PHONE BOOK

1. Project Overview:
   • You are building a software application in C language.
   • The main functionalities include adding, deleting, updating, and searching phone numbers.
   • You’ll be using file handling to store and manage the phone numbers.
2. Functionality Descriptions:
   • Add Phone Number:
     • This function allows the user to input a new phone number along with a name or contact details.
     • The program should validate the input (e.g., check for valid phone number format).
     • The new entry should be appended to the existing phone book file.
     • Consider handling duplicate entries or ensuring uniqueness.
   • Delete Phone Number:
     • The user provides a phone number or name to delete.
     • The program searches for the entry in the phone book file.
     • If found, it removes the entry.
     • Handle cases where the entry doesn’t exist.
   • Update Phone Number:
     • Similar to deletion, the user specifies a phone number or name.
     • The program searches for the entry.
     • If found, it allows the user to update the contact details (e.g., change the name or number).
   • Search Phone Number:
     • The user enters a phone number or name to search for.
     • The program looks up the entry in the phone book file.
     • Display the contact details if found; otherwise, indicate that the entry doesn’t exist.
3. File Handling:
   • You’ll create a text file (e.g., phonebook.txt) to store the phone numbers.
   • Use file I/O functions (fopen, fprintf, fscanf, fclose) to read and write data.

• Consider error handling (e.g., file not found, permissions).

Download : C++ Software

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