Software Development Forum

There is a sample program in my C++ book that uses the += operator, and doesn't explain how it works: [CODE]gold += silver / SILVERPERGOLD;[/CODE] What exactly does this mean?

Hey. I've got a programme that processes the files in a given directory. However, it can only run those files if the programme itself is saved in the same directory. The error i am experiencing now is that once my programme runs, it also generates a class file which also …

I've got to:4. Write a program that asks the user for two strings. The program should then compare the strings and display a message saying whether they are equal or if not, and which one is first alphabetically. For some reason it doesn't print out the parts in the if …

An exercise in Stroupstrup's book is to write a program involving memory allocation with an infinite loop and let it run until it crashes. He says the crash will be due to [i]memory exhaustion[/i]. He also suggests researching the topic. I did and am frightened by what I found. The …

HI, I'm getting the object refernce not set to an instance of an object error in the code below. I couldnt figure it out, where I'm going wrong. Please help. [CODE] Public Function GetConnection() As SqlConnection Dim connectionString As New SqlConnection() Dim Conn As String = Nothing Conn = ConfigurationManager.ConnectionStrings("connectionString").ConnectionString …

Ok, I am having two issues with this program, and since I am new to the forum, yes, I am a beginner so I am sure the error is so common it makes you want to cry seeing it again, haha. Anyway, the program is supposed to keep working with …

First of all, hello everybody :) I'm startint to learn Python and i have question about keyboard input. e.g. I want to enter grades (e.g. 10, 4, 4, 2) and calculate average. So i guess it should be: [CODE]grades = raw_input("Enter grades:") print "Grades:", grades[/CODE] And finaly - question.. How …

I need help with this stack problem. I think I got it, but I dont. Basically its a program to figure out who will be eaten by the dragon from a village. Names, and <CHOMPED> will be in the "villagers-in.txt" file. Every line of the file is supposed to be …

Hi, I'm working on searching error files based on time. I have 2 folders which have permanent and temporary error files in it, and the only difference between permanent and temporary error files is creation time. I’m searching for error files in these 2 folders and my search should only …

Hi friends, I'm new to this community. i just want to read string from a file excluding punctuations like ',' ';' or newline character. Is there any way to read the string by specifying the terminate character.

Hi I am implementing a function that check if user is a man or woman. But it does not worl properly. I press e for example and appears two times Please press m/M for Man w/W for Also sometimes w/W/m/M are not recognised and appears the above. My cose is …

There is a list of dataset and I need to reshuffle them randomly then partition the dataset into n groups. I am using dictionary to store the list of dataset, but I am not sure how to partition items of a dictionary into n groups? What I can think of …

Hi, Can anyone help me on the requirements below? I dont have any idea on an inventory system...please help!!!! Objective Create an inventory system that allows records of company inputs and outputs, tht's viewable through daily, weekly, monthly, yearly report as well as online control over items. Aim To simplify …

I have this tow errors ,how I can solve it.any ideas? error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup MSVCRTD.lib AC fatal error LNK1120: 1 unresolved externals Debug\AC.exe AC

This is an assignment I am working on for uni and I have done quite alot by myself and with some hints along the way from others who know Java better than I do. So I am working on a GUI Traffic Simulator (creating the GUI and drawing it is …

[CODE]void Students_Absence_Report() { int i; double presence[NO_OF_STUDS], absence[NO_OF_STUDS]; for(i=0; i<NO_OF_STUDS; i++) { presence[i] = ((double)student[i].presentDays/14)*100; absence[i] = 100 - presence[i]; } printf("\n\nStudents Presence/Absence Report\n"); printf("--------------------------------\n"); printf(" Name\t\t%%Presence\t%%Absence\n"); for(i=0; i<NO_OF_STUDS; i++) { printf("%-3d %-19s %.2f\t\t%.2f\n", student[i].studNo, strcat(student[i].surname, student[i].givenName), presence[i], absence[i]); } printf("\n******** END OF ATTENDANCE REPORT ********\n"); } [/CODE] Anythings wrong …

I just found this tough question in the last year Q Paper of this exam...I dont know how to take that type of input,leave alone the logic...Can any1 help me with this program, plz... : [B] Question 1 Vogon zoo On the icy planet Zorg, the Vogons are putting together …

Hey There all you clever people. Its Ruan here. I am using vb 2010, and i really would like to Just open, not modify a word document. Now i have browsed the internet, and this is what i have found.. in project menu>refferences> select .. microsoft word 9.0 object library …

What do the numbers tell me, in terms of frequency, amplitude and maybe time? Thank you muchly! drue

Hi there, Can anyone tell me how to change my win32 programs icon (top left). I'm running MSV C++ Express 2010, so i don't have MFC. Theres a few tutorials on how to do this but using resource files? Which apparently MSV doesn't support. I want to be able to …

i have button add and the coding, but everytime 1 click the button, a messagebox said that syntax error INSERT INTO. all database column name and the textbox name is true. i checked many times. this is my code [CODE] Try 'add data inside the database con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data …

hi, how do i format the currency value. i have used [COLOR="Red"]Format(GrandTotal, "0.00") [/COLOR] but i still got output like this [COLOR="Red"]60917.3972[/COLOR]. How can i make it to 60917.40

1>------ Build started: Project: allegro, Configuration: Release Win32 ------ 1> allegro.cpp 1>MSVCRT.lib(crtexe.obj) : error LNK2001: unresolved external symbol _main 1>c:\users\lenovo\documents\visual studio 2010\Projects\allegro\Release\allegro.exe : fatal error LNK1120: 1 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Okay, so, here's the assignment that I have to complete: Write a program that will input two vectors of information. Each vector will contain exactly 8 floating point values. Your program will enter these values from standard input. Once the values have been read in, your program should call a …

The practical exercise for this session will be to create a cash register program that you input the cost of an item, the number purchased and if a sales tax applies to the item. If a tax does apply to the item, the tax value will be ten percent of …

Hi, I have a listbox that is bound to a textblock as target and also has an xml file as source. My problem now is the correct syntax for inserting another listbox in between the listbox and the xml file. My code is shown below... <Window x:Class="newTestApp.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" …

I am trying to make a reference program that you can use to access any element of the periodic table based on its name, symbol, atomic number, or atomic mass. It is more than one file, and I need a way to return to main if the user wants to. …

In the MDI main form I am loading one child form (i.e Login Form)at the center of the MDI form. I want without closing the child form(Login form)no one can access the MDI main form.. After login only the login page should close and MDI form should enable true.. Before …

Okay, I've just started learning C++ and I'm on the third chapter of my book which deals with control statements. Basically, I've learned how to create very basic text based games. [CODE] #include <iostream> #include <string> int main (void) { using std::cout; using std::cin; using std::string; string options = ""; …

Hello all. I'm having a bit of trouble trying to figure out how to access data I input into a ctypes array object. This is used with a hardware SDK, so I can't really change the data format at all. Here's the code: [CODE] from ctypes import * MsgDataType = …

I've been trying to make something where I can just plug-in a new implementation (for things like opening a window, displaying graphics, etc.) and it work just like before. I've added a couple of other things like a resource manager, but now I'm getting linker errors. This didn't happen until …

Hey guys, I'm wondering if you can help me out on my problem. I wrote this code to print out consecutive numbers till it reach the maximum number entered. The code works but I want to control the output. Here's my code so far... [CODE] cout << "Enter max number: …

I basically want to map out folders and subfolders in a dictionary and i have this code ive written, but instead of adding each filename to the dictionary it overwrites it each time. Any suggestions? [CODE]for fname in os.listdir(os.getcwd()): print fname x += 1 maincat = {fname} print "x = …

im quite new to python so forgive my stupidity. ive downloaded numpy and here are a few things i understand regarding images and numpy 1.images are made up of pixels that have coordinates, a 2d array i believe 2.numpy has the ability to handle arrays and split them what i …

I want to compare two float values in shell script, i.e. a = 0.1 b = 0.4 if ( $a < $b )then expression1.. expression2.. expression3.. fi if ( $a > 0.0 ) then expression4.. expression5.. fi could you please suggest me how to implement in shell script ?

I cannot figure out what I'm doing wrong in the following code: [CODE]char* charArray[3]; strcpy(charArray[0],"wn"); strcpy(charArray[1],"chair"); strcpy(charArray[2],"-over");[/CODE] Thanks a lot for the help!

Ok so this code works great with an if else statement but i dont why when i change the showMenu to a switch statement you cannot see my print out statement as a menu!? Iv tried different ways of writing the print outs and they havent worked at all. Also …

Hey guys, is there any alternative methods to string slicing? An example output would be: input: dani output: d da dan dani I did this with string slicing, but am wondering if it is possible to do the same thing without slicing. Anyone help out? Testie,

Hi there, I am having some syntax and logical implementation problems with a really very simple requirment and I am hopeing someone can help point me in the right direction. The problem I am having concrens trignometric functions in 3d space and what I am trying to do is find …

pleas will any one help me i feel im going to explode more than 8 hours in this question and i have to submit it after 3hours.. my prog is not finished yet but an error saying unresolved external sympol... actually i have aprog that define the mistake(MSDN library for …

hello everybody.. here is my Assignment Code.. [CODE]#include <stdio.h> #include <windows.h> int Attendance[50][50] = {0}; int studPresence[] = {0}, weekPresence[] = {0}; int i, x; int week, student; char SubCode[30]; void InputFunction(); void WeekAttendance(); void StudentAttendance(); void main() { int answer; while(answer != 4 || answer > 4 || answer …

Hi! I have a problem with the array of JTextField components. So, the code is shown below and it can be successfully compiled: [CODE] txtAdminTextFields = new JTextField[nrOfCols]; ... tableAttributes.getColumnModel().addColumnModelListener(new TableColumnModelListener() { public void columnMarginChanged(ChangeEvent e) { for (int i=0; i < nrOfColsFin; i++) { txtAdminTextFields[i] = new JTextField(); txtAdminTextFields[i].setPreferredSize(new …

What the title says. Basically, I have some code with 12 nested loops based on the code below, and may have to bump it up to 24. This works fine, but seems a little cumbersome, and can't help but think that there's a better way of doing it? All help …

My program passes a parameter that looks like this: [CODE]std::vector<myDataType> vec; void function(&vec);[/CODE] Then the function accepts the argument like this: [code]void function(std::vector<myDataType>* myVec){ ...does something }[/code] Yet somehow I am getting the following error: error C2664: 'CMyClass::WriteVectorSTL_CSV' : cannot convert parameter 1 from 'std::vector<_Ty> *__w64 ' to 'std::vector<_Ty> *' …

[code] // The "ChoseYourOwnStory" class. import java.awt.*; import hsa.Console; public class ChoseYourOwnStory { static Console c; // The output console public static void main (String[] args) { c = new Console (); String start = ("yes"); // assignment 1 while (start.equals ("yes")) { c.println ("A high ranking thug comes walking …

I came across these to statements and i am not sure how they are parsed and the output given is produced... [CODE] printf("%d",printf("%d %d",5,5)&printf("%d %d",7,7)); [/CODE] o/p : 5 5 7 7 3 [CODE] printf(" %d %d",printf("%d %d",7,7),printf("%d %d",5,5)); [/CODE] o/p : 5 5 7 7 3 3 Could some …

Being a noob, such a simple question i answered as soon as i posted :| - delete thread please.

Hello everybody, I am new here in this community and I hope to learn a lot from you guys and then maybe later become the one to give out advices. I am also new to programing and I recently started learning C++. I am doing a program that is supposed …

Hi everyone, I'm new to java. I'm getting an error cannot find symbol m_weapon when i compare char which i assigned from math.random. Thank you, [CODE]public class RPS { public static void main (String[ ] args) { Scanner console = new Scanner(System.in); //used to gather user input System.out.println("WELCOME \n\n"+ "This …

[CODE] import java.io.*; import java.util.*; import javax.swing.JOptionPane; public class A15 { public static void main(String[] args) { if(args.length != 1) { JOptionPane.showMessageDialog(null, "Error: Enter one command line argument."); } else { try { String[] array = LeeJungBum15.readFileReturnWords(args[0]); // read file sortAndPrintArray(array, args[0]); // sort alphabetically and print the arrays } …