Phone Book Program

This program is made by C language, with the use of linked list data structre and file handling.
Functions of this program are:
(+) Add contact
(+) Delete contact
(+) List a/all contact/s
(+) Edit a contact's information

By default, the data will be saved in your computer if you quit the program by entering (q). If you force stop the program, data won't be saved.
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If you have any ideas about the project let me know.