C++ :: Updating String From Aaaa To Dddd

Jan 29, 2012

I am writing some code that takes a string of n letters, so a, or aa or aaa or aaaa...a and transforms these into d or dd or ddd or dddd...d by essentially counting. e.g aaaa -> aaab -> aaac -> aaad -> aaba and so on. Also technically the user inputs what the ending is whether it be d or e,f,g; however, for practical reasons counting up to dddd should work. My main issue is I am having trouble getting the letters correct. I get up to aadd and then once I go to abaa I have trouble getting the second to last a to switch correctly.

Code:
#include<iostream>
#include<string>
#include<vector>
using namespace std;
int main() {
vector<string> pleasework;
string apple = "aaaaaa";
int end = apple.size()-1;

[Code] ....

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C Sharp :: Updating String Values Into Custom Data Xml Field

Feb 23, 2014

I have a variable named Authors. Sometimes I will insert one author into the database, sometimes more than one author will be inserted into the database.

The page that performs the update is a .cs page. Here is the layout:

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;

[Code]....

This definitely works for updating one author's name:

if (old.Author != Author) RequestItem.UpdateField(LibraryDocID, Editor, "Author", Author);    

I just can not nail down how to insert a string of author's names.

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C# :: SQL Update Not Updating But Can Add - No Errors

Feb 1, 2015

I am currently just trying to update a record in a SQL database.I can add a record and delete a record just fine but when I go to update I get no errors but it just doesn't update.

Here is what I have and done coding for hours trial and error

private void btnAddProd_Click(object sender, RoutedEventArgs e)
{//validate method // product = new Product(txtProductName.Text, Convert.ToDecimal(txtProductCost.Text), txtProductType.Text);
product = new Product();
MakeProduct(product);
if(modify) {
Product theOneAndOnly = new Product();

[Code] ....

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C/C++ :: Updating Values In Dat File

Nov 9, 2014

The file name is "movie.dat" and currently i was able to save data into the file in this order:

[movie_code] [movie_dur] [movie_title] [movie_rating] [movie_dir] [movie_genre] [movie_status]

[12345] [120] [Movie] [PG13] [Director] [Comedy] [Active]

I want to search for the "movie_code" and change the [movie_status] from Active to Inactive.

So lets say for example i have a movie code 12345 saved in my movie file. I want to change the value from "Active" to "Inactive"for argument sake.

This is the code i was trying to do it with:

FILE *movie_fp;
movie_fp = fopen("movie.dat", "r+b");
int m_code;
MOVIE movie_data;
printf("*** Welcome to the movie updater! ***
");
if(movie_fp != NULL){

[Code] ...

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Visual C++ :: Updating To New Windows SDK?

Apr 27, 2013

I've just integrated the Windows SDK V7.0A into my VS2005 application, and I'm getting the dreaded "Application configuration error" when I try to run it on an XP machine.

It runs fine on the development machine, and some customer machines (Win7 and Win8), but will not run on XP due to missing/incorrect version dlls.

I've rebuilt all my libraries, but still no joy.

So, my first question is - If I upgrade the Windows SDK to V7.0A, do I also need to use MFC 10 and msvcrt10, or can I stick with MFC 8?

The next question is, how do I find out which dlls are missing, and which libraries or other dlls are requesting the missing versions?

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C++ :: Object Data Not Updating Correctly

Dec 14, 2013

I am writing a program that manages a group of tool bins. This group is handled as an object that is an array of two element structures called InvBin. I initialize the bins with data from a file which contains the descriptions and initial quantities. I also have functions to add or subtract items from a bin and a function to display a report of the description and quantity of all of the bins.

The add and remove functions work correctly based on the cout statement in the functions, however when I display the report, it displays the initial quantity instead of the new quantity. In addition, when I use the add and remove functions again on the same bin, they use the initial quantity.

These are the add and remove functions and the report function from the main program.

Code:
//Adds an item to a bin
void addItem(HANDLE screen, BinManager tools, int &count) {
int binNum;
int addNum;
system("cls");

[Code].....

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C++ :: Updating Global Pointer In Tree

Jul 16, 2013

I am having trouble updating my global pointer in the following code,

Code:
#include <iostream>
using namespace std;

struct RB{
RB()=default;
RB(int clr):color(clr) { }
int color;

[Code] ....

The problem is, at line where I compar y==Tnil, It is evaluating to false at the first insert. But It should be true. again, after ending the function, T again becomes equal Tnil, as a result , none of the is being inserted.

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C :: Cannot Get Out Of Loop - Stuck With Updating Variables

Jul 18, 2013

Code:
#include<stdlib.h>#include<stdio.h>
#include<unistd.h>
#include<math.h>
int main(void)
{
double N, NG, LG, epsilon, root; // setting all variables to type double

[Code] .....

The goal is to create a program to calculate the square root of a number provided by the user to an error tolerance 0.005

Looking around i fond the Code: fabs(NG - LG) < epsilon); section that was very similar to what i was using, but if this is better im down for that.

My issue, from what i can see, is the updating of the values of LG. if the test for error tolerance fails then LG needs to take on the value of the results of NG.

Now I am not 100% that is the point of failure due to the fact the script does calculate the root properly, but it never exits the program once it reaches the tolerance level.

Code: imac:ENG-3211 user$ ./hw_4_1

Please enter the number you wish to find the square root: 4

4.00 2.500
4.00 2.050
4.00 2.001
4.00 2.000
4.00 2.000
4.00 2.000
4.00 2.000
4.00 2.000
4.00 2.000

And it continues forever until i manually break the program even though the answer was found, in this example, on the 4th loop.

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C :: Updating Specific Data In The File

Mar 17, 2013

Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#define MAX 200

[Code] ....

Inside of my studentinfo.txt file

Code:
Jnh Has 2353325 23 56 72 34 67 22 46 42 5 23 56 23
Daniel Laurent 6744590 10 20 30 40 50 60 70 80 90 100 40 50

This code is working totally fine. Right now, I'm trying to update a specific data from the student info. Let's say I'm trying to update my student number of Daniel. So, in this case, I want to replace 6744590 to some other student number. I think I have to use fseek() or rewind() and use fputs() but, I don't know how I should decide where to look.

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C++ ::  Updating Array In Grading Program

Sep 14, 2014

The program will grade a series of exams and then print a grade report for students in a course.

Input: An instructor has a class of students each of whom takes a multiple-choice exam with 10 questions. For each student in the class, there is one line in the input file. The line contains the answers that student gave for the exam. The input file named "grade_data.txt" will have the following format:

line 1: the key for the exam (e.g.)
bccbbadbca

lines 2-n:
a set of answers. You know you are done when you get to a line with no data.

Note: You will not know in advance how many exams you have to grade and you don't need to store the exam answers in your program.

Processing: The program is to read the input file and grade each exam and print out the score for that exam. You will also keep track of how many students earned each score (0-10) and print a report after the grading.

Output: Here is an example of how the output might appear. You will write the report to an output file named "grade_report.txt"

Student 1 - 8
Student 2 - 10
Student 3 - 1
etc.

Final Report
------------
10 - 4
9 - 2
8 - 3
.
.
1 - 3
0 - 0

high score - 10
low score - 1
mean score - 6.25

What I am having trouble with is the second part of the program. I have already figured out each grade for each student. The part I am having trouble with is updating the array every time that it gives me a student score so that I know how many people made a 10, how many made a 9, etc.

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C# :: Datagrid Not Updating Styling After Refresh

May 21, 2014

I have a datagrid, which has a column called Status. In the database, the field is a text field that can have the values up, down, or danger.

I needed to display the status as a "light" as per client request, so I have a StatusToImageConverter class that receives the status, and returns the proper image to display in the datagrid column. Works fine.

Now the issue I am having... I have a combo box above the datagrid for the user to filter the results if desired. The filtering works fine, but the newly displayed devices do not have their status light. In the Status column, nothing appears after the user filters. I think it may have to do with the fact that I am not re-initializing the datagrid, but just refreshing it? That's just my educated guess.

XAML:
In the UserControl Resources:

<local:StatusToImageConverter x:Key="ImageConverter" />
In the DataGrid Control:
<DataGridTemplateColumn Header="Status" IsReadOnly="True">
<DataGridTemplateColumn.CellTemplate>

[Code].....

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C/C++ :: Updating Window In Game Loop?

May 25, 2014

So I am working on making a game. The first thing I did was make a window class. This correctly makes the window and displays it.

Now, I run my game loop and it just freezes the window and shows the Application has stopped working message box. I believe this is because the Window is not actually being updated.

My game loop however, looks like this.

bool run = true;
while(run) {
Window::Render();
if (Window::IsCloseRequested())

[Code].....

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C Sharp :: Updating Database From Datagridview

Jul 12, 2013

I just wanna update my database with one click only.

I do for update my database from datagridview1 but it shows a error like this :

Unhandled exception has occurred in your application . If you click Continue, the application will ignore this error and attempt to continue. If you click Quit,the application will close immediately.

Update requires a valid UpdateCommand when passed DataRow collection with modified rows

Attached Files : WindowsFormsApplication4.zip (127.2 KB)

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Visual C++ :: Dynamically Updating Image (PNG)

Dec 26, 2013

I am working on a Windows application using Visual Studio 2012. One of the screens have a text entry field for the user. Instead of using a standard text field control, am placing a image which looks exactly like a text field. Now what i want to do is, capture the key stroke and update this image with the characters entered by user.

The initial image shown to the user is "Blank_Text_Entry.png" and this is added to the resource as IDB_BLANK_TEXT_ENTRY.

This is a rectangular white image with dimensions 153 x 27, with a size of 250 bytes.

My goal is to be able to update this image dynamically based on key strokes by user and display it.

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Visual C++ :: Updating Image On A Button

Aug 2, 2013

I have created an application that has bunch of buttons on top and i want to change the image when I click on the button. But unfortunately I can't get it to work.

Here is the code:

if (serialPort1.IsOpen) {
tsbCommPortOpenClose.ToolTipText = "Open serial port";
closeCommPortToolStripMenuItem.Text = "Open serial port";
tsbCommPortOpenClose.Image = Image.FromFile("Red.bmp");
serialPort1.Close();
[Code] ....

The second one which changes the image to "image2" works fine. Here is the definition of image2:

namespace Regress;
...
private Bitmap image2;
System.Reflection.Assembly myAssembly = System.Reflection.Assembly.GetExecutingAssembly();
StreammyStream = myAssembly.GetManifestResourceStream("Regress.Sharing.gif");
image2 = new Bitmap(myStream);

When I do the same with the other image that I want to use, it won't work! I opened the project properties and added the image into the resources too, and it still doesn't work. It fails and says the file was not there. I've put a copy of the file in the root directory and one in "Resources" folder but it still doesn't work.

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C :: Updating Record In Random Access File

Nov 5, 2014

I have been searching through the forums and found a couple snippets of code and from that i came up with this. What i want to do is search for the specific movie code and then update the movie status from inactive to active (for argument sake).

Code:
#include <stdio.h>
#include <stdlib.h>

typedef struct SYSTEM_MOVIE{
int movie_code;
int movie_dur;
char movie_title[25];

[Code] ....

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C++ :: QLabels And High Speed Updating Causes Crash

Jun 26, 2014

On a project I'm working on, I need to update many QLabels very quickly. Each label needs to be updated at about 20 to 50 hertz and there can be over 50 labels at any given time. The problem I'm having is after running the program for about a minute, the labels freeze and the whole program crashes about 10 seconds later. If I comment out the setText() and setNum() calls and reroute the outputs to the console, it runs fine and never crashes. Why does calling SetText() and setNum() so quickly cause the program to crash and how can I prevent this?

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C/C++ :: Updating Value Passed Through Functions With No Return Statement?

Sep 13, 2014

I am supposed to update the value temp without using a return statement, or a global variable. I have never ran across a problem like this before and I am totally stuck. I think I'm missing something really simple and need a hint. Here is the code that was provided for "fixing".

#include "stdafx.h"
#include <iostream>
#include <cstdlib>
using namespace std;

[Code]....

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C++ :: Student Registration System - File Updating

Feb 14, 2012

I have been creating this program for a student registration system. For the file handling So far I can write in to a file , view all records, and search a single record. now i got the problem with updating details . my coding is as bellow ..

void file_update() {
int r;
struct student stu;
fstream stu_file;
cout <<"========Update Record======"<< endl;
stu_file.open("student.txt", ios::app );

[Code] ....

My problem is it won't update the record. it just adding a new record.

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C++ :: Program To Extract Numbers From A File That Is Always Updating With New Data

Mar 14, 2013

How to write a C or C++ program that extracts certain numbers out of a section after the 4, 5 and 6 space.

For Example:

The output file will produce:

[ [1900 00 0 -2.000000 0.650000 0.006000 0.020000 2.274000 0.010000 54 0 0.7 10.8 1 0 0 0.000000 17.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 18];...

So I want to extract the numbers 0.650000, 0.006000, 0.020000 because those are the 4,5,6 space after [ [

Another problem I have is that the output file I showed will always being updated constantly for instance as follow:

[ [1900 00 0 -2.000000 0.650000 0.006000 0.020000 2.2054000 0.010000 10 0 0.7 10.8 1 0 0 0.000000 17.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 13];...

[ [1900 00 0 -1.000000 0.650000 0.006000 0.020000 2.694000 0.010000 9 0 0.7 10.8 1 0 0 0.000000 17.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 10];...

[ [1900 00 0 -2.000000 0.6023000 0.04000 0.050000 2.2454000 0.010000 5 0 0.7 10.8 1 0 0 0.000000 17.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 12];...

And it will keep updating like this and I want to update the previous numbers I extracted with now the new numbers after the 4,5, and 6 space.

So I have to write a code to let it know when it encounters [ [ start looking for the 4,5,6 space and get those numbers and once it reaches ;... that's the end of that section so re-look for the next section of numbers after the 4,5,6 space.

The file will be a text file or matlab file that is always being updated with these sections of numbers. Can I make this a #include<nameoffile.h> or does .h not work with a file that is always being updated.

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C++ :: Header File That Is Continuously Updating To Extract Certain Variables?

Mar 10, 2013

I need to write a C++ program, that extracts certain variables, x y z, from a file that is continuously being updated x y z. These variables are going to be used to recalculate a new answer.

My question is to see if it is possible to have an include .h file that is always being updated so that I can extract these three variables from it, and always have the newest venison of each variable, so that the answer to the equation is always the newest updated. Should I use fopen or fwrite to do this.

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C Sharp :: Empty Path Is Not Legal Exception While Updating Images

Feb 23, 2015

I am developing 1 desktop application to my friend office,in that application i can store multiple images and i can retrieve the information for the same..My issue here is after retrieving the information when i click on update button I'm getting runtime exception i.e (Empty path is not legal exception)..

Here is the code which I wrote under updatebutton method:

public partial class CustomerDetails : Form
{  
string imageloc = "";
string imageloc1 = "";

[Code].....

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C# :: WPF Collection Not Updating With Observable-collection?

Mar 19, 2014

I have a WPF project where I am using the entity framework. I have switched all my collection types to ObservableCollection and I am also using the PropertyChanged event. The only way my collections update is if I close the application then restart it. I got to the point where I just created a new application with 1 entity and 1 combobox to display a collection and I still can't get the collection to update. In my code below I am calling the AddCustomer method to add a customer name to the Customers ObservableCollection without success.

class ViewModel:INotifyPropertyChanged {
Model1Container context = new Model1Container();
public ViewModel() {
Customers = new ObservableCollection<Customer>();
UpDate();

[code]....

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Visual C++ :: Retrieving Size Of Each String In Order To Produce A New Buffer For Concatenated String

Feb 25, 2013

What is the efficiency of the two assignments (line 1 and 2), i.e. (function calls, number of copies made, etc), also the Big O notation. I know there are function calls for retrieving the size of each string in order to produce a new buffer for the concatenated string...any difference between line 1 and 2 in terms of efficiency?

String s("Hello");
String t("There");
1. s = s + t;
2. s += t;

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C# :: Unable To Implicit Convert Type Int To String Though Declared Variables As String

Mar 26, 2014

Ok, so I'm writing this code and when I build it keeps saying cannot implicitely convert type int to string even though I declared my variables as string. Why is it giving me this error?

private static string Repair()
{
string result="";
string beep;
string spin;
Console.WriteLine("Does your computer beep on startup?:(y,n)");

[Code]...

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C :: Program Where User Inputs A String And Prints Out Length Of String

Jan 29, 2014

I would like to understand a function on strings. Below is a code that I took from my teacher where the user inputs a string and prints out the length of the string.

Code:
#include <stdio.h>
#include <string.h>
int main() {
char str[100];
int i = 0;

[Code] ....

Now I understand that it returns the count in "int" so my question is:

Let's say i declared

Code: int count = 0;
at the beginning of the code and then made
Code: count = strlen(str);
why wouldn't i have the same result? Is there a way to do it also?

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