Make a database program using C

My program should have at least the following functions:
1.Add new website
2.Delete existing website.
3.Let user retrieve or modify the information in the database.
4.List website in alphabetical order.
5.List all the website in the database.
6.Store and retrieve the inforamtion in the database file.
7.Provide keyword search in database.
8.List the website in reverse order.

This program are required to use C as the programming language.