Software Development Forum

What is a flag in java? when do we need it in our program? what it is used for?

` print "Welcome to my quiz" begin = raw_input("would you like to begin?: ") if begin =="yes": print "A)True" print "B)False" q1 = raw_input("Is Steve Jobs is the founder of Apple?") if q1 == "A" or q1 == "a": print "well done! you got it right!" else: print "thanks for …

Hi there, how can I split a string into variables?? better: string s = "one,two,three,four"; // Split string on character comma. string[] words = s.Split(','); foreach (string word in words) { Console.WriteLine(word); } how can I put an incrasing variable (for n splitted words) instead of 'Console.WriteLine(word)' thanks

I understand how to write a function to loop through a vector<double> and calculate the mean and standard deviation of its values, but I was wondering if there is a library which I could simply #include<> and then just call a function to compute such values.

So i am doing a program that opens a file that contains grades and shows the average, total, etc.. But at the end I am supposed to make a histogram that would look something like this A= * * B= * * * C= * * * * * * …

Hi all, I have a procedure that compares release dates to file download dates. I have a download folder that is added to a string Dim strFilePath = "\EconomicDBTemp\DownloadedCSVs\" I've removed the directory but the folder DownloadedCSVs is where I need to search each csv file. However, I am unsure …

I have two forms that share data between eachother. 1. In Designer view of Form2 I establish a public variable. public bool isMyFormValid 2. When I attempt to access the variable in Form1 like this... if (Form2.isMyFormValid = true) { //do this} C Sharp no likey... I get this message: …

I have created threads dynamically. static void Main(string[] args) { int ThreadCount = Convert.ToInt32(ConfigurationManager.AppSettings["Threads"]); List<Thread> th = new List<Thread>(); for (int i = 0; i < ThreadCount; i++) { Thread t = new Thread(print); th.Add(t); } foreach (Thread t in th) { t.Start(); } } public void print() { console.writeline("123"); …

please suggest me turbo c version for windows 7,32 bit which supports full screen mode and also supports graphics functionality....as soon as possible....

Good day, I keep running into a very persistent "Could not fine installable ISAM" error when trying to connect to an Excel sheet (office 2010) by opening an OledbConnection Here's my connection string: Dim strCon As String strCon = "Provider=Microsoft.ACE.OLEDB.12.0;ACE OLEDB:Database Password=" & strEnter & ";Data Source= " & strExcel …

Hi, I am trying to solve a maze using queues(no recursion) What I've done so far is that I can figure out whether or not the maze can be solved. What my next step should be is to list out STEP BY STEP how the maze will be solved. For …

I have been working on a program for class- yes this is homework. I have completed the program, it runs- yay newbie me- but it does not run correctly. I am working with functions, wether referenced or not, and I have passed several values to a function inorder to calculate …

Hello everyone. As the title suggests i need to implement a type of timer based function inside a UI Thread in MFC. Although CWinThread is a UI Thread and has a message pump it does not have a Timer function as CWnd::OnTimer Is there any way i can implement a …

Hello, So basically, I am trying to create a system based on the Singleton Pattern and I'm confused. If I have an Animal class, as well as a Cat class which is derived from Animal and then using a Singleton class will create a single object of which-ever class has …

I need some help here. I am writing a little desktop app that monitors my ToDo database and whilst it works great when run once, it kind of freaks out when I run it from a timer. As in all the labels start repeating. Below is the entire code. Imports …

i need help finish this program for an assignment, It should play the Rock, Paper, Scissors game. The nextPlay methoded needs to be filled in with nested switches. thanks for your help import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Rps extends JFrame implements ActionListener { private final char moves[] …

Hi I've tried the code below to merge 2 linked list which f1 and f2 are the first nodes in the initial lists and the "first" is the first node in the result list. But it doesn't work! [CODE] node *merge(node *first,node *f1, node *f2,int n1,int n2){ int n=n1+n2; while(n-- …

In my project I have a datagrid with 2 columns namely "codes" and "description".there are details under code and description columns.I wanted to print the datagrid.please help me.

I don't know jack about Visual Studio, and I'd like to keep it that way because I like doing stuff on the command line, I have my preferences. But my teacher uses it to compile and I'm curious what I did wrong because gcc didn't throw anything. So, code (Without …

Hey guys its me again...im having some problems modifying the data in the DataGridView The error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where UserID='3'' at line 1 and it highlight this …

Hey guys i need some help on how to create a connection of a relationship between two forms...for example I have a DataGridView on another form....with a search button.. if i click the search button another window will pop out with a text box lable "Look For:" and a combobox …

Hey guys im having problem with the registration form that i created the error shows after i tried some error handling if the username already exists this is the error message: `{"Invalid attempt to Read when reader is closed."}` and this is the error highlight `While mydr.Read()` Heres my code …

I was trying to building a java project with a run function. Problem is, the build file is located at the base directory and file with the main method is in the /contents/username/ subdirectory - I can't seem to properly call the file even though when I run Ant compile, …

Hi Everyone. I'd appreciate your help writing better code. I have a list of ~1000 values: list_of_values = [0x123D, 0x844F, 0x33E9, ....., 0xFFFF, 0xFFFF, 0xFFFF] The last values in the list will always be 0xFFFF, but I don't know how many exactly. What I want is to get rid of …

(Before I ask my question, I have tried looking through google and the site already, and didn't find anything relevant to what my problem was. All I was finding was more complex than my current level.) Anyway, my problem is that I'm getting an "expression must have (pointer-to-) function type …

public class j_01_FLOW_06 extends JApplet implements ActionListener { //Choice shoplist = new Choice(); //ButtonGroup bg_group = new ButtonGroup(); CheckboxGroup cg_group = new CheckboxGroup(); JCheckBox cb_i1 = new JCheckBox("fafa"); JCheckBox cb_2 = new JCheckBox("wfw"); JCheckBox cb_3 = new JCheckBox("Computer"); String s_value[]={"white sox","red sox","mets","cordianls","blue jays"}; JList l_list = new JList(s_value); Container c; …

public class J_01_FLOW_08 extends JApplet implements ActionListener { String s_value[]={"white sox","red sox","mets","cordianls","blue jays"}; JList l_list = new JList(s_value); JLabel l_label = new JLabel(); Container c; FlowLayout flow = new FlowLayout(); public void init() { c = getContentPane(); c.setLayout(flow); c.add(l_list); c.add(b); l_list.addActionListener(this); } public void actionPerformed(ActionEvent e) { String pick = …

so i now awt is the old version. which is Applet swing is the new version which is JApplet. code at bottom, is it normal to mix awt and swing? for ex i am using continer which is awt. and let say i dont want to mix awt with swing …

Would anyone know what the PNG Include directory variable should be for CMAKE. I can't seem to find a Cmake module to search for PNG in the program which depends on LIBPNG (unlike all it's other dependencies). I've been using PNG_INCLUDE_DIR but CMAKE doesn't seem to recognise it? thanks.

Hi, I am making a program to open the application TextEdit on a mac (not a specific file, just open the program). I have been researching it, but have not come across much help. I have seen that I should use Runtime or Desktop classes, but i'm not sure which …

Pretty self explanatory code. Why doesn't it work! #include <stdio.h> int main() { __asm__("number dw 0"); // declare number? printf("%d",number); __asm__("mov %eax,number" "inc %eax" "mov number,%eax"); printf("%d",number); return 0; } cc ex1.c -o ex1 ex1.c: In function ‘main’: ex1.c:22:17: error: ‘number’ undeclared (first use in this function) ex1.c:22:17: note: each …

Hi Everybody I am trying to create a template class here is the code I trying to just add and multiply 2 number. But I am not able to do so using template class. class calc { public: template <class T> T multiply(T x, T y); T add(T x, T …

Hey guys. i am new to c# and i was wondering if you could give me a hand. it is about sets.So far i have 3 textboxes,one for set a one for b and another for result.i also have 3 buttons one for union one for difference,element found in a …

Ok I know the difference between delete and delete[] BUT this question just all of a sudden popped in my head since "NOTHING" happens when I use delete[] for all purposes. Now I know when to use one or the other but it still for some odd reason bothers me …

Hey guys. I have two questions about my code(which has no errors but isnt giving the output i want)...Is it possible to have an if statement in my 3rd constructor? Also why is my output giving the filepath instead of outputting calcutations? Thanks for having a look public class order …

I'm trying to make a video store program that allows customers to search for videos and either buy or rent them. I have already made a class with 3 subclasses, VHS, DVD and VCD. for the meantime,When video objects are first put into the store, the status should be “IN”. …

How do I set the CMAKE_INCLUDE_PATH? Also... How to I set the CMAKE_LIBRARY_PATH? All i know about CMAKE is that is is a GUI with very limited options. Where do I put these variables and why do I set them? How do I set them? Thanks

I have been using the Jove editor by Jonathan Payne for many years. If You are not familiar with Jove - Jove stands for Jonathans own version of EMACS. I love using it. In the 80s I had my own version of jove with a lot of my own personal …

I was doing xaml with vb coding in vb 2010 I create a datagrid and linked itemssource with table adapter, and also I modify a columns to checkbox datagrid columns. Problem now is I checked the checkbox value in the columns in datagrid but through button check the data grid …

Ok, so I've recently been learning to code in c++, but I'm getting a little confused on how you read files to functions. For instance, say that I have one file with a list of other files in it. The information within the second set of files (each file) contains …

I have searched on the internet for a 'working' double to char* does anyone have any idea? I need to pass the string to a function that takes a char* as an argument.

I am trying to make a program that will check the remaining number of an item left in stock and that will, if someone buys it, subtract the amount of the item bought and then re-write it into the database... (Something like what they use in some stores) How do …

I want to know how exactly to add the button at the top of the search to note as the search criteria is for example asc to desc or vise versa  that is here i need a icon beside the colors to show me when i search weather …

I am trying to insert new records into an Access DB and getting some weird stuff. I get the data from a DBF table and load that into a dataset table and DataGridView with no problems. Then I loop through the ds.table and insert it into the DB with this …

Hi guys, Finally I've registered after being a very long visitor for this awesome community. I have this problem which consumed 2 days of my time trying to figure out how to solve it. And your help is needed guys. The problem says: Transfer elemenents from Stack1 to Stack2 , …

this is my code, from the book *Head First Java* ... class Echo { int count=0; void hello() { System.out.println("Helloooo....."); } } public class EchoTestDrive { public static void main(String[] args) { Echo e1 = new Echo(); Echo e2 = new Echo(); // output 10 //Echo e2 = e1; // …

Hey guys im having this error on my codes but seems to work on the other new projects it always highlight the .ExecuteNonQuery `{"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at …

Write a nested for loop that displays the following outpout: 1 1 2 1 1 2 4 2 1 1 2 4 8 4 2 1 1 2 4 8 16 8 4 2 1 1 2 4 8 16 32 16 8 4 2 1 1 2 4 8 …

Hi, i have a problem making my program share infos with his clone... Let me explain :) I execute my program twice, and i want it to share text like a messenger (on a single computer) and the problem is, i don't want it to be one program with 2 …

I have created a simple client server chat program using socket. I used to run Client program and Server program separately in two eclipse and chat is done through console only. The logic is as below: System1Class (Server) | System2Class (Client) 1) SendThreadSys1 Class | 1) SendThreadSys2 Class 2) ReceivedThreadSys1 …