Reading text file with correct text encoding mode
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I can read from text file using this code but i'm unabled to read
Turkish or other non-English codes, how can i read non-English chars
and set the default encoder parameter as if it's working fine in
Windows Notepad's ... |
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Posted On: Sunday 25th of November 2012 09:51:58 PM |
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429 |
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RELATED TOPICS OF C Language PROGRAMMING LANGUAGE
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AnonMail2005@gmail.com wrote:
> wxWidgets and sockets are OT in this newsgroup.
That is a matter of perspective, especially when the bug is somewhere in
between and might also involve boost::thread usage.
However, a fullquote followed by a single line of a useless "smart"
remark is always OT.
....
Lars |
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199
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Posted on:
Wednesday 7th November 2012
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169
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Posted on:
Wednesday 7th November 2012
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I'm wondering if someone could point me to the flaw in the following
code that uses the while(!FP.eof()) condition to read the input data.
This condition is reading the last data point of the file twice.
#include
#include
using namespace std;
int main(int argc, char **argv)
{
double x;
ifstream FP("test.d");
//while(!FP.eof()){FP >> x; cout x){cout |
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163
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Posted on:
Wednesday 7th November 2012
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I came from delphi world and now I'm doing my first steps in C++. I'm
using C++builder because its ide is like delphi although I'm trying to
avoid the vcl.
I need to insert new features to an old program that I wrote in delphi
and it's a good opportunity to start with c++.
well, the problem is:
I need to read a binary file according to some structure, all
variables of its structure are of type "char" of different sizes.
The reading is made ok, but the value that I got of ManVer is his
value concatenated with Pieces and Weight and WeightUnit, the value of
Pieces is his value and also concatenated with Weight and WeightUnit.
This happens with the rest of variables until the last of them, that
only has his value.
Only when I see the structure with Evaluate/Modify (Ctrl +F7 on
windows) the result is the one that I expect to get
I hope that you can help me...
here's the code:
--------------
ifstream _fileStream;
TStructure_V250_Data _buffer250;
//open the file...
char* _fName = new char[_fileName.Length() +1];
strcpy(_fName, _fileName.c_str());
_fileStream.open(_fName, ios::binary);
delete [] _fName;
//read data...
_fileStream.read((char*)&_buffer250, sizeof(_buffer250));
---------------------------
_buffer250 structure is too long, i only show you a piece
---------------------------
typedef struct _Structure_V250_Data
{
char ManVer[4];
char Pieces[3];
char Weight[5];
char WeightUnit[2];
//...
//...
//...
} TStructure_V250_Data; |
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170
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Posted on:
Wednesday 7th November 2012
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Hi ,
Sorry if I'm just being daft, but I can't immediately see why the following
code won't work. It's supposd to read in the characters from blah.raw one by
one, then output the textual representation of them to blah.txt, with spaces
between each. The end result is almost right, but it arbitrarily misses out
a couple of values. Please could you tell me if I'm doing something
obviously wrong (Or...failing that, might I have a minor bug in my library
implementation I'm assuming it's my own fault for the moment, but it has
crossed my mind...)
Cheers,
Stu
(I'm trying to do this as a quick(!) way of getting a heightmap into MATLAB
to render a surface rather than writing a heightmap viewer in OpenGL, for
what it's worth, and it's missing one pixel value each on the first and last
lines.)
#include
int main()
{
std::ifstream ifs("blah.raw", std::ios::binary);
std:fstream ofs("blah.txt");
unsigned char c;
while(ifs >> c)
{
ofs |
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247
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Posted on:
Wednesday 7th November 2012
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hello, what i am trying to do is set up a loop that grabs multiple
variables from an input file. my question is, is there a built in
function in the istream class that can grab multiple values on one
line.
such as
60 40 10 10
all getting put into different variables. the problem i am having is
that there is other data in the file that i do not want to do this to.
can i set the get for only the first line of data from the file. |
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161
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Posted on:
Wednesday 7th November 2012
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Hi! I have a program with a class that needs to be able to write
itself to a file in clear text format. The file has two integers and
vector of struct objects. The struct has a string that can consist of
one or more words and a few integers. I'm able to create the file
properly, as confimed by viewing it in a text editor, but something
goes wrong when I tried to read it. I've made a test program
illustrating the problem:
#include
#include
#include
#include
using namespace std;
struct s_t
{
s_t() {}
s_t(const string& si, int xi, int yi) : s(si), x(xi), y(yi) {}
string s;
int x, y;
friend ostream& operator(istream& is, s_t& rhs);
};
ostream&
operator> x >> y;
{
s_t temp;
while (in >> temp) vec.push_back(temp);
}
in.close();
cout |
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VIEWS ON THIS POST
167
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Posted on:
Wednesday 7th November 2012
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,
I've encountered a strange problem which I can't seem to explain.
I've written a simple C++ class that deals with a certian binary file.
In one of the methods there, I wish to update a file - namely to read
a certain field whose offset I know, and then write to another field,
whose offset I also know.
In order to read the data, I first use file.seekg(offset, ios::beg),
and then a read command; I've checked the variable, and this part is
executed as it should be. The problem is with the writing.
To place the head where I want it, I use a file.seekp(offset,
ios::beg) statement. After this statement, regardless of what the
value of 'offset' is, file.tellp() always returns '-1'.
The file was opened using the statement:
file.open(FileName.c_str(), ios::in | ios:ut | ios::binary)
where FileName is a string. The reading goes smoothly and returns the
correct values, so I doubt there's a problem with the actual opening
of the file. |
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VIEWS ON THIS POST
158
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Posted on:
Wednesday 7th November 2012
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Thank you, all of you have been very very helpful in this and i am very
apprciated.. Now i have what i need, but it seems the program will not
rename the extension and refuses to.
heres the code I have:
#include
#include
#include
using namespace std;
int main(){
ifstream fin;
string fname,fdefault="BmpData.txt";
cout |
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VIEWS ON THIS POST
163
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Posted on:
Wednesday 7th November 2012
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hi-
I want to read in a text file that is comma delimited with floating
point values. I'm confused whether ifstream or fopen is the correct
format to use for this. if I use ifstream, how to I read in one line
at a time into the array also is there a way to get the total number
of lines in the text file so I know how big to set the array
the text file looks like
1.555,2.555
1.948,33.44
etc, and I just want to put the values in an array with two columns.
it sounds pretty simple but I haven't been able to figure out how to
do it yet.
so far the code is
ifstream input("data_record.txt")
if (input.fail()){
cout |
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VIEWS ON THIS POST
170
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Posted on:
Wednesday 7th November 2012
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Other than looking cleaner in the object oriented approach (each
thread's main function in one class) vs. having UINT _ _stdcall
ChildThread (void *args) {...} required declarations for Windows
kernel calls, I'm not sure about the advantages of the first ... |
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VIEWS ON THIS POST
200
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Posted on:
Saturday 10th November 2012
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I am trying to add the ability to read the NeXus file format to my program,
I found a library called NCL which does this. My problem is that all my
experience is in in Delphi so my C++ is ... |
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VIEWS ON THIS POST
170
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Posted on:
Saturday 10th November 2012
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,
I hope this is the right place to post a question on Boost. If not,
please let me know where I can post this message and I will do so.
I am having a strange problem with std::string as ... |
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VIEWS ON THIS POST
155
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Posted on:
Saturday 10th November 2012
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Currently I have a single threaded server, developed using C, serving
multiple client at the same time, now I want a new feature:
a. I need to execute a particular program at some point, e.g.
email.exe
b. the email.exe might ... |
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VIEWS ON THIS POST
141
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Posted on:
Sunday 11th November 2012
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A little background first. I've done a bit of C++ programming in the
past, but then fell in love with the ease of multithreaded and GUI
programming in Java. I've been using Java for a long time now and have
... |
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VIEWS ON THIS POST
129
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Posted on:
Sunday 11th November 2012
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Compare these two programs:
int main() {
const wchar_t str[] = { 0xFEFF, 0x2EE4, 0x0000 };
wstringstream ss( str );
wstring line;
getline( ss, line );
assert( line.size() == 2 );
assert( line[0] == 0xFFFE );
assert( line[1] == 0xE42E ... |
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VIEWS ON THIS POST
155
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Posted on:
Sunday 11th November 2012
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Thank you for your kind & help !... |
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VIEWS ON THIS POST
142
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Posted on:
Sunday 11th November 2012
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I have a programs that reads char ouput and should send a signal when
it reads "login". I am currently reading into a char array but how do
I check for the match I don't think I can do-
... |
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VIEWS ON THIS POST
135
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Posted on:
Sunday 11th November 2012
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hello evreyone ,
when i last posted to ask you people to suggest me where to begin from
for multithreading in c++
a lot many good people suggested me to begin with a good book .
the only one of ... |
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VIEWS ON THIS POST
134
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Posted on:
Sunday 25th November 2012
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<- about to have a major crisis here.
I wanted is to create a little tool with a GUI. Now I see problems
related to thread programming arising everywhere. If I use the GUI to
set a flag as ... |
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VIEWS ON THIS POST
164
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Posted on:
Sunday 25th November 2012
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