Saving and loading is done via writing and reading files. Take a look at the File Functions for reference. A basic outline is:

void save( ) {

    int f = FileOpen("save.dat", 2);

    FileWriteQuad(f, hitPoints);

    FileWriteQuad(f, xPosition);

    FileWriteString(f, curmap.path);

    // etc... write everything you want to save

    FileClose(f);

}



void load() {

    int f  = FileOpen("save.dat", 1);

    hitPoints = FileReadQuad(f);

    xPosition = FileReadQuad(f);

    string map = FileReadString(f);

    // etc... load back all that stuff in the same order

    FileClose(f);

    Map(map);

}

Or something like that. Anyone have a good example of this in action? (that isn't as large as sully?)

Just want to add that, when you write your save/load code, you should think ahead as much as possible about what saveable variables your game will need. When you introduce a new variable, you want it to already be taken into account in the saving/loading functions. If it isn't, then you're going have a problem trying to load previous save files, and most likely you'll have to start at the beginning of the game just to have a compatible save file. For example, my game has had "airshipx" and "airshipy" variables saved and loaded since I started the game, but they haven't been used for anything yet, and won't be for quite a while still. But when I need it, I won't have to restart my game (which could take a long time).