design software using HAL

When I use the nios2 IDE for my software,for example:I use the printf() function,ok ,it work well.

now the problem is that am I now using the HAL system already???

I think I have used the HAL when I use the standard C function,am I right?

or I have to do something else if I want to use it???

thanks in advance!!! http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/tongue.gif