stl::fstream O_RDWR | O_CREAT

[Luther Baker]

Hi,

Which ios_base flags does one use to open an fstream for

std::ios::out | std::ios::in | (create if necessary)

I do NOT necessarily want to truncate or append to the file.

I realize I can do it in two steps by checking the state of the file
stream after trying to open it, but I wanted to be sure I was not
missing a flag like O_RDWR | O_CREAT.

Thanks,

-Luther

[John Harrison]

"Luther Baker" <lu*********@yahoo.com> wrote in message
news:46**************************@posting.google.c om...

Hi,

Which ios_base flags does one use to open an fstream for

std::ios::out | std::ios::in | (create if necessary)

I do NOT necessarily want to truncate or append to the file.

I realize I can do it in two steps by checking the state of the file
stream after trying to open it, but I wanted to be sure I was not
missing a flag like O_RDWR | O_CREAT.

This question was asked recently, see the thread 'fstream..' by dumboo. The
short answer is do it in two steps.

john

[Luther Baker]

"John Harrison" <jo*************@hotmail.com> wrote in message news:<2h************@uni-berlin.de>...

"Luther Baker" <lu*********@yahoo.com> wrote in message
news:46**************************@posting.google.c om... ....
This question was asked recently, see the thread 'fstream..' by dumboo. The
short answer is do it in two steps.

Thanks John,

-Luther