Software Development Forum

Can anyone help me with this java problem? Here's the problem: "Write some code to demonstrate inheritance polymorphism. Create a superclass class with 3 subclasses. The superclass should have a method that prints out a line identifying the current class (something like "I am a Superhero"). Two of the subclasses …

I want to display my table columns and data in datagridview at run time when user select table name I know that i have to set bindingsourse property . But i dont know how to do programming for that can you tell me.

#define print_int(a) printf("%s : %d\n",#a,(a)) int y=10; print_int(y) i am taking a class and have been asked to explain why this is bad... So i guess stringifing #a is the problem. It does work, so why is it dangerous?

Once again, I'm having trouble on my next assignment for class. This is what I have to do: Read and process a text file one character at a time: 1.) output the file to the screen one character at a time (as a char) as the file is read. 2.) …

In which package is Grid(in-built) class is there? I guess util. But Grid creation using create() shows error.

Hello. I'm not really sure on how to explain the problem, but here goes. I'm creating a Traffic Simulator of a cross junction. I currently have car objects moving, with working traffic lights. I created a variable array for the car class which creates several car objects. Then the lane …

How could I login to HostMonster, then go to the Remote MySQL and add IP address?

When I run the program I get an exception on line 54: Cross-thread operation not valid: Control 'listBoxResult' accessed from a thread other than the thread it was created on. Form: ------------------------------------ [CODE] using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using …

Good morning all, i have a text file contains following data..... sec TID ATTRIBUTE 69013 1-3039-1 REGISTER 69013 1-3039-1 100 69013 1-3039-1 401 69013 1-3039-2 REGISTER 69013 1-3039-2 100 69013 2-3039-1 REGISTER 69013 3-3039-1 REGISTER 69013 4-3039-1 REGISTER 69013 1-3039-2 200 69013 2-3039-1 100 69013 2-3039-1 401 .................. .................. 69023 …

[CODE]/* My problem is I do not understand the following statement in 45. used[minIndex] = [COLOR="Red"]true[/COLOR]; // Record minimum as used boolean array used[] can sort array values[] by minimum when we set "[COLOR="Red"]true[/COLOR]" ? */ // Soln4_4.cpp : main project file. #include "stdafx.h" using namespace System; /* This uses …

Hello everybody! I’m new to C++. Need some help. I am trying to prompt the user to enter the file name. File itself includes list of 5 emails. After user enters the file name, program should check the list of emails and output all emails that have wrong email format …

Hello... I am still a newbie! I have an assignment to write a C++ program to cover a series of ASCII character digits into numbers. Like if the input (that I have ti input from a saved file) was $1,9,56#%34,9 it would output 1956 349 on two seperate lines ignoring …

Hi, Can private static data members of a class be accessed through non-static methods of that class? I'm asking this (dumb) question because on a C++ book I've read that a class's static data members can only be accessed through a static function, but when I tried doing it with …

When converting Roman Numerals, how do I tell the code to consider the fact that the letters are also used for subtraction? Like, X=10 and L=50, but XL is 40 and not 60. How do I do this ( instead of listing all combination )? [code] include <string> using std::string; …

greetings all. this is my first post on these forums so excuse me if i'm not familier with etiquettes! im looking for a way of making my program wait before continuing on to the next line of code. i know a function does exist, it is even one i have …

i have a codelike this: [CODE] do { int i; }while(i!=0); [/CODE] Shows error "Cannot find symbol i"

Hello This is my base [CODE]class BaseClass { // base has no body };[/CODE] and child [CODE]class ChildClass : public BaseClass { public: void testMethod(); };[/CODE] I do [CODE]BaseClass* base = new BaseClass(); ChildClass* c = static_cast<ChildClass*>(base); c->testMethod();[/CODE] Above compile and ChildClass::testMethod() executes fine. my memory is allocated by BaseClass …

hey guys i got this new project for my java class and got the overall idea but my code still does not seem to work ...here are the directions: - make a 5X5 boolean array assign 5 random elements for 5 ships - user can have 15 guesses to find …

A text box show current date(like 24-03-2009). I write in other textbox 3. I want when I write 3 then the textbox (24-03-2009) automatically increase month like 24-06-2009. how it possible?

ok... i know a lot of you are probably tired of me asking questions but i am trying to learn and i am asking about stuff i dont know, not just to get you to do the whole program for me. this question is if there is a list of …

Is there a program where i can launch a website, click on a button or textfield and it will give me the getElementByID? I searched around for this and i have found nothing? Why doesn't this exist? I am writing a program that will enter information into a copiers web …

can someone help me, each time i send my friend a program he says tht the windows goes away once he enters something. please help.

Hi there, I am new to VB.Net, i have cracked my brain to figure out on how to use if else statements in form1 to call button.click from another class. Please help me! :( THANK YOU SO MUCH! I REALLY APPRECIATE IT! :)

Hello, I'm a newbie in VB.Net. I'm creating an application using VB.Net. I have a loggin form which has a username and a password textboxes. I have the following code which is working, which I believe is actually validating the username and password. My hicccup now that I need help …

Can anyone pls help how to dispose objects by my own. i.e i should not allow the garbage collector to dispose my object automatically when object is out of scope, instead it should leave the job of disposing the object to me whenever i need. Thank You all

Hi, I recently set about making a simple application using python with some 3d components, i switched from PyOpenGL, because it was a little bit to complex for what I wanted to do, to VPython, which based on the YouTube video's looks very easy and simple... which is exactly what …

I'm having some problems trying to input records into a relational database. The design is really simple but I'm running into a wall when it comes to having the foreign key from my child table autopopulate the primary key from the parent table. I've made the connections in Access and …

How are iterators used in C# ? suppose I have say: [code] List<int> someList = new List<int>(); /* assume some items are added here */ /* and now I wonder if C++ style iterators are available? */ for( var i = /* iterator begin of list */ ; i != …

I have read about how multicore processing works of the Intel. The manual that I read had left out a part that would of been useful how to actually use multiple cores. It just explained how all the different parts of the CPUs interact with each other, so could someone …

hi there, i have been asking this question every time. [CODE] public bool ValidateTelNo(string TelNo) { bool value = false; string rePhoneNumber = @"[1-9]\d{2}\s?\d{3}\d{4}$"; string PhoneNoFormat = @"\([1-9]\d{2}\)\s?\d{3}\-\d{4}$"; Regex re = new Regex(rePhoneNumber); Regex re1 = new Regex(PhoneNoFormat); if (re.IsMatch(TelNo) || (re1.IsMatch(TelNo))) value = true; else value = false; return …

Hey daniweb forums, Okay so my question is, what is the difference between VC++ (visual C++) and C++ with any other IDE (or none at all). I know for a fact that VC++ is an IDE but according to some people that I have met. They say, stay away from …

I am not looking for an explicit answer to this question, and I have googled/searched this site for hours trying to find an example to work off of. What I can't figure out is how to write a nested "for loop" that will allow the user to input one number …

Hey guys , i haing a problem with using stringstream and atoi . I am trying to conert a string to in integer When using stringstream [CODE] string d = "033116"; int b = 0; stringstream ss (d); ss >> b ; [/CODE] When using atoi [CODE] string d = …

I have this array that should be returning a value in the 50's due to the data input i am giving it but it is returning 0 everytime What the code should do is input to and array from the file then pass it to the array monthSum then it …

Hell can you help me on this,how can i insert a new node in the binary tree and to keep track the current node example: input number: 50 Succesfully inserted! input number:40 this will print "inserted at the left of 50" input numbr: 80 this will print "inserted at the …

I have been looking into an internship through Google, i have a good basic background, but I need more knowledge, I read C++ Primer Plus 5th Edition and got a good background from it. Where can I continue to expand my knowledge? I am trying to nail a phone interview …

I've been given an assignment as follows and I'm having trouble getting it to work properly, hoping if anyone out there can lend word on how to get it running? "A bank account starts out with $10,000. Interest is compounded monthly at 6% per year (0.5% per month). Every month, …

Okay here's what I have... it's a start. My only problem is when I run the program the sequence does not print the first 1 in the 1, 1, 2, 3, 5, 8,... it will only print 1, 2, 3, 5, 8,... I believe it has something to do with …

I am a beginner JAVA coder, and yes this is a homework assignment for a online class... I am stumped, and cannot get help fast enough when it is 11pm at night :<) To better explain, I need to be able to have four methods. My first method contains all …

I am coding a web spider for research purposes and have run into an error I am uncertain about. I am fairly new to web programming and need a bit of guidance. I use http.client to get a connection, request a site, get the response, and read the resonse into …

I am trying to write this program to get a user inputed number of grades up to 15. I then need to add the grades, find the largest, smallest and average of the grades, and finally display the results. Here is what I have so far. I can get past …

Hey, I have a question. I was writing a custom Array type class. In my template declaration I use the type name as DataType. I was making an attempt at creating an insert method, which takes a DataType argument and the index to insert at. I originally had this code: …

im having this problem when i try to add [CODE] m + 1 = k;[/CODE] it says this- *lvalue required as left operand of assignment* in my compiler, please help. dont mind the unfinished code. [CODE]#include <iostream> using namespace std; int main() { double b, m, k; string x; b …

The monthly payment on a loan can be calculated using the following formula: amount * R monthly payment = -------------------- -N 1 - (1 + R ) where: amount is the amount of money borrowed R is the monthly rate of interest for the loan N is the number of …

Hey I have a question.. I have a list in one form that looks like this: [column1] - [column2] item1 - 0 item2 - 6 item3- 8 item4 - 5 item5 - 2 soo.. now I open a new form and I need to select what kind of items I …

Hey guys, Here's my problem: I've been following [URL="http://www.zeuscmd.com/tutorials/opengl/03-OpenGLWindow.php"]ZeusCMD tutorials on OpenGL[/URL], and when I tried compiling [ICODE]main.cpp[/ICODE], I get an initializer error. I am not sure what caused it, since it seems exactly the same as the example. I linked all libraries it tells me to (-lglu32 -lopengl32). I'm …

Please let me know if I should make something more clear 1. Each item in list contains a tuple with its name -> ((value, work), 'name') 2. the function "sort" below sorts the list of subjects by "value" in descending order 3. I get: TypeError: 'int' object is unsubscriptable (occurs …

hello every one..I'm IT student i do understand it's logic and algorithm but I'm having hard time in programming.. I do hve weak foundation in Programming..can i ask help from u for my assignment? Problem: Write a program that reads student scores, gets the best score, and then assigns grades …

Hi, I'm writing a scientific application that has to store a large (1GB to 500GB+) amount of data on a hard drive, and then, once written, read it back sequentially to process it. The amount of data for a particular experiment is known in advance, exact to the byte. When …

so I have and for loop to find the highest number in and array how would i go about outputting the element number? [CODE]//compares the values in the yearAverage array to find the highest temperature for(int i=0; i<lineCount; i++) { if(yearAverage[i]>=highTemp) { highTemp = yearAverage[i]; } }[/CODE]