opening files with strings for file names

veilig · 11-10-2003, 10:47 AM

alright, I have 2 strings, I appended the second string the first string and now I want open a file which is the first strings name

s1 = myfile.
s2 = 2

s1+=s2
s1 is now myfile.2

how can I use s1 to open that file?

when I type:
fstream Fin( s1, ios::in );

I'm getting errors that I can't do this with the string as the file name.

any ideas?

LogicG8 · 11-10-2003, 10:54 AM

Well you are using the string library correct?

fstream I believe expects a character array.
try the s1.c_str() method

veilig · 11-10-2003, 11:05 AM

yeah I am using the string library,

I tried using

fstream Fin( s1.c_str(), ios::in );

like you suggested...and it compiled, but my
if ( ! Fin )...

error checking, get spitting out my error message, so it seems like it's still not opening?

veilig · 11-10-2003, 11:05 AM

got it to work, thanks

LogicG8 · 11-10-2003, 11:19 AM

Glad you got it to work,
but next time you are having a
problem I have some advice

Put more detail in the post
like what language, and libraries you are using.
variable declarations are also helpful.
My advice was just a guess at what could be wrong.