INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Member Login

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips now!

Talk With Other Members
Be Notified Of Responses
To Your Posts
Keyword Search
One-Click Access To Your
Favorite Forums
Automated Signatures
On Your Posts
Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

LINK TO THIS FORUM!

Tek-Tips LinkedIn^® Group

Join our
LinkedIn^® Group!

Hook up with past and present colleagues and classmates quickly.

Partner With Us!

"Best Of Breed" Forums Add Stickiness To Your Site

(Download This Button Today!)

Feedback

"...Thank you. It's already helped me greatly, and I enjoy just reading the inputs from the other members..."

More...

Geography

Where in the world do Tek-Tips members come from?

Click Here To Find Out!

Tek-Tips Shirts!

Get your
Tek-Tips Forums
SWAG here!

Home > Forums > Programmers > Languages > C++: Microsoft Forum

Strange problem with ostringstream

CODE

std::ostringstream oss;
oss << "??/??/??";
std::string date = oss.str();
std::cout << date.c_str();

I get \??
If I try

CODE

oss << "??/";

I get a warning about a newline

xwb (Programmer)

13 Aug 09 3:09

Happens with iostream as well

CODE

#include <iostream>
int main ()
{
std::cout << "??/??/??" << std::endl;
return 0;
}

Looks like the / is some sort of regular expression search character. To get the result I want, I have to change it to

CODE

#include <iostream>
int main ()
{
std::cout << "??\/??\/??" << std::endl;
return 0;
}

xwb (Programmer)

13 Aug 09 17:54

Actually that gives warnings, changed to

CODE

#include <iostream>
int main ()
{
std::cout << "?\?/?\?/??" << std::endl;
return 0;
}

uolj (Programmer)

13 Aug 09 18:53

It's a trigraph: http://en.wikipedia.org/wiki/Digraphs_and_trigraphs

Scroll down to Language Support > C to see why ??/ isn't allowed in C and C++ files.

xwb (Programmer)

14 Aug 09 8:51

Yet another thing I didn't know about C after using it for 25 years!

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Back To Forum

Back To C++: Microsoft

Member Login

Come Join Us!

LINK TO THIS FORUM!

Tek-Tips LinkedIn® Group

Partner With Us!

Feedback

Geography

Tek-Tips Shirts!

Strange problem with ostringstream

CODE

CODE

CODE

CODE

CODE

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Back To Forum

Join Tek-Tips® Today!

Tek-Tips LinkedIn^® Group

Join Tek-Tips^® Today!