Reading a file into an array

[nukes]

Right, for the next stage of my project, I'm going to need some sort of map system. My plan was to use an array of Uint8 (Unsigned, 8 bit integers - an extra type provided by the SDL library)
If I define it in a class, like this:

class world {
public:
Uint8 map[200][200]; };

How would I read/write the data to/from a file on disk? Should I use low-level file-managment stuff or high-level? What sort of things do I need to do?
I'm just starting really with C++ and I'm not sure how I should handle something like this. I've done file IO in stuff like basic and pascal, but I can see from what I've read that this is going to be 100x harder.
Any points on where to start, or what I need to do?

[strangerstill]

Er... read the chapter on file I/O.

If you haven't got time for that, read the manual pages on open, write, read, and close. If Uint8 is a scalar type then write( fd, map, 200*200*sizeof Uint8 ) would be sufficient; otherwise you'll need to serialize the data in some way.

[nukes]

Thanks. I am in your debt. I have a format worked out, and I have read the chapter on file I/O. Its just that it was a C book, and the C++ (fstreams.h) seems a hell of a lot nicer. I can just send it byte by byte and then read it in using the reverse routine. now I just have to spend some time drawing out the tiles, making a level editor, writing the loader routine and then make some levels for it. cheers.