Software Development Forum

So I have an assignment to write a program that calculates and prints the sum of the series for the following series: S = 1/(1*2) + 1/(2*3) + 1/(3*4) + ... + 1/(n*(n+1)) I know I basically need to loop and increment a variable till it equals n, but I …

hi.... i'm trying to write a function clear image but i am not being able to write it. it is as follows. i am loading a picture and i want by clicking the button clear, the picture map.gif dis appear.. there is a function blank in tkinter but i am …

Hey All, sorry if this is a stupid question but im still new to all this. i want to enter something into a text field.. but i want for example the time in 24hr format "2200". How can i ensure that what the person is entering is in fact an …

Good evening, I'm basically doing a program that does something like this: You enter two integers -4 and 6 which represent intervals Then the loop does this: (-4) + (-3) + (-2) + (-1) + 0 + 1 + 2 + 3 + 4 + 5 + 6 After that …

(3%4) * 6= 18.

Following along a C tutorial, I entered this code. When I compile and run, it aks for my age, which I enter. But it doesn't display any of the 'if' or 'else' statements. So I hit enter and the window closes. Is there a trick or am I entering the …

have anyone ever create a [COLOR="red"]progressbar using Tkinter[/COLOR] and make [COLOR="red"]button flash or place a picture on button.[/COLOR] is this possible with tkinter. please can anyone tell me or show me how i can do these things??? thank you very much

Hello, Could you explain me why the first approach in the code above works and the second one fails? [CODE] #include <cstring> #include <algorithm> //char a[] = {'a', 'c', 'b', 'a', 'c', 'b', '\0'}; // Works char* a = "acbacb"; // Fails sort(a, a+strlen(a)); [/CODE]

After searching around this forum for a bit, I found getch() in conio.h, this very closely matches the type of function I am looking for, but I don't want it to wait for the user to enter a key (It would be nice if it would just return -1 or …

Hello, I've been having a problem with my arrays. The error that I am receiving says "[my array] undeclared (first use this function)" and "invalid types 'bool[int]' for array subscripts". My code has the following setup: [code=cplusplus] int array1[some size][some size]; int main(){ int array2[somesize];int array3[somesize][somesize]; int NUM; /*This number …

I have this data ROW 1: 3 15 36 56 71 83 97 106 118 135 138 ROW 2: 3 10 31 51 71 78 97 105 113 135 138 How to count when 3 meet 15 is 1 3 meet 36 is 1 3 56 is 1 3 meet …

Hi all, I already convert a C++ project to C# project. It's fine and working ok. On C++ I use DWORD data type. But in C# for that I used just a int value. Is that ok. Is there compatible data type which I can use for my project. Thanks.

I was using my old C++ assignments to teach myself Python and ran into issues every other line of code. In my attempt to find another way to ease into the lang I found what I think is an awesome tool "How to Think Like a (Python) Programmer" I understand …

I am wondering if it is possible to accomplish following in VB.NET: I would like to automate files move and sorting from "C:\uploaded_files" (files contain any extensions e.g. .pdf, .tif, .eml, .jpg, etc) to directory under different subdirectories as shown below. F:\Files\Oregon\Sold\Victoria Kraus\2008\OSVK082036PI\ F:\Files\Oregon\Leased\Victoria Kraus\2008\OLVK082036PI\ F:\Files\Washington\Sold\Victoria Kraus\2008\WSVK082036PI\ F:\Files\Washington\Leased\Victoria Kraus\2008\WLVK082036PI\ F:\Files\Oregon\Sold\Dan …

Hi, I have written a Solitaire game program and have made a history of moves so the user may either go back on moves and make another choice or go forward after having gone back. Now I am using a vector to store the moves. When the user has made …

so far I ask user for number of terms : [code=c++] cout<<"Enter the number of therms in the array \n\n"; cin>>x; for(i=0; i<x; i++) { cin>>arr[i]; } [/code] But It looks preety non-user friendly, I wanna input it just like we enter a string. We the user should hit shift …

I am working on a program that implements a complex number class. I will include the main part of the code. I am getting the following error and can't figure out why. [code] error C2143: syntax error : missing ';' before 'namespace' [/code] Here is the beginning of the program. …

Hi all. have just dragged a datagridview control onto a form. this loads up a sql d/b fine and appropriately. the grid is editable (new rows can be added/changed etc)Now i need those changes to be thrown back to the d/b - how do i do that ? many thanks …

You VB .NET developers out there, I have posted 3 threads requesting help on reading floating point values from a binary file but did not get any reply at all. Is it because I am asking a stupid question or noone really have a clue about the question I asked? …

Hi Guys, I'm writing a program for work which uses the HtmlTextWriter to output html files (it's a reporting system). In each file I want to render a style tag at the beginning and to do this I'm using the HtmlTextWriterStyle enumeration. This means I need to convert any value …

Hi I'm just a newbie here and I hope someone might be so kind to help me with my stuff. I have a project regarding C. I'm already half-way done and all that are left to do are: 1. Parse a string into words and arrange these words in descending …

ok I am making a maze for my school with gotoxy and getch and 2d character arrays I have 2 errors though when I am compiling it.. here's the source: [CODE=cplusplus]#include <iostream> #include <stdio.h> #include <windows.h> #include <stdlib.h> #include <conio.h> #include <ctype.h> using namespace::std; char moveR; char moveL; char moveU; …

Hey I've been writing this hangman code for last week in college. and nearly got it finished but am after running into a problem. i want to run two different button handlers but can not figure out how to?. one for the letter a to z which i have working …

I am having problem in converting military time to standard. The task I have is to take time from different cities around the world, adjust it to eastern time, and then display it in standard format with AM or PM. For example: User gave time for london 23:40 I scan …

Ok i have this assignment almost complete. But after the standard deviation, i am supposed to show the minimum and maximum temperatures and the number of the position of the temperature. I just do not understand how to to that.... [code=cplusplus] //Assignment 6: Computing with Arrays //By: Curtis Davenport 2/24/08 …

I am writing simple Python modules and when running one containing errors in the script the console window that displays the error just flashes up for a split second and disapears. Is there any way to keep this window shown? I am working on Windows XP in the Eclipse environment …

Hi all I'm self taught and relatively new to programming and have been battling with a TDBGrid's onMouseDown event in Delphi 7. Hopefully I'm missing something small and you masters out there will be able to enlighten me! I have a TVirtualStringGrid and TDBGrid on my form. I want to …

I Would like to create a High Score For a Game in jave Called Jetman. i have created a class in java called Score and Score list to display the score but i do not know how to create a highscore using an Array List the Score Class is package …

I am seriously so bummed out right now, and I feel like a complete idiot. I have been sitting here for seriously 7 hours now trying to figure out how to do this program, and the book I have for the class has been of no help whatsoever. I posted …

I wrote a simple bubble game... but it look long and complicated... so any idea to short it down? i heard about class.. but i dunno how to use it.. so is my program can use class? or any idea to short it down? #include <iostream> #include <ctime> using namespace …

Hi, I am doing my final year project in visual studio 2005, and I am using a datagridview to populate all record from a given table. Well I wanted to know if there is a some kind of way that when the user clicks on a specific record from the …

I'm trying to write a program with a has-a relationship but the initialization isn't working. The error I'm getting is: [QUOTE] h:\oop labs\license retry\license2.0\license2.0\licenses.cpp(15) : error C2275: 'Date' : illegal use of this type as an expression[/QUOTE] [CODE=cplusplus]Licenses::Licenses(int id, string name, string ad, Date, Date) :issue_date(Date), expiry_date(Date) // error occurs …

Last week I had to make a dice rolling program that uses a one demensional array that stores and displays the number of times each sum of two dice appear. I completed this code with little effort. But this week we have to modify the code so that instead of …

Hello all: I was developed a simple descending timer , the problem was while it's execute and after I entered the value in the textbox ,, this message appear: (((Ontimer(): cross thread operation not valid "textbox1" accessed from the thread other than the thread was crated on ))) on timer …

Everything compiles, but after I input I just get an infinite loop. Is there something I can do differently to make it not loop? [code] #include <iostream> #include <iomanip> #include <string> using namespace std; // Program Description // This program will calculate test results for // a set of test …

I'm getting Linker errors when trying to compile my OpenGL code with Dev C++, the code compiles perfectly on the university machines using Visual Studio. I've visited several sites that explain how to get openGL to work om Dev C++, and i've followed the steps. -Installed the Dev Pack. -added …

I am trying to add child nodes to a Treeview list, I have the parent node and this is the code I have to add the child node: [CODE] parentNode = New TreeNode() parentNode.Text = Me.headerSelect.Text.ToString parentNode.Nodes.Add(Me.fieldName.Text.ToString) [/CODE] It doesn't do anything - no errors, no adding, nothing.. Also if …

hi all... anyone know how to count files when it selected on dialog box.i use common dialog, but i didn't find any function to count selected files (multiselect properties is true). any help will be appreciated. thanks.

hey...can anyone show me what am doin wrong here?? cant get this program to loop till the user enters a character other than "y"....it prompts the first time and its a succes. prompts the second time but does not wait for response.... [CODE]#include <stdio.h> #include <string.h> #define LEN 20 main() …

I have been given an assignment to construct a program that reads in temperatures every hour for 24 hours, find lowest, highest, and average, then output the temps in a tabulated form. I'm semi-sure I can manage the computational and display part, but I am at a loss as to …

My assignment is to use a method to do the pig latin part of a program I have already done. So basically, I have the program written, code is below, but am getting two errors in it. I have not really gone over using strings and returning them to the …

Hi, I've recently started learning C++ and though I have been sticking to command line stuff so far, would now like to have a play with the IDEs I've downloaded, Dev-C++ and the Microsoft stuff. When I installed Visual C++ 2005 Express edition a while back, I must have set …

All this regex stuff has me really confused. How could I just replace all the occurrences of "\\" in a string with "\n"?

Hi experts! I'm a newbie in this site and i wanted to ask for help in VB timers. We have a simple system about time monitoring. May i ask, what code will i use. if i clicked a command button (time in), it will run the time. then if i …

This Is My Code:- [code] Begin gotoxy(31,1); write('Peters Petrol Pump'); gotoxy(31,2); write('=================='); gotoxy(0,4); write('Welcome To Peters Petrol Pump...Here Are Your Options:-'); gotoxy(5,6); write('1. Console'); gotoxy(5,7); write('2. Petrol Pump'); gotoxy(5,8); write('3. Exit'); gotoxy(0,10); write('Please Select An Option...'); read(StartingAnswer); if StartingAnswer =1 then Begin clrscr; gotoxy(30,11); write('Under Construction'); repeat gotoxy(30,12); write('Press Enter …

Hi everyone, I'm new to the forums and having a problem that I can't seem to fix, so it would be great if someone could help me out! Everything in the following code works except for the while loop. When it gets to the "Input another product? (y/n) :" line, …

Trying to have a user input their grades as letter values and then assigning the letters numbers to be saved in an array. For some reason I can't get case 1 to work correctly. All it does is ask for the lab and then the grade, but once you input …

Hello again everyone. I've been trying to finish this code that calculates the eigen digit (i.e. 2349 is 2+3+4+9=18=1+8=9. It wont give me a single answer though. And we are supposed to do it through a recursive function. The code looks like this: [code=c++] #include <iostream> using namespace std; int …

In class weve been shown how to read from a binary file and read from a text file but Im unsure how to write text to a binary file? Heres my attempt so far, Can you help? [CODE] #include <iostream> #include <stdio.h> using namespace std; int main() { FILE *namefile …

I've been working with a class module to make my connection codes abit shorter but when i removed my connection from the class and made it public it was not working anymore. The way I use the class lcon = New ADOcon lds = New DataSet Dim ltb As DataTable …