Software Development Forum

I'm been working through my textbook and just can't seem to understand the section on covariant return types. ie) what are covariant return types, what they are used for, etc. The definition in the book is as follows. [QUOTE]An overridden method in a derived class can return a type derived …

I am trying to pass some url information into tokenize_urls from process_and_display_information. To get things up and running, I am simply trying to return and retain some array data from tokenize_urls into process_and_display information. However, I am running into an issue where the variables are created and sent back from …

Hi, I am having a problem with the if statement that I created in my code. The condition should be: - Select Both Comboboxes (1&2) to print out a text in TextBox1 - If only One Combobox or No Combobox was selected, an error message appears and Nothing is printed …

Hello, Can someone tell me the equivalent perl script/command for following unix command: sort -t"|" -k1,1 -T '/temp' input.txt > output.txt Here, I want mention different physical directory for temprary sort file storage. like - T in unix shell command. In other word, How to mention different workspace directory in …

Hi Can any one tell me how to call a subclass method from a superclass? For example: I have a class A,B and C. Now B and C extends A. So is there any way that we can call a method of B in A? Thanks Abhishek

Hi all. Can i open the web page through perl? I get URL as a result in my perl code. but, ofcourse, it is displayed in command prompt as i'm using windows. I need that web page to be displayed directly. can i do it? i hope somebody can help …

Hello all, Im new to VB so go easy on me :-D Im trying to autofill a html form and all textboxes and textarea is working ok.. I now have a problem with a combobox1. I added the items below to the combobox1. So whenever i choose one of those …

now i'm try to make the delete and successor method for BST in java[CODE]public void delete(BinarySearchTree<V> pointer) { // 1. The node is a leaf. // 2. The node has no left child. // 3. The node has no right child. // 4. The node has two children. BinarySearchTree<V> current …

Hi I have a datagridview in my winform application and I have 2events related to it. one is [COLOR="red"]Cellformatting[/COLOR] which is formatting a row in datagridview as per different values. and another is [COLOR="red"]UserdeletedRow[/COLOR] event which allows to delete a particular row. but there is a conflict as I have …

I am trying to publish this program. I rebuilt it, then hit publish. It starts, then at the end its throwing up 18 errors and they all look similar to the error below. About 15 of the other errors end in .dll.deploy. Ive never seen this type of error before …

[COLOR="Green"]yo evryone. class 11 kids submit a comp project as olevels paper 2. im a few years away from 11 but iwud love to make a project write noe n get an idea n so make an awsum one in 11 after this experience. buti dont hav any idea. i …

[code] #include<stdio.h> #include<conio.h> #include<string.h> #include<stdlib.h> #define M 20 #define hr printf("\n----------------------------"); #define br printf("\n"); int mptr=0,pptr=0,sptr=0; struct input_code { char lbl[M]; char instr[M]; char op1[M]; char op2[M]; }input[M]; struct opcode_table { int num; char name[M]; int code; struct opcode_table *chain; }mot[26],pot[26]; struct symbol_table { int num; char sym[M]; int addr; …

Matrix given in memory to print the spiral in opposite direction from clockwise (left column down the right lower range, right up column, a series of upper left, etc. until you get to the middle) I'm new here, I have to write code for the task above in assembly,could someone …

Create a function generateNumbers(num) that takes in a positive number as argument and returns a list of number from 0 to that number inclusive. Note: The function range(5) will return a list of number [0, 1, 2, 3, 4]. Examples [CODE] >>> generateNumber(1) [0, 1] >>> generateNumber(10) [0, 1, 2, …

the objective is to create a function to determine, from the three sides of a triangle, whether it is isosceles or not. I wrote the following code, yet its not very efficient, how could i have done this better? and is there anything wrong with this code? i tested it …

I need to copy a certain line from a text document, this I have done by using a "key-word" in the document. My problem now is that I also want to copy the entire line below this specific line. Help is much appreciated as I am new with programming FILE …

i want to create shapes like circles,rectangles and others with the help of c language programming.basically i want to make the sign of matrix in my program.how can i do this?

hi all i am facing a problem with the below code i used keylistener so that when i click letter 'v' the program has to exit. But the following code is not working. Help me please.. i think we should add listener to the code but how to add listener …

Im trying to move all files from "C:\SSIS\Test1\" that are new than 2 days old to the C:\SSIS\Test\" but for some reason it keeps skipping over the if statement marked in red. Any help please. Very amateur programmer here! [CODE] Sub Text() Dim sDay As DateTime sDay = DateAdd(DateInterval.Day, -2, …

[CODE]#include<stdio.h> #include<string.h> void FindWord (char used[30] , char string[30] , int wordsize); char* CleanString (char string[30], int wordsize); int main (void) { FILE *fp; char letters[30]; char words[30]; char used[30]; char *string; int wordsize; int input_size; input_size = wordsize = 0; fp = fopen("dictionary.txt","r");/*contains a list of words in the …

Am trying to BACKUP database in .bak format and when i compile it am getting [B]-2147221504 source file doesnt exist error [/B] can anybody please HELP.. Thanks in advance

I have this OLEDB connection string connectionstring as string = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & _ data.toString & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=2 I just want to know what is the meaning of HDR and IMEX, and what are their purpose on the connection string Thanks..

Hi all, Check this code and please tell me a solution.I have 2 buttons (Pizza & pepsi),the price should display in textbox8 when i click on button, here the price had shown in Textbox8,but it is not getting added with next price when i click second button. [CODE] Private Sub …

'why is that when i change something on one form, when i ran the program,the changes i made don't seem to take effect? example, i set a button's visibility to false, when i ran that form, the button still appears. even if i already saved it before running i already …

Hello, I have this code for sending and receiving file transfer using C#. But I don't know how to send the file name and save it as file name.. have tried many methods and googling too and still haven't found any clue. Here the client send file: [CODE]Stream Fs = …

I Having Problems with my program. I hope someone will help me with my problems. By the way, I need help regarding Going Back to Menu using Loop. Thank you very much! if you have seen any problems, please post your message. Thanks! [CODE]#include <stdio.h> void main() { float usd, …

I know to work with VB.net + crystal report + SQL server. But now i want to work with SQL server compact edition instead of SQL server. When we creating Crystal report it is asked provider in one moment. If we work with SQL server we select "Microsoft OLE DB …

I was wondering if someone could help me, im looking to make a program to check if an item is in stock on a website, but im not too sure about how to go about it. Any pointers?

Hi everyone.. Problem: no space between each tables.Could anyone please advice.. solutions: here is the coding: protected void btnShow_Click(object sender, EventArgs e) { if (ddlMonth.Text != "") {d.Controls.Clear(); DateTime start = DateTime.Parse(ddlMonth.SelectedValue); DateTime end = start.AddMonths(1).Subtract(new TimeSpan(1, 0, 0, 0)); switch (ddlRecurr.Text) { #region Daily case "Daily":{ foreach (preventive p …

I made a function that would allow me to get the current date and put it on a string in YYYY.MM.DD format. [CODE]string Date::getCurrentDate(){ char datenew[8]; char currentdate[8]; string s; int size; _strdate(datenew); currentdate[0]=datenew[6]; currentdate[1]=datenew[7]; currentdate[2]=datenew[5]; currentdate[3]=datenew[0]; currentdate[4]=datenew[1]; currentdate[5]=datenew[2]; currentdate[6]=datenew[3]; currentdate[7]=datenew[4]; size=sizeof(currentdate); s.assign(currentdate,size); return s; }[/CODE] I keep getting a …

Hi I am trying to write a script in Bash Shell. I have the file test.txt and has the following data: AIR DR [ 4] Pressure :50 AIR UR [ 3] Pressure :70 WATER DR [ 3] Pressure :90 [ 3] PIS: 402ps WATER UR [ 3] Pressure :110 [ …

Hi, Each line of file contains a timestamp value(ex: 2012-01-16 14:43:23) which denotes the time at which a particular action was performed. I want to extract the logs for all the actions performed in the last 2 hours using awk. That is, where timestamp should greater currentTime - 2 hours …

Hey all! I am writing an application that will read data coming in through a serial port (RS232) and write that data to a file. This file will then be parsed by a php script and the data will uploaded to a server. Is there a function that allows me …

I currently have the following code [CODE]Data1.Recordset.Sort = ("Barcode ID DEC")[/CODE] In which i want to sort all the Barcode ID records in Descending order. The barcodes have leading zero's which i think may be the problem. For example 00000055. Any suggestions?

I am working as a programmer for a hospital. I want to use barcode scanner in my application. I just want to know how can i provide input to my application which can read the barcode of a particular medicine and accordingly makes necessary updation in the database. Any One …

Hi masters, I want to replace a string with another string in textbox How i can do this? Please help Thank you

I was just wondering if I can retrieve two tables from my database to one form? because i'm trying it but it doesn't seem to be working. just the first table i'm trying to retrieve is working.

I have an application and an sql server i would like to add Registration Code for the system. that should include the number of user

Hi, i am adding a few lines to the multiline textBox in a Windows forms Clr application. However each and every time the vertical scrollbar goes to the bottom. How/Can it be stopped ?? [CODE] textBox1->AppendText(array[i]); [/CODE]

Never Mind the title of the post guys and gals… it turns out that writing the post helped me vent my frustration and clear my mind. I found the issue and solved the problem while I was writing the initial post! I'm writing this because I haven't figured out how to …

I've looked around for about an hour and can't find anything that was to terribly helpful, or I didn't know how to use it. So here it is. [CODE]#include<iostream> #include<new> #include<cstdlib> #include<string> using namespace std; struct student { string name; double gpa; }; student doSurvey(student s); void reportSurvey(student s); int …

I want to know how to write a program to print A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Input = A M output = N z

I am trying to get a program to return a coord that increases or decreases in either X or Y given an input of either X, -X, Y, or -Y. It starts at (0 , 0). When I run it however, it always returns (0 , 0). What am I …

Ok I have Googled for the answer but couldn't find one. I want to run my project on another computer without visual studio. I have created a setup file but after installing also i need visual studio.Isn't there any another way round?

I think my issue is in line 18. The program runs just fine, but my answer isn't correct when I enter a radius and height. Not sure what I am doing wrong here. [CODE]import java.util.Scanner; import java.text.DecimalFormat; public class ConeA { public static void main (String[] args) { double surface; …

Some one help me here my problem is on the [CODE]conn.Open()[/CODE] it stated that "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to …

I've been trying to better my lesser side of knowledge in the C# programming language by tackling graphics head on. I've learned a little bit, but I'm getting stumped right now because I can't explain 100% what's going on here. I've developed a Pong game to teach myself how to …

A snippet: package com.deitel.jhtp7.ch14; public class AccountRecord { ..... Doubt: 1. What does the above package statement imply. As in how(path) this AccountRecord.java will be stored? As in what folder hierarchy should I create? 2. In Command prompt I have set my Current Directory as : E:\RDL\Dropbox\Coding\Core Java\File So will …

I wouldn't normally ask for help like this but im getting quite desperate. I really need help with a java assignment that I'm really struggling with (I haven't done any coding in over 2 years so lost just about any knowledge i had) the assignment needs to have a collection …

I am a bit confused here; I have this expression [CODE] ! (1 && !(0 || 1)) [/CODE] What would this evaluate? I tried to see it in logic as I go the steps: NOT (1 AND NOT(0 OR 1)) //0 NOT 1? what is this mean? How I can …