Software Development Forum

Thanks in advance for your help. Ok...the last part of this program is where I am stuck. I am supposed to read data in from a file and sort by gender. But the output is supposed to read department, gender, first, last names, job title and salary -- then to …

Hi all, I have been reading on the net searching for what others alternatives do i have besides singleton and i came across the following site:- [URL="http://www.bigroom.co.uk/blog/better-without-singletons"]http://www.bigroom.co.uk/blog/better-without-singletons[/URL] There is a paragraph stating:- [B]To accomplish this(singleton effect), create the class as a normal, non-singleton, class and enforce the single-instance only behaviour …

Does anyone know of any open source libraries that provide a simple grid (2d matrix) structure- for simple game navigation? I am running into a lot of problems with the one I created for my ai project and it would be nice to have something reliable to work with. Thanks!

Hi everyone, I'm trying to create a simple Java game, The Last Space Invader, where you control the last space invader and the tank automatically tracks and shoots at you. The code for my invader is as follows: [CODE]import javax.swing.*; import java.awt.*; import java.io.*; import javax.imageio.*; import java.awt.event.*; public class …

can anyone help me with this program write in c++ a defintion of a complex class for complex numbers.Each object of this class will represent a complex number x+y*j storing the real part x and the imaginary part y as float in private section. Include a constructor, a destructor, access …

hi guys.. i implemented a stopwatch and as i run my software, the stopwatch starts. what i want is to implement a method to start the stopwatch and another method to stop the stopwatch. can u give me an example of this please? thanks..

hi, would someone please point out what is wrong with my ActionListener setup? [code] // in my menu class, parse JScrollPane and JTable to the showTable constructor in the ShowTable Class showTableMItem.addActionListener(new ShowTable(scrollPane, table)); [/code] [code] /* * set local JScrollerPane and JTable to be the JScrollPane and JTable from …

Hello guys, I want to know if its possible to use the same socket to transfer two things at the same time. [code] // set up input stream for objects input = new BufferedReader(new InputStreamReader(clientsoc.getInputStream())); // set up output stream for objects output = new PrintWriter(new OutputStreamWriter(clientsoc.getOutputStream())); output.println(nickName + " …

I'm struggling on how to do this. For example. [code] for i in range (1 ,100): if i % 3 == 2: print i, " mod ", 3, "= 2"[/code] i think i need to understand what this does more. Firstly what does % mean? [B]if i is the square …

wow it's me again! i have: [code] i=0 while i<11: print i, print '' i=i+1[/code] this gives the answer: 0 1 2 3 4 5 6 7 8 9 10 i need to give the answer. * * * * * * * * * * * * * * …

hi. I get a NillpointerException. Here's my code: [CODE] private void Login_ButtonMouseClicked(java.awt.event.MouseEvent evt) { String usrname = uname_TextField.getText(); String pass = passwd_PasswordField.getText(); String pwrd = pass.toString(); String args[] = null; boolean auth_flag = false; try{ R = S.executeQuery("select uname, passwrd from Employee_Master;"); while(R.next()){ if(usrname.equals(R.getString("uname"))){ if(pwrd.equals(R.getString("passwrd"))){ this.dispose(); [B]args[0] = R.getString("uname")[/B]//causing nullpointerexception …

hii i am new learner of java.. I just want to know that it is necessary to declare a default constructor if we are declaring parameterised constructor..

Hello friends, Got a new question, can someone explain to me how to put an HTML link in my Java program. Example ... "Click here to visit the developer website". So when someone will click on the link, the web page should automatically open in the browser. I searched on …

Why am i getting a segmentation fault when i try to compile this code? [CODE=c++]#include <iostream> using namespace std; int main() { bool x; string odgovori; cin>>odgovori; int xd[2], rez=0, vkupno=0, odlen=odgovori.length(); xd[1]=1; for(int i=0; i<odlen; i++) { if(odgovori[i]=='O') { if((xd[1]==1)&&(x==false)) { rez=rez+1; x=true; } else{ xd[2]=xd[1]*2; rez=rez+xd[2]; xd[1]=xd[2]; } …

How good this code in terms of clarity, readability, and overall design? Easy to understand them or not? Note: i put system("pause") which is not recommended. cin.get() is a better one in case you didn't know. [B]First: Port Scanner[/B] [CODE]/**program description: * * this is a simple port scanner * …

Hi guys! I've worked so hard on this really long program. I think I'll just post the relevant subprograms. I hope it's still easy to understand. This is just before the main function. [code] #include <iostream> #include <iomanip> #include <conio.h> #include <string> using namespace std; //function prototypes int cashier(); //generates …

hello, quick question regarding template classes and pointers. I'm making a linked list kind of container system, and I'm running into trouble with it when I (don't know if the terminology is 100% correct here) declare an instance of it. An example would be best to explain what's happening: I …

So im using this code to start a thread... [code=cplusplus] namespace Monitor4vc { public ref class Stats { public: Stats() { } ~Stats(){} void set(int prid, String ^url, String ^pst, String ^pth){ pid=prid; httpUrl=url; post=pst; path=pth; } void start(){ thread=_beginthread(OpenProc,0,NULL);//Error } private: ArrayList playing; ArrayList quitp; HANDLE thread; int pid; …

Hi all; i have some problem with my code.. I want to read txt file which include : rectangle 0 0 1 1 orange rectangle 0 1 1 1 green rectangle 0 2 1 1 white rectangle 0 3 1 1 orange rectangle 0 4 1 1 white rectangle 0 …

Hey i have a weird problem when im trying to print out elements in my temp pointer array, at the bottom where im just using cout to print random indexs of temp, it will only work if i comment out temp[1]... anyone have any idea why? if its not commented …

My exposure to arrays and pointers are bit limited. And concatened strings even less ( it was not covered in my class so I had to google it. ) So I know there are errors. I can not use any of C string libary functions. Thoughts? [code=c] #include <stdio.h> char …

how can i create 50 apples at different positions on screen without having to each time call the constructor 50 times? [icode] import Tkinter as tk from Tkinter import * import time class Apple(object): def __init__(self, a,b,c,d): self.rect = canvas.create_oval(a,b,c,d) root=tk.Tk() canvas = tk.Canvas(root, width=300, height=300, bg="#FFFFFF") canvas.pack() for x …

Hello, I have a question, when does a global variable get destructed? ex. [code=c++]#include <iostream> using namespace std; class simple { public: int *i; simple(int ni){ i = new int(ni); } ~simple(){ delete i; } } simple simple1(10); //for simplicity no command line int main(){ cout<<*(simple.i) } [/code] when will …

Right now i am using the method where i put the picture in a picbox, then save it as a .bmp then use SystemParametersInfo function to set the picture. I do not like this because of one main reason: it takes huge amount of ram for a simple program such …

Hi all, what is the bug in the following code: [code=cplusplus] #include <iostream> #include <string> int main() { string str = "Hello World!" cout << str << endl; cout << float x = 5.0f * str << endl; int 65Num = 65; cout << "65Num = " << 65Num << …

i have my program doing what i want it to do untill it gets close to the end. the ouput that is transferred to the word document is not right. i have random charactes appearing before the "Date:". how can i fix this minor problem?? Thanks [code=cplusplus] #include <iostream> #include …

Hi, I'm pretty new to java and I'm not asking for anyone to do any coding for me. I just need pointing in the right direction. How do I go about printing out the objects of an array sorted alphabetically by name without altering the original array. I know I …

i have to do a java program to perform polynomial operations. i can manage those operations part. but i have a problem when storing the terms of the polynomial in to a linked list. for example when it is given polynomial("4 2 5 3 6 0"); // 4x^2+5x^3+6 may be …

Hi I am beginning to learn wxPython a little with the "wxPython in Action" book but I haven't managed to figure out this one thing I really want to do and am hoping someone can help me. I want to do something like create an Ellipse to which I can …

Is this the best datatype to use for doing calculations for extremely large numbers such as computing pi . Or am I going to need to create my own algorithm for handling extremely large numbers? how does software like superpi handle such a large number, im assuming its all split …

Hi all, I am quite confused about the usage of both. Both of them seems to enable a variable to be shared consistently between classes. Is the following true? [B]Namespace[/B]-used for defining some constant values that you want to share in your application. [B]Static variable[/B]-used to maintain a consistent value …

Hi, so my problem is that when I write a program, and then try to debug it, there comes a error, on VC++ 6.0 there is "Cannot execute program" And in VC++ 2008 express edition it says, that there ain't the file I'm trying to debug. Here's the output; 1>------ …

1. [code] #include<stdio.h> int main() { int function(int); int t=function(1); printf("\tt=%d",t); t=function(2); printf("\tt=%d",t); t=function(3); printf("\tt=%d",t); return 0; } int function (int a) { int t; t = a<<2 + a; return t; } [/code] the output is t=8 t=32 t=96 i am not able to figure out why this is …

Hello I have just started learning programming & this problem is really stumping me. I have to do a syracuse sequence (explained below) & I know my code below is very wrong, (it needs to use for statements in there) but can you give me any advice on what to …

I have a clarification, with my project I added a dataset ,is having dataset [xsd] file name- DataSet1 and datatable table name -datatable1, also it's having the fields "id,item" with my form I have coding Dim ds As New DataSet1 Dim t As DataTable = ds.Tables.Add("datatable2") t.Columns.Add("id", Type.GetType("System.Int32")) t.Columns.Add("Item", Type.GetType("System.String")) …

Hello, I've written couple of overloaded operators in my file containing Set declarations. I want to use these operators within the declaration file. However it seems it isn't used. Instead it uses the standard operators. e.g. i have two overloaded operators say <= and == [code=cpp] bool Set::operator<=(const Set& b) …

Hello and first sorry for my very bad english. i have little knowledge about c and c++ but im trying to learn win32 programming with c++. its little hard and im very new at that. im trying to do very very simple thing: i have an main window, 1 button, …

Hi I am using eclipse.I got error.I am using g++ complier. *.o : file not recognized: File format not recognized collect2: ld returned 1 exit status Please any one help me..[B][/B]

Hello everyone, please i need your help very urgently. I am working on a data management application and am using the data control and the standard report system. The following is an example of data collected. Name Age Birthday ( Day/Month) , Gender Samuel 23 2/5 Male John 22 3/5 …

hi guys, i have a pocket pc application where i scan some barcodes, i want to stop scanning when i open a new form. do you have any ideas how to stop it?

Please can someone help me out on an issue that I ma having with delphi. Aim is to read an INI file then take certain values only and display them under listbox or memo. Lets say for an example my ini files looks like this [setup] Device = Sector= [set] …

i was wondering if it would be possible to use a timer in pascal. like for instance you have 10 seconds to answer a question. iv been thinking and i cant figure out how to do it. does anyone know how?

hi guys,, i've this homework that i have to submit tomorrow.. and unluckily I didn't know how to do it.. it says : Write a program that outputs "Al Eid Song" words.. "The five days of Al Eid" Use a [B]switch statement [/B]to display the following output for the 5 …

I wrote a program which will send a message to multiple clients(i.e, broadcasting) that are connected to a server.Once when the client receives a message from the server ,the client should read a file in the server and display it in the client.The client which responds (i.e, client wants all …

my program won't even run so i must have missed something drastically but i don't see it.... anyway, Create a class called Factor that has a public method called calculateFactor. The method has two two arguments of type integer and checks whether the smaller of the two integers is a …

All questions involve this portion of a program: [CODE] if (y>x and y<z)or(y<x and y>z): print("You have entered Condition 1") elif not(x!=y and y!=z): print ("You have entered Condition 2") else: print ("You have entered Condition 3")[/CODE] 1. If x = 10 and y = 10, what is the value …

Write a program that reads in an array of type int. Provide facility to either read this array from the key board or from a file, at the user's option. If the user chooses file input, the program should request a file name. You may assume that there are fewer …

Im having a problem with the while loop in my code, if I change what X2 is being compared to to anything other than 0 it doesnt hit the while loop, I am hoping its just some weird mistake. Thanks in advance for any help. [CODE] X2 = 0.5; while …

[CODE]public abstract class CircleShape { public double radius; public CircleShape(){} public CircleShape(double radius) { this.radius=radius; } public void setradius(double radius){ this.radius=radius; } public String toString() { return "radius"+ radius; } abstract String getDisplayText(); } [/CODE] [CODE]public class circle extends CircleShape{ private double area; public double area() { return radius*radius*3.14; } …

I am going to make OS. And I need help with GUI...how to make an GUI ?...I am not on Windows so CreateWindowEx() doesn't exist.