C++ :: Difference Between Data Abstraction And Data Hiding?
Mar 20, 2014What is the difference between Data Abstraction and Data Hiding?
View 14 Replies
ADVERTISEMENT
C++ :: Difference Between Encapsulation And Data Abstraction?
Apr 19, 2013what is main Difference between Encapsulation and Data Abstraction?
View 2 Replies View RelatedC :: Store Data In Binary File Then Use It To Find Inverse Of Matrix Form Of Data
Dec 6, 2013I need to find inverse of a matrix data in binary file should be used to form matrix.its not finding inverse correctly rest is working good.
Code:
#include <stdio.h>
void createbin();
void display();
void inverse();
int main()
{
createbin();
display();
inverse();
[Code] ....
C++ :: Read Byte Of Char Data And Convert It Into Text String Of Binary Data That Represents Hex Value
Dec 26, 2013I am writing a program where I need to read a byte of char data and convert it into a text string of binary data that represents the hex value...
i.e. The char byte is 0x42 so I need a string that has 01000010 in it. I've written the following subroutine....
------------- My Subroutine ----------------------------------------------------------------------
void charbytetostring(char input, char *output){
int i, remainder;
char BASE=0x2;
int DIGITS=8;
char digitsArray[3] = "01";
[Code] ....
When I submitted the byte 0x42 to the subroutine, the subroutine returned to the output variable 01000010... Life is good.
The next byte that came in was 0x91. When I submit this to the subroutine I get garbage out.
I am using a debugger and stepped through the subroutine a line at a time. When I feed it 0x42 I get what I expect for all variables at all points in the execution.
When I submit 0x91 When the line remainder = input % BASE; gets executed the remainder variable gets set to 0xFFFF (I expected 1). Also, when the next line gets executed..
input = input / BASE; I get C9 where I expected to get 48.
My question is, are there data limits on what can be used with the mod (%) operator? Or am I doing something more fundamentally incorrect?
C++ :: Add Data To Text Files Which Are Required To Store 3D Scan Data
Jul 10, 2013I have written the following code to add data to text files which are required to store 3D scan data (I have to calculate the y-coordinate). My code seems to work except that it stops working when I want to create more than ten text files i.e. the directory I am trying to store them in will not hold any more than ten text files. Code is shown below.
#include <string>
#include <locale>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;
[Code] ....
C++ :: Data Input Into A Text File While Not Deleting Original Data
Apr 19, 2013I want to input data into text file while not deleting the original data in the file and I use something as
ofstream writefile;
writefile.open("example1.txt");
if (writefile.is_open()) {
for(j=0; j<N; j++) {
[Code] ....
But this will delete the original data.
C/C++ :: Display Data From File Into 2D Array - Print Closest Bmi From Data
Mar 28, 2015#include <iostream>
#include <fstream>
using namespace std;
int main() {
int r = 0;
int c = 0;
int num[17][15] = { 0 };
[Code] ...
// Here is my code for displaying the data from the text file into a 2d array and height next to it, but I am not able to diaplay the height from 60 to 76 next to the row of the 2d array, as shown in the table below. This is my program:
Recently the health authorities have listed a new way to calculate the body mass index (BMI) of an individual.
Values of 20 – 24 are classified as normal, 25-29 as overweight, and 30-34 as heavy.
The table below is a portion of a typical BMI table.
BMI:202122232425262728293031323334
Height:
60102108113118123128133138143149154159164169174
61106111116122127132138143148153159164169175180
.
.
.
MY task is to write a program that does the following things:
1.Produce the table by reading in the data from bmi.txt (on Moodle) into a 2-D array.
2. Display the table neatly on the screen, with row and column headings. The BMI should go from 20 to 34. The height should go from 60 to 76 inches.
3. Prompt the use for their height (in inches) and their weight.
4. Make the program print the closest BMI.
If their weight is lower than the values on the table, use 20 as the BMI.
If their weight is higher than the values on the table, use 34 as the BMI.
5.Loop the program so the user can find more BMI’s.
C# :: Data Source Does Not Support Server-side Data Paging
Apr 20, 2014Been trying to configure the GridView to display ony 4 rows of data at a time. I thought it wasn't working because I forgot to set AllowPaging to True, but after I did that, I just get the error of
The data source does not support server-side data paging.
Source Error:
Line 66: titlesGridView.DataBind(); // displays query results
Here is my Books.aspx.cs code:
// Fig. 29.11: Books.aspx.cs
// Code-behind file for the password-protected Books page.
using System;
using System.Data.Entity;
using System.Linq;
namespace Bug2Bug.ProtectedContent {
public partial class Books : System.Web.UI.Page {
[Code] ....
Am I missing anything or doing something wrong thats not causing it to page & only display 4 titles at a time?
C# :: Send Data To Generic Handler That Accepts JSON Data
Apr 26, 2014I have a situation where I am accessing an ASP.NET Generic Handler to load data using JQuery. But since data loaded from Javascript is not visible to the search engine crawlers, I decided to load data from C# and then cache it for JQuery. My handler contains a lot of logic that I don't want to apply again on code behind. Here is my Handler code:
public void ProcessRequest(HttpContext context) {
JavascriptSerializer jsonSerializer = new JavascriptSerializer();
string jsonString = string.Empty;
context.Request.InputStream.Position = 0;
using (var inputStream = new System.IO.StreamReader(context.Request.InputStream))
[Code] ....
I can call the function : getUserControlMarkup() from C# but I will have to apply some URL based conditions while calling it. The contentType.typeOfContent is actually based on URL parameters.
If possible to send JSON data to this handler then how to do that. I am trying to access the handler like this:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Common.host + "Handlers/SideContentLoader.ashx?typeOfContent=1&UCArgs=cdata");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
But its giving NullReferenceException in Handler code at line:
ContentType contentType = jsonSerializer.Deserialize<ContentType>(jsonString);
Visual C++ :: Finding Value In Data File Closest To Calculated Data?
Jan 11, 2014I'm reading from a file the middle column of data (Volts) where my test file "AP.txt" is opened by my program. Here is a segment of the data:
time Volts dV
49552 -66.20183 -0.01556807
49553 -67.76025 -0.01556495
49554 -69.30704 -0.01533247
49555 -70.81799 -0.0148486
49556 -72.26774 -0.0141133
49557 -73.63226 -0.01315276
49558 -74.89141 -0.01201764
Since the calculation I performed gives me -71.77 Volts, I need to match this value to the time that this occurs closest to using my program, and output the time that this occurs at.
Here is my program so far:
int main()
{
std::ifstream inFile;
inFile.open("AP.txt");
ofstream results_file ("maxvaluewithinput.txt");
float TimeAtdVMax = 0;
float VoltsAtdVmax = 0;
[Code]...
If you're curious, this program isn't for homework. It's part of the independent learning on C++ I'm doing for a Master's Thesis; the program will eventually model the APD90 of a ventricular action potential.
Visual C++ :: Reading In Data And Displaying Out All Data In Linked List?
Feb 6, 2014I am wanting to be able to add as many different instances of data, while the user has not stated 'n', but then it only ever writes back to the screen the input for the last set of data. Where as I want to display back to the screen all the data that has been entered.
Code:
#include <iostream>
#include <string>
/*Function Declaration*/
void createItem();
void returnItem();
//Items structure
[code]...
C :: Create New Data Type Data Declared As Int
Feb 1, 2015I'm trying to create a new data type Data declared as int. What comes up to my mind is to create a structure like
Code:
typedef struct Data {
int number;
} Data;
but when I need to use the data I need to go through the structure. Is this a good way to declare a new data type?
C++ :: Loop To Read In Data And Check Data
Oct 8, 2013struct receivers
{string fname, lname, team,;
int receptions, yards, TDs, longest,rec20, fumbles, yac, firstdown;
double, averagepergain, averageperrec
}
C++ :: Getting Data From Excel - CSV File Or Data Library?
Jan 30, 2013I am very very new to C++. A bit of background. I have been writing in excel vba for large number crunching, and the code is now taking quite a while to run. A friend of mine suggested i start writing in C++, so i read up on it. And downloaded Code:Blocks.
My VBA Code is:
Sub arrayss()
Dim NameArray As Variant
Dim datarray As Byte
Dim DirectionArray As Variant
Dim WinArr As Variant
[Code] .....
Ultimately i would like to recode this to C++, but my first and probably silly question is how do i get the data from Excel to use in C++. I was thinking either to put the data in 3 csv files and convert into three Arrays in C++. Or maybe create a library of the data in C++. Ultimately it is speed i am looking for, so before i start recoding i wanted to start with the best way.
The data is like this in excel: (don't know how to create a table)
ABC DCA GFE THE
15 0 1 0 1
30 1 0 1 0
45 1 1 0
00 0 0 1
15 1 1 0
15 1 0 0 1
15 0 1 1 1
30 1 0 0
45 1 1 1
So the headers would be in one array, the 15's, 30's etc would be in another array and the 1's and 0's and Empty ( i need it to record an empty cell) would be in another array...
C++ :: Separating Abstraction And Implementation
May 13, 2012What is the benefit on separating the abstraction and implementation.
The below code
Code:
class FileProcessor {
public:
virtual void processFile();
};
class DocProcessor : public FileProcessor
[Code] ....
Till now it is fine. suppose DocProcessor and ExcelProcessor uses two big algorithm to process these file types then I still can have subclasses like :
class Algorithm1 : public DocProcessor
{
public:
void algorithm(); //which will be called as per the algorithm class instantiated for to process
};
[Code] ....
same for ExcelProcessor class
Here everything looks fine to me. [ I have not used the bridge pattern to separate the abstraction and implementation]. The only thing i can achieve using bridge is that the number of classes will be reduced if new class like jpgProcessor is introduced or new algorithim is introduced.
Then why it is recommended that always separate the abstraction and implementation...
C :: File Operations - Fwrite Padding Extra Data In File Compare To Data Provided As Input
Oct 28, 2014I am trying to write my files to another subfolder . Below is my program.
Code:
cat th6.c
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#define SIZE 8
#define NUMELM 8
[Code] ....
I observe my filename along with directory as text in the new file created in sublfolder. This is output.
[cporgs/apue/threads]: mkdir first
[cporgs/apue/threads]: ./a.out test.txt first
test.txt -- first/test.txt
dfdfdfdfdfdfdf-14
dfdfdfdfdfdfdf-14
in thread test.txt first
[cporgs/apue/threads]: cat first/test.txt
dfdfdfdfdfdfdffirst/test.txt
[cporgs/apue/threads]: cat test.txt
dfdfdfdfdfdfdf
I could not able to get from where this filename and folder is getting added.
C++ :: How To Use Data From A Data File
Nov 8, 2014I need to perform operations on data from .data file i am able to load the file but how to use the data and perform operations on it. The file had roughly around 200 entries.
View 4 Replies View RelatedC++ :: Input Data From File / Write Data To File
Mar 8, 2013Ben has been administering a MBTI personality test. Now he has all the responses, but the task of scoring and compiling results seems daunting. The personality test* is a series of 70 questions for which the available responses are ‘A’ and ‘B’. Based upon the answers to the 70 questions, a personality profile is determined, categorizing the degree to which the responses place the person on four scales:
Extrovert vs. Introvert (E/I)
Sensation vs. iNtuition (S/N)
Thinking vs. Feeling (T/F)
Judging vs. Perceiving (J/P).
Each of the 70 questions relates to one of the four scales, with an ‘A’ response indicating the first of the corresponding pair (E, S, T, or J) and a ‘B’ indicating the second (I, N, F, or P). For instance, an ‘A’ response on the question: At a party do you:
A. Interact with many, including strangers
B. Interact with a few, known to you indicates an Extrovert rather than an Introvert; just the opposite for a ‘B’.
For this test, each question is designed to influence one of the four scales as follows:
questions 1, 8, 15, 22, 29 … are used to determine E/I,
questions 2, 9, 16, 23, 30 … and 3, 10, 17, 24, 31 … to determine S/N,
questions 4, 11, 18, 25, 32 … and 5, 12, 19, 26, 33 … to determine T/F, and
questions 6, 13, 20, 27, 34 … and 7, 14, 21, 28, 35 … to determine J/P.
Notice these come in sequences of “every 7th” question.
The goal of the test is to determine which end of each of the four scales a person leans, and to thus classify him/her based on those leanings (e.g., as ENFJ, INTJ, etc.). Since Ben would also like an indication of how strongly the test taker fell into each of the four, the program should print the percentage of ‘A’ responses for that scale.
Input for this program should come from a file responses.txt. The first line of the file will contain a single integer, n, indicating the number of test results to follow. Each of the following n lines will contain the first name of the test taker, a single blank, his/her last name, a single blank, then the 70 responses he/she gave on the test. Although the test instructions indicate that the results are most valid when all questions are answered, sometimes respondents leave questions blank. In that case, a dash appears at the corresponding place in the list of responses.
Output for the program should be written to the file types.txt. It should include a well-formatted report listing, for each test taker, his/her name, the percentage of ‘A’ responses in each scale, and the resulting personality type. A tie within a scale should result in a dash (‘-‘) for that part of the personality type.
C++ :: Stream Data To A File And Then Return To File To Add Further Data?
Aug 23, 2012I am trying to stream data to a file, and then return to the file to add further data. When I add data the second time, I then want to update the value of the second byte in the whole file. I can't seem to do this!
Here is my sample code:
Code:
int a = 1;
int b = 2;
int c = 3;
int d = 4;
int e = 5;
int f = 6;
int g = 7;
int x;
fstream out1("file.dat", ios::out | ios::binary | ios::trunc);
[code]....
The output I get is "1, 2, 3, 4, 5, 6", but I want to be getting "1, 7, 3, 4, 5, 6", because in "out2", I seekp to the second integar entry, and change it to "7".
I have also tried using ios::ate in the constructor for "out2", but this gives me the out put "4, 7, 6, 6, 6, 6", which is suggesting that when I create my fstream object "in", any seekg commands are relative to the beginning of the "out2" stream, rather than the "out1" stream.
C :: Getting Int Data From Char
Apr 4, 2013developing an algorithm with use of minimum system resources. I have an embedded board with sends data through rs232 port to system.
the moment i give the command it starts transmiting data to my pc(buffer array) Now the first 317 bytes are read as strings and i am able to get that read successfully.
The rest of the data is to be read in int form.i.e 2 bytes(short int) short quick way to read int data without much manipulation(which may cause loss of data as baudrate is very high).
Here is what i have going so far: Code: ///Reading Data
// while(rzBuff[0] != '
')
for(i=0;i<=318;i++)
[Code].....
C :: How To Get Some Data In A File
Aug 16, 2014How to use fgets(). I cant understand the bookish definition. I want to get some data in a file.
View 7 Replies View RelatedC :: How To Get Data From A File
Aug 16, 2014I'd like to get only the third column of this file into a c-programm and to calculate the mean value of that numbers.
View 7 Replies View RelatedC++ :: Get Data Out Of A Function To GUI
Apr 2, 2013I've got code in an existing more or less big library (*.c and *.h) and I want to get the output away from this library and have it in my gui. So the problem is, that in the library are many "printf" or even "cout".
Now I dont want to directly redirect the whole output, I want to get the strings and other data to my routine, which itself works this up and send it to the gui.
It is no problem to change the code in the library.
My Problem is in logic: how have I to implement it?! The library knows nothing from the routine in my gui-program.
My starting point is the following:
gui.h
#include <whatever>
void writeDataFromLibtoGUI(QString datafromlib);
void getIntFromLibtoGui(int dataFromLib);
....
[Code] ....
What is the clue to get both things together?! Have I to implement a kind of "interface" between them?
C++ :: Best Way To Store Data?
Jul 8, 2013struct Book{
string bookTitle;
string ISBN;
string author;
string publisher;
string dateAdded;
int qty;
double wholesale;
double retail;
};
What's the best way to store multiple of the above structure?Ideally, it would be with a binary output, but that isn't possible with the strings, unless I'm missing something. So that leaves me with two options.
-Create a second structure that has an outrageous char[] length, and then copy the data from the original structure to write/read to/from the file. The flaws I see in this is excess runtime with copying, and a larger amount of memory is temporarily needed. The positive I see is I can use binary output, which is easier.
-The second option is to just use an ASCII file, and put each element on it's own line, and then just use getline to read each line. The flaw I see in this is that I have to read the file into the structure, instead of just reading the structure and the file can be tampered with (Not a huge concern). The positive is the lack of negative from the above.
C# :: Getting Data Out Of A Row In A Grid?
Jan 13, 2014I'm trying to extract data from a grid, it's a Dev Express grid. I have got an object which if I hover over it in debug mode shows me the data I'm after. In the code below if I hover over "row" I can drill down through "Row" and then "ItemArray" and I can see the data I want in an array but I can't find how to get at it.
private void gridShowUsers_Click(object sender, EventArgs e)
{
Object row = gridView1.GetFocusedRow();
string [] rowarray = new string [50];
[Code].....
C# :: Add 2 Controls To 1 Data Row?
May 7, 2014I am dynamically creating a data set and row and on one row i have a calender input text field which shows the date. My boss would also like me to add a calender icon on the same row next to the input field.
AddGridRow(dt, "Rating Date <font color='red'>(252)</font>", "ST_RATG_DA", "ST_RATG_DA_ID", paircode: "-1");
They want the calender to be right after the text box row definition:
AddGridRow(DataTable dt, string itemName, string dataColumn, string pubIDColumn, bool isPARAMTR = false, string paramTable = "", string paramColumn = "", string paircode = "")