Software Development Forum

Write a program to read the coefficients of a series of quadratic equations from a text file and print the associated roots, or appropriate errors if there are no real roots, to another text file. If a == 0, no solution, and if (b2-4ac) < 0 it has only complex …

I was reading through some C++ code, and I noticed if(;;). I've tried to Google it and even search on here, but it seems to ignore the brackets in searches. Obviously I know what an if statement is, but what do the ;; mean inside the brackets? EDIT: nevermind, as …

Should I be using std::wstring or std::string and wchar_t or char? All this unicode stuff is confusing me. I want my application to work on both windows and linux without too many problems and changes but I'm considering unicode vs. ansi. Any ideas? I ask because I see many applications …

Dear All I am using Vb.net to update a database running on SQL Server. I am using the following to increase the value of the NextPlan in the SystemControl table in a SQL database. Command.CommandText = "UPDATE SystemControl SET NextPlan = NextPlan + 1" Command.ExecuteNonQuery() Once the Command is executed …

I need a textBox that accepts only numerical values ranging from 1 to 10 for my application. Can you assist me please? Take a look at my code (it only does half the job since text inserted from the clipboard using the standard right-click menu strip of the textBox will …

I am trying to add a custom widget dynamically, multiple times. However, the widgets just stack up in the same place. I have tried several combinations of Layout() and Fit() and setSizerAndFit() after adding custom widget to the sizer Thank you for any help #!/usr/bin/env python # -*- coding: US-ASCII …

num_trades = int(input("Number of trades for today?")) for i in range(1, num_trades + 1): action = input("Trade number", i ,"(buy/sell)?") num_shares = int(input("Number of shares to buy?")) price_per_share = float(input("Price per share?")) I'm getting a TypeError on the line "action = input("Trade number", i ,"(buy/sell)?")" Help Thanks

what is "System.Uri"????

Hi, I see a change in the font with string created by graphic2D from other labels. Is it possible to obtain a uniform font? package com.HIPS.biosynML; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Insets; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.font.FontRenderContext; import java.awt.font.LineBreakMeasurer; …

I have an integer dataframe and in my code I am doing some length calculation( which can be only perfomred on string), therefore I need to convert my dataframe to String. I have tried using str(), its not helping me, it would be helpful if you could suggest something.

I've been working on a small API/Library and I realized that I was returning memory that wasn't going to be consistently put on the heap or stack. So my question is this: when I return an object from a function in a Library, should that object be on the heap? …

Hello, well I'm doing a rational class and i'm having trouble with the subtraction part. I have done add, multiply, and division correctly. Therefore, I would like a little help on subtraction, and i'm set. public class Rational { // TODO Auto-generated method stub //Data members private int numerator; private …

first hi,i'm 19 yeesold,not a native english speaker :(),right now i'm so exited for learning programming i already know some html5 and css3 and willing to take it deep with java script my first question is what is the difference between java and JavaScript and where each one is used. …

Hi, I would like to to to store the Name and Items of ComboBox into dictionary. With the below code,I am able to store them. However, Name of ComboBox is as counting ComboBox10 to ComboBox1n. I would like to store Name of ComboBox as ComboBox1,ComboBox2 rather than ComboBox10 to ComboBox1n …

current code: Response.Redirect("DeviceInformation.aspx?arg=" + e.CommandArgument); which redirects to a page with a data grid. The argument is passed into a stored proc on a database and the infor is returned in a grid. What i want, is the same thing, but, open it in a new page. So something like: …

I saw this code on stack overflow def writeProfile(profileName, profileData): """ pickle user profile data """ os.chdir(PROFILE_DIR) fileName = profileName + ".dat" f = open(fileName, "wb") pickle.dump(profileData, f) f.close() os.chdir("..") It is for saving progress under the pickle module. I don't see a way to save variables. How would I …

Hi I'm trying to create an array of function pointers contained within a class, the C++11 way. Can I have some help with this as I'm getting a bit mixed up. Here's what I have done so far. They are made up classes to define the problem. #include <iostream> #include …

I taking data from 3 tables to crystal report.Tables are 1.Moblization -primary key is Fen_Inovoice_No 2.invovoice details -Primary keys are Fen_Inovoice_No and description 3.Client details-primary key is Contract name I 'm using this query to retrive data Dim cryRpt As New ReportDocument CrystalReportViewer1.SelectionFormula = "{Mobilization.Fen_Inovoice_No}= '" & Varibles.invoice1 & "'" …

Hi All, I am having a JTable which runs so strange. Jtable is very basic having three rows and three columns. If I use SetValue method to place data in any cell and run the program JTable is not visible. If i delete the SetValue Method from the program and …

/*Hi, I was trying to optimize my application in C. In that process to reduce the complexity at condition checks which of the below is efficient,*/ if(bFlag1 && !(Var == 1) && bFlag2) //or if(bFlag1 & !(Var == 1) & bFlag2)

I'm having a problem where i am making a simple combo box program that when it runs shows a pic, you can have a drop down box to select a different pic, very simple. I have an array for the file name of each, and a second array to store …

Which of these is the best practice for executable Linux scripts: #! usr/bin/env python #! usr/bin/python #! usr/bin/env python3 #! usr/bin/python3 All four of them work just fine on my system, so I'm looking for the best practice. Thanks.

This code: def reverse(x): for i in range(len(x)): y[i] = x[-(i+1)] return y a = [1, 2, 3, 4, 5] b = reverse(a) returns a "global variable 'y' not defined" error. WHAT GLOBAL VARIABLE????? If I add 'y = []' anywhere in the code, either inside the function or outside …

I had a function all by itself in the file [filename].py, and the file was properly executable. This is how people advised me to call it externally: import func func.[filename]() But I was getting errors all over the place. So I contacted Python help and they told me something different, …

First of all, yes this is a homework question however I am not asking you to do it for me I just need something clarified :) My homework is create a truth table for: Q = NOT (X OR Y) AND Z Now, is the 'AND Z' also included in …

can any1 explain me how the values r being stored and how union and intersection is takin place please explain me in detail what is happening in program d program is on union and interscetion of graphs pls help me out i m unable 2 understand d program #include<stdio.h> #include<conio.h> …

Hi, I want to replace all the character in my string with 'aaaa' as many number of times as there are occurence of the character. For eg. if my string is "cat", output should be "aaa" and if its "hello" output should be "aaaaa". As of now, I am using …

Hello guys: I am certain if I was not trying slef-teaching C++, that this question would have been answer before. What is the use of [inlinecode]using namespace std;[/inlinecode] ? I am not certain, I just know that when I use [inlinecode]#include<iostream>[/inlinecode] I have to appended. Simple question, but a matter …

Hi, I'm new to python so I'm asking a noob question. I'm given a large string from which I have to take all the digits and check if its prime or not. Then I have to take the first 25 chars of the string and append the prime digits to …

Hi, I have a list which contains strings in each value. I want the word count of each string and then I will have to find out the string with minimum word count and max. word count in that list. Help is much appreciated.

Am developing a software for submission as project. As a part of it, am planning to create a Phonebook package. I created a database in access and i integrated it in VB.Net. Information: Database name : Contacts.accdb DataTable : Contacts Contents in table : First Name,Last Name, Phone, Address... Platform …

Hi guys. I just need help with something. Bascailly I've got a combobox which has all the colors e.g. color.black, color.blue etc and what I want to do is when the user selects the combobox item e.g. selected color.Blue it should change the labels forecolor to what ever the user …

I have to tables 1.[Mobilization]-Primary key is [Fen_Inovoice_No] it is the forgien key is of [invovoice details] 2.[invovoice details] the primary keys are [Fen_Inovoice_No],[Item] when I tried to view the data , the all data are not loading to listview why is that? Dim intResponse As Integer intResponse = MsgBox("Please …

I have been trying to implement a partially Dynamically generated GUI but an having trouble with the layout not rendering properly. Simply resizing the window corrects the issue. Here is the problimatic generation code: public void setupBookTabs() { ArrayList<String> bookTabNames = Record.getBookGroups(); for (int i = 0; i < bookTabNames.size(); …

I have pretty much finished my program I'm writing. It's a program that fixes my issue with Firefox (It never deletes the saved sessions). I have the program minimize to the notification area, however, here's my dilemma: The way I'm doing it is by cancelling the formclosing event and instead …

Okay, so cryptography is insanely well developed and I'm not doing anything new here, but I still thought I'd monkey around with a cryptography project. Here's what I want it to do: 1) generate an encryption and decryption key that is randomly between 20 and 40 digits long and contains …

CSCI-15 Assignment #1 — Functions and files review (40 points), due September 9, 2013. Write a program to read the coefficients of a series of quadratic equations from a text file and print the associated roots, or appropriate errors if there are no real roots, to another text file. The …

Here is a program I've been working on. When it runs I get no errors, but it is still not doing quite what I need it to do. For the lines like "Console.WriteLine("{0} - Avg - {1} {2} {3} {4} {5} {6} {7} {8} {9} {10}", players[0], stats[0, 2, 0], …

I am mainly into system dev, writing kernels and kinda just building everything from the ground up... But I also like game dev and is interisted in the whole concept. So I am going to make this easy, seing as a lot of things can change the output. A programmer …

I just started to learn java, and the first program I have to create is called PizzaRun, here is description: PizzaRun is a simple program that calculates the number of pizzas to buy based on the sum of the slices entered on the command line arguments after the first argument, …

CSCI-15 Assignment #1 — Functions and files review (40 points), due September 9, 2013. Write a program to read the coefficients of a series of quadratic equations from a text file and print the associated roots, or appropriate errors if there are no real roots, to another text file. The …

So, I've been through a class in java so I know a little bit of what I'm doing... The assignment I have is to create a program that takes a string and converts the letters four away in the alphabet (ie: a becomes e and so forth). I've gotten most …

Suppose you have this file named func.py: def func(x): y = raw_input(x) return y func(z) And then you have this calling code: z = raw_input('Type a request for input and hit enter: ') omega = execfile('func.py') print(omega) Why does the output always end up being "None?"

Hello everyone.. Would anyone know why I can't do the below. I'm not the best programmer in the world so I'm wondering why the below won't work. I get an error 'A template declaration cannot appear in block scope' No doubt it's due to my lack of understanding of the …

Write a Java program that generates and displays 100 random integers in the range of [10, 25] inclusively. The program then displays the number of occurrences for each number in that range. Next, the program displays the maximum, minimum and average (with exactly 2 digits after the decimal) value of …

I have introduced an algebra for a new memory model. Now I need to implement this using Java. Basic step of my program is: Once we need to execute an application program (exe file), My program should accept that and classify it according to its functioning. do you have any …

CSCI-15 Assignment #1 — Functions and files review (40 points), due September 9, 2013. Write a program to read the coefficients of a series of quadratic equations from a text file and print the associated roots, or appropriate errors if there are no real roots, to another text file. The …

class stdout(object): def __init__(self,realout,prefix): self.file = realout self.at_start_of_line = True self.prefix=prefix def write(self, text): if len(text): if self.at_start_of_line: text = self.prefix + text self.file.write(text) self.at_start_of_line = (text[-1] == '\n') sys.stdout=stdout(sys.stdout,"OUT ["+f+"]> ") File "C:\Users\James\Desktop\run.py", line 13, in write self.file.write(text) File "C:\Users\James\Desktop\run.py", line 10, in write if self.at_start_of_line: AttributeError: 'stdout' object …

can any1 tell me the logic of writing prog for union,intersection and ring sum of a graph and also pls tell me the symbols dat are used in progs

Dear friends, I have a set of values as follows (filename is string; values are floating; notimportant... is self-explaining): filenameA, value1_1, value2_1, value3, value4, notimportant filenameA, value1_2, value2_2, value3, value4, notimportant filenameA, value1_3, value2_3, value3, value4, notimportant filenameA, value1_5, value2_5, value3, value4, notimportant filenameA, value1_7, value2_7, value3, value4, notimportant ... …