Using binary files as database?

[Creqaw]

Ok, let's rephrase that cause after reading what I typed it didn't really made sense...

I want to save character info (yes, it's for a game)

With ini files the file has a structure like this:

[Username]
Password= something
Security=Stuff
email=mail
Character profession= prof
level=char level
hit points= hp
skills= skills char has
items= char's items
etc.

Which makes it easy to load/save and serves as a easy editable database.

But I want to use binary files instead of ini files (cause I read that binary files were faster with loading)
But I just can't seem to correctly save or read the files...




Original post:

So I'm trying to code something that saves/reads accounts in binary files but since this is the first time ever that I tried to do something with binary files, I'm kinda stuck.
_____

So let's say that I want to save/read:

Example.dat (where Example is the username)
Password
e-mail
security Q/A

How would I do that?