Determine available drives

is there any way to determine if there is a disk inserted in a drive( or is it a port ) [sorry for my poor english terms] like in E: or F:, etc.
i tried doing

Code:

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FILE *fp;
fp = fopen( "E:\\text.dbf", "w" );
if( fp = NULL );

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to test if i can create a file in a disk inserted in E:

Code:

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if( fp = NULL );

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Well that's not going to do much good unless include a code block after the if statement, and you're assigning, not comparing.
= means assign.
== means compare.

Also, are you looking for that specific file, or just to see if there's any drive even there?

EDIT: Oh hey, you're opening in "w" mode. Right, so check with your OS manufacturer as Salem suggests.

Clusty Search » win32 enumerate drives host:"microsoft.com"

Quote:

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Originally Posted by tabstop

Also, are you looking for that specific file, or just to see if there's any drive even there?

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just to see if there's any drive.

@cpjust
oh sorry. it was a typo. i meant == not =

*EDIT:
so how do i know if there's any drive inserted?