C++ :: Parse And Edit A Text File?

Nov 14, 2014

I have this project for school where I basically need to write a program that will take any text file and convert it into html code.

string line;
int lineCount = 0;
while (!inFile.eof()) {
getline(inFile, line);
cout << line << endl;
lineCount++;
}
cout << lineCount - 1 << " lines of text read in this file." << endl;

I have this block of code to print each line of the text file into the terminal window and count the number of lines printed. But I don't know how to make it change a single character or set of characters to something else. For example, if a line of text begins with the number "1", I want to be able to change it to "<h1>".

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C++ :: Parse Value From Text File?

May 16, 2014

Suppose i have a text file with ":" as delimiter, how to i find the average value of each column? For e.g. First column will be (3+2+5)/3 and second column will be (61+87)/2 for the third column.

Sample text file
================
3:290:61:100:
2:50:
5:346:87:

I have tried using getline in while loop, but it seemed more complicated because i think it requires much more than that.

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C++ :: How To Edit Text File

Aug 7, 2014

how to change a certain part of a text file? I want to +1 to a text file every time the user does a particular input. For example my text file has name << password << count . When the user logs in and choose option 1 the program will +1 to the count.

for e.g. Bob Bob123 1

when he logs in and chooses option 1.

it will change to Bob Bob123 2

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C++ :: Parse A Text File That Contains Information

Jul 31, 2014

I am trying to parse a text file that contains information and i cant seem to get started. For example, the text file looks like this:

idx=929392, pl= 12, name= someperson
age=19
state=ma
status=n/a

idx=929393, pl= 12, name= someperson2
age=20
state=ma
status=n/a

idx=929394, pl= 12, name= someperson3
age=21
state=ma
status=n/a

I want to parse the name and age into another text file like this format:

someperson 19
someperson 20
someperson 21

possibly include other attributes next to the age like idx?

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C++ :: Using Getline To Parse From A Text File?

Nov 23, 2014

I'm trying to make a program where it reads a text file which contains "blocks" of questions like:

Type: multiple_choice
Question
Num_options: number of options
a) option1
b) option2
c) option3
d) option4
Letter of answer

and

Type: short_answer
Question
Answer text

what I'm trying to do is use parse those blocks and have it get handled by the classes, MultipleChoice and ShortAnswer.

I'm planning on using getline as a virtual function and have an if statement like
"if (string == "multiple choice)
** then get it handled by the MultipleChoice class "

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C/C++ :: How To Parse CSV Formatted Text File

Aug 9, 2012

my data are
#saben~123~tvm~999999~local~#
#ach~123~tvm~999999~body~#
#sam~123~tvm~999999~wash~#
#sus~123~tvm~999999~area~#
#sach~123~tvm~999999~local~#

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C# :: How To Edit Hex Values Of A Text File

Jan 5, 2015

I have a report that's generated by a piece of software, and (I'm assuming because it was intended for Linux/Unix) when I open to read it in notepad, it has a bunch of funky symbols in it, and incorrect line feed characters instead of returns that windows uses.

I looked at the txt file with a hex editor and can see all the hex codes for the symbols I want deleted. One of the symbols 0A.

How can I do a "find and replace" command but do it with hex codes? These symbols cant be simply placed into my code file because VS does not know how to interpret it.

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C++ :: Can Edit Text File Without Writing Content Of Whole File Again

Mar 28, 2013

Can i edit records stored in file without rewriting whole file again .?

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Visual C++ :: Tabbed Dialog - Getting Text From Edit Control

Apr 26, 2014

I have a tabbed dialog with a couple of Separate dialogs. I created classes of CDialog for each dialog. Im trying to get the text from the edit control from the tabbed dialog and it appears in a message box when I press a button on the main dialog.

Code:
myDialog test;
test.UpdateData(TRUE);
CString bla = test.m_edit1;
test.UpdateData(FALSE);
MessageBox(bla,bla,MB_OK);

The m_edit is a variable of CString for the edit box

it gives me a error and crashes.

How do I get the text from the other dialogs edit control?

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C/C++ :: How To Use Text Files As SQL Fields To Edit / Delete And Modify Records

Aug 19, 2013

I want to search and display the field stored in text file and also i want to delete the field that is entered. Case 3 and 4 is incomplete.

#include<iostream>
#include<fstream>
#include<string>
using namespace std;
int main() {
    int a;
    int st_id;

[Code] ....

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C :: Read A Line From Screen / Takes ASCII Values From Entered Text And Edit It

May 10, 2013

This is a small program that reads a line from the screen, takes the ASCII values from the entered text, and edits it. Next, the ASCII values are reinterpreted (am i misspelling?) as text, and displayed. However, my final output has (allways?) at least 7 characters, even if you enter only one. I'm also trying to accomplish, that the part of the string which isn't filled, will be printed empty. In spaces.

compiled with -std=c99.

Code:
#include <stdio.h>
int main(){
int maxsize;
printf("How long is your message?

[Code] .....

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C++ :: How To Parse EML File

Aug 28, 2014

I am doing a project processing emails in EML format. I searched for a library doing eml file parsing and got no hits. I really dont want to code the parser myself. I just want to get the project done with minimize cost. Which library should I use?

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C++ :: How To Edit DAT File

Apr 16, 2013

Well,I have a dat file which following format;

ID Level(Manager or Executive)
Name
Sales(for 12months)

For example;
W00051 M
Lee Ah Moi
1200.00 150.00 1400.20 156.00 200.00 880.00 1500.00 8000.00 800.00 120.00 1600.00 1800.00

My question is how am i going to find the value 880.00 (August) & replace it with a new value?

Is it possible for me to open & edit the same file without creating s new one?

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C :: Cannot Seem To Edit File Via Fprintf

Aug 13, 2014

Its my 1st time using fopen,fprintf and others and i cant seem to edit my file via fprintf! Heres my program:

Code:

#include <stdio.h>
#include <stdlib.h>
char letter,check,nought,bleh,hi,a;
int main()

[Code]....

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C# :: Edit File In Resources?

Feb 12, 2015

What i'm trying to do is compile a text file to an executable, but the problem is that I want to be able to edit the resource file while in runtime, for example write something on a textbox, hit compile and get the executable file edited by the texbox.

Here's my codedom:

public static bool Compile(string sourcefile, string exefile) {
CSharpCodeProvider ccp = new CSharpCodeProvider();
CompilerParameters cp = new CompilerParameters();
cp.ReferencedAssemblies.Add("System.dll");

[Code] ....

Is there anyway I could do that?

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C# :: How To Edit Existing XML File

Jul 6, 2014

I'm trying to edit an existing xml file but with no luck. I'm new to xml environment.

This is the xml content :

<?xml version="1.0" encoding="UTF-8"?>
-<mmp>
<ID>aaa</ID>
<clientID>bbb</clientID>
<time>2004-05-10T17:35:41.29</time>
<session>2000</session>
<Answer>Yes</Answer>
-<Program>
<_id>ppp</id>
</mmp>

I'm trying to change the time and id values and can't do it.I tried almost anything.

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C/C++ :: Parse Telephone Data File?

Oct 18, 2014

Write a program that reads the telephone.dat file and displays its contents on the console. The program should allow the user to add new entries to the file.

I have saved the file into a resource file within visual studio and I am trying to run the code to where the file will be shown when I run the program. I know that the program is running and the file is there because if i misspell the filename it will give me the error message. I don't know how to make the contents of the file display.

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
string input;
fstream dataFile;

[code]...

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C++ :: How To Parse XML File With Standard Library

Mar 11, 2015

How can I parse an .xml file with just C++ Standard Library?

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C++ :: Parse A String Containing Number And Characters From File

Feb 20, 2015

I have a text file which contains many sentences. I am trying to extract only the numerical values from the string that conatins characters,numbers and white spaces from the file. I want to seperate the characters and numbers into different parts.

for example: the file contains sentances as given below.

I have to go to school for 10min.
You will come here in 15min.
He stayed here for 20min.

from the above sentances, I want to seperate " I have to go to school for " and "10" and put them into two different variables and also 10 should be in integer format.

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C/C++ :: How To Parse Contents Of File To Remove Comments

Mar 12, 2015

I am working on a program where I am reading in a text file to be parsed to load data objects into their appropriate classes. I have a class to load in this file and to parse its contents. I am at the point where I would like to include the ability to have both C and C++ style comments in this text file. My current class has a constructor that takes in const std::string for its file name. Upon construction I have a while loop that calls a member function getNextLine() as long as this is true this loader class object then calls parseGui(). All of this works correctly so far. Within the function getNextLine() looks like this:

// ----------------------------------------------------------------------------
// getNextLine()
// Returns True If It Got A Line Of Text (Could Be Blank If It Is All Commented Out Or
// If It Truly Was A Blank Line). False Is Returned When There Is No More Data In The File
bool GuiLoader::getNextLine() {
if ( !_file.readLine( _strLine ) ) {
return false;

[Code] ....

As you can see this getNextLine() method reads in a single line of text and saves it into its member variable which is a std::string. It increments the line number, then a utility function trims out leading and ending white spaces. The next part is where this class calls a member function to remove comments. It is in here where I need to parse the string to look for comments either "//" C++ style line comments or "/* ... */" C style block comments that can span multiple lines. I have tried many different ways to go about doing this, and I am stuck on the C style comments. A note to consider is this: the way this code is designed is reading in a line of text from the file into a string variable and in doing so it is not logical for me to read in the complete file and do a pre-parse scan or analyzer.

This is what I have so far, however there are still cases that this code will fail on

// ----------------------------------------------------------------------------
// removeComments()
void GuiLoader::removeComments() {
const unsigned tokenLength = 1;
static std::string::size_type indexA;
static std::string::size_type indexB;
const std::string commentStartingToken( "/" );
const std::string blockCommentStartingQualifier( "*" );

[Code] .....

An example of where this code will fail is when it encounters a single '/' any where on a line of text as it goes into an infinite loop. I am not sure on how to go about skipping this lonely '/' and advanced the index to look for a possible next '/' that belongs to a '//' or a '/*'. I know that this is sort of trivial, but for some reason or another I am having writers block.

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C# :: Using Split Method To Parse Line In CSV File

Jun 6, 2014

I'm using the Split method to parse line in a csv file. The following code works if there are no commas in the text of my data.

string csvLine;
string[] splitLine;
csvLine = "Jim Borland,1234,Never dreams in code";
splitLine = csvLine.Split(',');

But if I have commas in the some of the text as below I get then wrong output. So I need split on a commas which are not enclosed in double quotes.

string csvLine;
string[] splitLine;
csvLine = ""Jim,C,Borland",1234,"Never dreams in code"";
splitLine = csvLine.Split(',');

The output I want is:

Jim,C,Borland
1234
Never dreams in code

I found this :

If your strings are all well-formed it is possible with the following regular expression:

String[] res = str.split(",(?=([^"]|"[^"]*")*$)");

The expression ensures that a split occurs only at commas which are followed by an even (or zero) number of quotes ... and thus not inside such quotes).

Nevertheless, it may be easier to use a simple non-regex parser.

But the .split gives me an error and .Split doesn't work either.

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C++ :: How To Read / Edit CSV File And Continue From Last Login

May 5, 2014

I am working on a program that will do several mathematical calculation and will store the data into a csv file.The one below is just a prototype version of this.In my program,I will store my csv file as (current-date).csv using time.

With this in mind,I want my program to first check does (current-date).csv already exists.If not,the program runs normally and output all the data into the csv file.

However if (current-date).csv already exists,I want my program to read and edit that particular csv file,by skipping part1 in my code(name,id N etc.) and start with prompting the user for numbers straight-away.

In other words, if (current-date).csv already exists,the user should continue outputting the numbers from where the user last left before last termination instead of outputting the name,date & etc into the csv file again.

Eg: if no=22, continue inputting values from no=23 till terminating the program again and storing the values correctly into the csv file.

#include <iostream>
#include <fstream>
#include <iomanip>
#include <locale>
#include <string>
#include <sstream>
#include <time.h>

using namespace std;
// Program to read date N store it as currentdate.csv

[Code] ....

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C++ :: Parse TXT File - How To Get X And Y Coordinates Of Each Control Points From 2 Images

Jan 30, 2013

I have a text file with the following format

//MAIN OBJECT
Object = ControlNetwork
Created = 2013-01-28T12:26:17

//FIRST CONTROL POINT OBJECT
Object = ControlPoint
PointId = 1

[Code] ....

I want to get the X and Y coordinates of the each control points from 2 images.

For example, from the above file i want to retrieve such information:

-PointID=1 and point coordinates are 802,725(from image1) and 480,708 (from image2)

-PointID=2 and point coordinates are 317,130(from image1) and 128,116 (from image2)

There can be millions of points in such a text file. So what is the best way to parse these files?

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C# :: How To Edit A Cell From Datagridview And Save It To Resx File

Feb 10, 2015

i am working on a resx file. I have read the file and load it on data-gridview. now i wanted to be able to edit from the file and save.I have tried many ways but i didn't come with the solution. yesterday i tried this code below. I don't know how i can edit. here is what i have tried,

private void btnSave_Click(object sender, EventArgs e) {
foreach (DataGridViewRow _row in Gridview_Output.Rows) {
DataRow dt1 = oDataTable.NewRow();
for (int i = 0; i < Gridview_Output.ColumnCount; i++) {
Gridview_Input.SelectedRows[0].Cells[1].Value = oDataSet.Tables["data"].Rows[0][1].ToString();

[Code]...

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C :: Find Parse Error On Line 24 Reading From A File Using Structures

Mar 6, 2015

im trying to read employee information from a file using structures but im having problems with getting the file to open and read in the information

Code:

Write a programt that inputs (at most 50) records from a sequential file
#include <stdio.h>
#include <stdlib.h>
struct employee // employee structure definition
}

[code]....

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C :: Using Strtok In Conjunction With Fgets Function To Parse File Data

Feb 17, 2013

In the assignment we are forbidden to use fscanf(). I have been trying to get this to work, but I've started to realize that I do not have a complete understanding of what strtok() actually does. I'm getting this warning when debugging: "assignment makes integer from pointer without cast."

This warning happens when assigning str to goal and assist, and I think it is because they are, when dereferenced, integers. The code below correctly assigns the name into the correct spot, but leaves nonsense data in the goal and assist arrays.

ex:-7880, -7888 file example: NAME GOALS ASSISTS JOHN 1 2

Code:
void readLinesFromFile( FILE* Ptr, int* goal, int* assist, char** name, int lines ){/*
* Reads lines from files and populates the arrays with the corresponding info.
*/
int index;
char hold[ MAX_LINE ] = { 0 };
char* str = NULL;

[Code] .....

From what I understand about strtok(), it returns a string, and takes in a character array and a key value that tells it when to stop. In the online examples I've seen, they use NULL in the first field. I'm not sure why.

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