Printable View
I'm reading data in from a file and putting it into a string then appending it to another file. The problem with this is that all the data is put onto one line with no whitespace characters put into outputted file. I assume this is due to the string. Is there any way to be able to output whitespace characters?
Here is part of the code:
Thanks,Code:CInput.open(FileName.c_str(), ios::in);
while (!CInput.eof()) //Read until end of file
{
CInput >> FileLine;
FileData.append(FileLine);
}
...Dan
I'm going to guess what you're asking since I didn't find your explaination too clear.
You want to read in the file, and you want to append to a string exactly, including the whitespace that is consumed by the istream::operator>>(). This is quite simple, unfortunately, using the operator>>, you give yourself a problem. That operator will stop on ANY whitespace. Which means you'd never know exactly what it's stopping on unless ofcourse you used istream::peek(). Better yet, you should probably read in a whole line with the getline() function. This way you can declare a delimeter to stop on, and append it after each encounter.Code:CInput.open(FileName.c_str(), ios::in);
while (!CInput) // Better not to use eof()
{
getline(CInput, FileLine, '\n');
FileData += FileLine + '\n'; // The line plus the consumed delimeter
}
Yeah that's exactly what I meant. Thanks for the help.
...Dan
> while (!CInput) // Better not to use eof()
Isn't actually any better either.
Code:while (getline(CInput, FileLine, '\n'))
{
FileData += FileLine + '\n'; // The line plus the consumed delimeter
}
>> Isn't actually any better either.
It's a little better. Last time I checked, controlling the loop with eof() works when you are using getline. The only bad part is that it doesn't check for stream errors. Switching to while (!CInput) does that.
I do agree that your version is the best, though, even if only for consistency.
I agree with you. Had it been an iostream function, I would have controlled the loop with it, but the truth is I wasn't sure of the return on the std::getline() function. So I figured better safe the sorry.Quote:
Originally Posted by Salem