> tree, Integer indent) - tree: a node in the binary tree - indent: describes … |
| | So here is my problem, my friend and I are writing a simple project for a electrical eng. teacher, who really doesn't know too much about programming c++. We were assigned to make a successive approximation ADC [URL="http://en.wikipedia.org/wiki/Successive_approximation_ADC"]Look here[/URL] in any coding language possible. I would have liked to make … |
| | Hey everyone, I have to manipulate two functions RECURSIVELY, strlen and strcpy. I was able to code the strlen: [CODE]int length(char* str){ if(str == NULL){ return 0; }else{ return length(str, 0); } } int length(char* str, int l){ int len=0; if(str[l]){ len = length(str,l+1); } else { return l; } … |
| | Hi there, Please can someone help me! I have recently been learning oop PHP. I have created a class for my database, which basically makes my life easier when doing queries. I have created a "where" method which basically when used will append to the select statement. For example: //class … |
| | [CODE]#include <iostream> using namespace std; int main( ) { int num1 , num2 , num3; cout << "Please Enter Three Valid Integers Using The Keyboard"; cin >> num1 , num2 , num3; if {num1 => num2} && {num2 => num3} else num1 + num2; if {num2 => num1} && {num1 … |
| | i need to make a program that implements a heapsort using a binary tree. i understand the algorithm for how to do the sort, and i understand how it would be done using an array, but for my class i have to use a binary tree. The problem i am … |
| | I hate to post a thread on this since I know this topic has been discussed ad nauseum, but I've been searching for weeks and cannot find exactly the answer I've been looking for. I'm new to arrays and loops - I get the concept, but not the syntax. Here's … |
| | Hi! What could be the best algorithm for "Merge Sort" where the memory must be used "most effectively"? I just know the standard way to do this, but that's not the most effective way how to use the memory. This is the only variant which I know: [CODE=c] #include <iostream> …  |
| | CONVERT THIS QUICK SORT PROGRAM INTO PARTITION OF 3,5,7OR 11 ELEMENTS. [CODE] #include"stdafx.h" #include<iostream> using namespace std; #include <stdio.h> #include <stdlib.h> #define size 50 void swap(int *x,int *y) { int temp; temp = *x; *x = *y; *y = temp; } int partition(int i,int j ) { return((i+j) /2); } …  |
| | /*Does the Bubble sort algorithm above sort the array into ascending or descending order?*/ void BubbleSort(int Data[ ],int ArraySize) { char sorted = ‘f’; int pass,a,Temp; pass = 1; while (sorted=='f' && pass<=ArraySize-1) { sorted = 't'; for (a=0;a<ArraySize - pass;a++) { if (Data[a] < Data[a+1]) { Temp = Data[a]; …  |
| | Hi, I have a list of base types which stores multiple derived types. The following code shows a simplified setup. [CODE]#include "Base.h" #include "DerivedA.h" #include "DerivedB.h" #include <iostream> #include <list> void main() { std::list<Base*> base; std::list<Base*> *basePointer = &base; for (int i = 0; i < 10; i++) { basePointer->push_back(new … |
| | pls any one tell me why the loop is not ending?? (program for quick sort)[CODE][/CODE] [CODE]#include<stdio.h> int partition(int a[],int l,int r); void quicksort(int a[],int low,int high); int loc,temp,pivot,a[50],low,high,left,right; int main() { int n,i; printf("\nEnter the no: of elements : " ); scanf("%d",&n); printf("\nEnter the numbers : "); for(i=0;i<n;i++) { printf(" … |
| | I'm new to java and seriously needing some help..I'm having problems deciding accessor and mutator methods.. and how to create an ArrayList. Write a program that uses an ArrayList of parameter type Contact to store a database of contacts. The Contact class should store the contact's first and last name, … |
 | I just started looking at iterators in my C++ class and don't think I fully understand enough about them to actually create one. I need to add an iterator to this doubly linked list program: [CODE]#ifndef CSLIST_H #define CSLIST_H #include <iostream> #include <cstdlib> using namespace std; template <class T> struct … |
| | Hello :) I'm creating a license plate recognition system for my coursework at University. We need to use Binary trees, which I've done but the information needs to be stored in a file to read and write to. I've created some text files with XML tags in for Cars, Lorries, … |
| | Hey, it's me again. Again with a topic that has been covered here but reading through the old threads didnt help me to solve my problem. And I am pretty clueless at the moment. Consider the class passenger_queue with 2 functions, namely: [CODE]int passenger_queue::get_passengers_waiting() const { // Insert your code … |
| | 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 … |
| | I'm working through an exercise to create a short program to calculate E using the series 1 + 1/1! +1/2! + 1/3! + ... The summation has to stop when value of a term is less than a value entered by the user. The code I have to produce the … |
| | Hey, I made this code with the bits and pieces of knowledge i have, but i don't know how to convert it into a while loop. it is currently in a for loop. the program counts how many certain letters there are in a sentence/ word. String word; String letter; …  |
| | I'm trying to write a method that draws a rectangle. If the user enters height = 4, and width = 8, and the print of character " * ", then the left rectangle is drawn on the left if the filled flag is true. If the flag is false, then …  |
 | I have a little problem with my if statement. I have a code where I am comparing if a sprite has moved far enough for another one to generate behind it. Here it is (the dots are choped out code): [CODE]if (unit > 0) { if (moved > speed + … |
| | Would somebody please assist me? I have been consistently been doing trial and error with my counter. You see, when the program cannot locate an item (which is typed at the bottom) it displays "Sorry, no such item number exists, please enter another one or 0 to stop." Every time … |
| | Hey guys, I'm seriously breaking my head over this one. This project should have been finished 10 hours ago but I've been stuck on this for ages. First I set the DataSources / Dataviews of all the things I need; [CODE] Dim dsPubs As New DataSet() dsPubs.ReadXml(pathdone) DataGridView2.DataSource = dsPubs.Tables(0) … |
| | i have the following code for getting the number of files on a drive: [CODE] Dim num As Integer = 0 Dim drive As String = "C:" For Each File In System.IO.Directory.GetFiles(drive,"*",System.IO.SearchOption.AllDirectories) Try num += 1 Label5.Text = String.Format("Files found: {0}", num) If num > 50 Then RaiseEvent start() End … |
 | I've been messing arround with this for the past little while and I can't seem to figure out the best way to to about doing this. Essentially, I'm trying to create a three part statement. The first will check is a session variable isset & the user has a rolecd … |
| | I'm trying switch the twitter javascript widgets out depending on the time. So in the day, the twitter widget will be colored differently than at night. I used the code that twitter gave me and came up with this code. But I get a syntax error in DW on the …  |
 | Ok, so you know how, if we want to output the elements of an array to the screen, we have to make a for loop right? So I have the following code... [CODE] char array[] = new char [10]; array[0] = '1'; array[1] = '2'; . . . . array[9] … |
| | I need to use mergesort to sort the data in a file that has the names and ages of 10 different people , first i have to sort the names in ascending ascii order and then i have to sort them by their age but im not sure how to … |
| | Hi. Basically I first made some code to do mergesort on a list of numbers. Worked like a champ. Then I said, what the heck, why not do a mergesort on an array of structs, this is where it gets a little funky. While the first sort of the data …  |
| | Hello, I've been looking at this problem for a few hours, and I can't figure it out. We had to test this code and fix it if we find errors (it's a splay tree): [CODE] public class SplayBST { Node root; int count; int level = 0; public SplayBST() { … |
| | I'm having trouble figuring out how to use exceptions to check if a file stream was created successfully. I know I can use if statements, but how do I do this using try/catch statements? It compiles successfully but it gives me an error when I supply a non-existent filename as … |
| | I want to be able to create JLabels, all different names, with a for loop ex: [CODE] static JLabel[] totalAYearLabelYr = new JLabel[termYears]; [/CODE] So I got 30 JLabels named totalAYearLabelYr, which I'm not sure you can have 30 JLabels named the same thing. I wanna name them all totalAYearLabelYr1 … |
| | Hi, I'm pretty new to CakePHP, and have been managing so far. I've created a scraper that scrapes TV.com for episode information (episode number, airdate, title, description). The scraper works fine, and returns an array such as: [CODE]Array ( [0] => Array ( [name] => Stowaway [number] => 17 [description] …  |
 | So I'm trying to define a counter in a while loop, and print it from the class: [CODE]public class odd { public static void main(String[] args) { System.out.println("Input your number"); int x = IO.readInt(); int odd = 0; int even = 0; while (x != 0) { if (x % … |
| | [CODE]int userChoice(){ int choice; cin>> choice; while (choice!=1 && choice!=2){ cout<<"that is not a valid choice please choose again "; cin>>choice;} return choice; }[/CODE] the whole point of this is that if a user doesnt enter 1 or 2 then it tells them to enter 1 or 2 and wont … |
| | Here is the snippet of code I am having issues with. cout<<"So are you a male or female, Please type m/f"<<endl; cin>>sex; if (sex='M','m') { alcohol_distribution=.73; } else if (sex='F','f') { alcohol_distribution=.66; } So I know I have this terribly wrong, but i want the alcohol_distribution based on whether or … |
| | Hello, Can anybody explain to me how can I do: Implement the Random partitioning version of Quicksort. Take care that your data array is not copied (by value) into your subroutines, because you will sort the RandomEnglishDictionary.txt file. Report the first, 1000th and last elements in your sorted list. Thanks |
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