Inserting

are there any open/write functions for C , which do not overwrite chars in a file , but insert them ?

or do i have to write a shitty loop that just reads , stores and writes a char ?

also discuss file and string handling libraries because most that i have seen suck .

>>6
If you'd like to learn more of this matter, look into filesystem designs. They do lots of work to make common file operations as efficient as possible.

Out of interest, why do you have to insert data in the middle of a file in the first place? I think that's quite rare (it's not a common operation in any case).