a doubt in files

i have a doubt.... please help........
consider a class (say item).... i write 10 objects of item into a file using write() function.....
how to delete a middle object(say 6th one) and join the 5th and 7th one?.....

You copy all the records you want to keep to a new file.
Then delete the old file, and rename the new file.

thank u ...mr.salem.... please dont get irritated on seeing my following question.... since i am a novice to c++, i tend to ask this question....

how to delete a file completely? is it enough to over write the same file using write() fn with argument ios::out | ios::trunc ?
please answer......

remove - C++ Reference

thank u very much.....