change the default separator in stream operator ">>" ?!?!?

[Francesco]

Hi,

I've a question...
is it possible to change the default separator in the stream operator ">>"
(for example from the blank space " " to the comma "," ) ?
Here is an example...

I want to read a sequence separated by blank space. I can do like
this...(with cin, but with file is the same thing)

2003/08/15 25 26 24.23232323
----------------------------------------
std::string data;
int val1, val2;
float r1;

std::cout << "Insert data: ";
std::cin >> name >> val1 >> val2 >> r1;
------------------------------------------

But if I've comma separated values like....????

2003/08/15,25,26,24.23232323

I know that I can use the getline where it's possible to select the
separator, but my question is only about the ">>".
With all values different from char or string I can di something like
this...

char c;
cin >> val1 >> c >> val2 >> c >> r1;

but with a string.... I don't know.
Thanks for your opinions,
Ciao, Checco.

 

[Jerry Coffin]

Hi,

I've a question...
is it possible to change the default separator in the stream operator ">>"
(for example from the blank space " " to the comma "," ) ?

http://www.google.com/groups?selm=MPG.1949ebedb209ceaa989a43%
40news.clspco.adelphia.net

 

[Francesco]

http://www.google.com/[email protected]

Thanks,
even if with my current C++ knowledge is hard for me to understand

I've thought there was something easier, I think I'll use the sstream and
the getline to tokenize the entire record as a string.

Thanks anyway.

Ciao, Checco

 

[tom_usenet]

Thanks,
even if with my current C++ knowledge is hard for me to understand

I've thought there was something easier, I think I'll use the sstream and
the getline to tokenize the entire record as a string.

Boost have a tokenizer class:

http://www.boost.org/libs/tokenizer/index.htm

Tom

 

[Francesco]

Boost have a tokenizer class:

http://www.boost.org/libs/tokenizer/index.htm

Tom

Yes, I know, but I need full portability and I must use only standard
library.
But it's not so hard to take tokens...

std::vector<std::string> scomponi(std::string str, char separatore)
{
// assegnamento della stringa al tipo stringstream std::stringstream
dati(str); std::string buff;
std::vector<std::string> ris;

// divisione in tokens
while (getline(dati, buff, separatore))
ris.push_back(buff);
return ris;
}

Thanks.
Ciao, Checco.