KL UNIVERSITY

FRESHMAN ENGINEERING DEPARTMENT

A Project Based Lab Report On

MINI-TELEPHONE DIRECTORY
SUBMITTED BY:

2400030408 GANUGULA VISHNU

2400030568 NIPPULETI SIVA NAGA RAJU

2400030935 PEPETI HEMNANTH KUMAR

2400031059 SURAPUREDDY SAI CHARAN

UNDER THE ESTEEMED GUIDANCE OF

Mr. BELLAM SURENDRA BABU

Assistant Professor

KL UNIVERSITY
Green fields, Vaddeswaram – 522 502
Guntur Dt., AP, India.

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 DEPARTMENT OF BASIC ENGINEERING SCIENCES

CERTIFICATE

This is to certify that the project based laboratory report entitled

“Mini - Telephone Directory” submitted by Ganugula Vishnu, NIPPULETI SIVA
NAGA RAJU, PEPETI HEMNANTH KUMAR, SURAPUREDDY SAI CHARAN bearing
Regd. No. 2400030408, 2400030568, 2400030935, 2400031059 to the
Department of Basic Engineering Sciences, KL University in partial
fulfillment of the requirements for the completion of a project in
“Computational Thinking for Object Oriented Design
- 22SC1203” course in I B Tech II Semester, is a bonafide record of the work
carried out by him/her under my supervision during the academic year 2020-21.

PROJECT SUPERVISOR HEAD OF THE DEPARTMENT

Mr. R. Krupadanam Dr. D. Haritha

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 ACKNOWLEDGEMENTS

It is great pleasure for me to express my gratitude to our honorable President

Sri. Koneru Satyanarayana, for giving the opportunity and platform with facilities in
accomplishing the project-based laboratory report.

I express the sincere gratitude to our director Dr. A Jagadeesh for his
administration towards our academic growth.

I express sincere gratitude to our Coordinator Dr. V. Krishna Reddy and

HOD- BES Dr. D. Haritha for her leadership and constant motivation provided in
successful completion of our academic semester. I record it as my privilege to deeply
thank for providing us the efficient faculty and facilities to make our ideas into reality.

I express my sincere thanks to our project supervisor <name> for his/her novel
association of ideas, encouragement, appreciation, and intellectual zeal which
motivated us to venture this project successfully.

Finally, it is pleased to acknowledge the indebtedness to all those who devoted

themselves directly or indirectly to make this project report success.

Project Associates…..

2400030408 GANUGULA VISHNU

2400030568 NIPPULETI SIVA NAGA RAJU

2400030935 PEPETI HEMNANTH KUMAR

2400031059 SURAPUREDDY SAI CHARAN

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 ABSTRACT

A Mini-Telephone Directory is a compact, organized listing of contact

information, commonly including names, phone numbers, and other essential
details like email addresses, physical addresses, relationships, and additional
notes. It serves as a quick and efficient tool for managing contact details within
small groups, communities, or organizations. This directory is often used for
personal, business, or administrative purposes where access to vital contact
information is necessary.

In its simplest form, the Mini-Telephone Directory can be created as a physical

list, a digital document (such as a spreadsheet), or an advanced database system.
Each contact entry typically includes the name of the individual or business,
their phone number(s), and optional fields such as email addresses, addresses,
relationships, and specific notes about the contact. The directory can be
organized alphabetically or according to specific categories depending on the
use case.

The digital version of the directory offers advantages such as easy updates,
searchability, and the ability to store vast amounts of data. It can be
implemented using various technologies, from basic spreadsheets to custom
software applications built with programming languages like Python,
JavaScript, or database systems like SQL.

A well-maintained Mini-Telephone Directory improves accessibility, facilitates

communication, and can be a valuable resource for quickly retrieving contact
information for a wide variety of personal and professional purposes.

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 INDEX

S.NO TITLE PAGE NO

1 Introduction <6>

2 Aim of the Project <7>

2.1 Advantages & Disadvantages <8-9>

2.2 Future Implementation <10>

2.3 Software & Hardware Details <11>

3 Algorithm <12>

4 Flowchart <13>

5 Implementation <14-21>

6 Outputs/ScreenShots <22>

7 Conclusion <23>

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 INTRODUCTION

In today’s fast-paced world, managing and organizing contact information

efficiently has become increasingly important. A Mini-Telephone Directory is
a compact solution that allows individuals, businesses, or organizations to
maintain a quick reference of essential contact details in a structured and easy-
to-use format. Whether for personal use, small businesses, or community
organizations, such directories provide a convenient means of storing critical
information like phone numbers, addresses, emails, and more.

At its core, a Mini-Telephone Directory serves the purpose of streamlining

communication by ensuring that all relevant contact data is readily accessible.
This directory is typically much smaller in scale compared to larger, more
comprehensive phone books or contact databases, focusing on a specific set of
individuals or entities. It may include basic fields such as name, phone number,
email address, physical address, relationship, and additional notes.

Mini-Telephone Directories can be created and maintained in various formats-

physical, digital, or online. In a physical format, they may be printed out on
paper and stored in a binder or notebook. Digital formats, such as spreadsheets
or contact management software, offer more flexibility by allowing for easy
updates, searching, and organization. On a larger scale, some may use database
systems to store and manage thousands of contacts, providing advanced features
like automatic sorting, searching, and even integration with other systems like
customer relationship management (CRM) tools.

This directory is particularly useful in small communities, local businesses, or

as a personal tool for anyone who wants to keep track of essential contacts
without the complexity of larger systems. It enables users to quickly find and
communicate with the people or organizations they need to reach, making it an
indispensable tool in everyday life.

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 AIM OF THE PROJECT

AIM:

The aim of a Mini-Telephone Directory is to offer a simple and efficient

solution for organizing and managing contact information in a compact format.
It ensures that essential details such as phone numbers, email addresses, and
physical addresses are easily accessible, facilitating quick communication. The
directory aims to be flexible, allowing users to create and maintain their contact
lists in physical, digital, or online formats. By streamlining contact
management, it simplifies communication for individuals, small businesses, and
communities. The ultimate goal is to provide an organized tool that enhances
connectivity while minimizing complexity.

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 Advantages: Mini-Telephone Directory

1. Ease of Access: A Mini-Telephone Directory allows quick access to

essential contact information, reducing the time spent searching for
phone numbers or addresses.

2. Organization: It helps in organizing contacts in a systematic way, making

it easier to update and maintain information.

3. Compactness: Unlike large databases or phone books, a Mini-Telephone

Directory is small and focused, making it ideal for personal use or small-
scale environments.

4. Flexibility: It can be created in various formats—physical, digital, or

online—allowing users to choose the method that best fits their
needs.

5. Improved Communication: By centralizing contact details in one place,

it facilitates better communication, whether for personal, business, or
community purposes.

6. Portability: A digital or physical directory is easy to carry and can be

accessed on-the-go, ensuring contacts are always available when
needed.

7. Customization: It can be customized to suit the user’s needs, such

as adding additional fields for notes, relationships, or preferred
contact times.

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 Disadvantages: Mini-Telephone Directory

1. Limited Coverage: It only contains contact information for a small,

specific group, making it less comprehensive than larger directories.

2. Outdated Information: Printed versions may quickly become

outdated if not regularly updated, leading to incorrect details.

3. Privacy Concerns: Personal information may be exposed if the

directory is misplaced or accessed by unauthorized people.

4. Manual Searching: Printed directories lack search features,

requiring users to manually browse through the list.

5. Risk of Damage or Loss: Physical copies can be easily lost or

damaged, resulting in the loss of valuable contact information.

6. Environmental Impact: Printed directories contribute to paper waste

and resource consumption.

7. Limited Customization: Printed versions are not easily

customizable to meet specific user needs or preferences.

8. No Real-Time Updates: Unlike digital versions, printed directories

cannot be updated immediately, making them less flexible.

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Future implementations: mini telephone directory

1. Integration with Cloud Services: Allow users to sync their directory with
cloud storage for easy access and backup across multiple devices.

2. Voice Recognition: Implement voice commands to search, add, or delete

contacts, making it more user-friendly.

3. AI-Powered Suggestions: Use AI to suggest frequently contacted numbers

or categorize contacts based on user behavior.

4. Enhanced Security: Add features like biometric authentication (fingerprint

or facial recognition) to protect sensitive contact information.

5. Multimedia Integration: Enable users to attach photos, notes, or even short

audio clips to each contact for a richer experience.

6. Cross-Platform Compatibility: Develop apps for various platforms

(Windows, Android, iOS) to ensure seamless usage.

7. Smart Search: Introduce advanced search options, such as searching by

partial names, locations, or tags.

8. Emergency Features: Include a one-tap emergency contact feature for

quick access during critical situations.

9. Localization: Support multiple languages and regional formats to cater to a

diverse user base.

10.Integration with Social Media: Link contacts with their social media
profiles for real-time updates and communication.

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 SYSTEM REQUIREMENTS

 SOFTWARE REQUIREMENTS:
The major software requirements of the project are as
follows: Language : C Language
Operating system : Windows
Tools : Dev-C++

 HARDWARE REQUIREMENTS:

The hardware requirements that map towards the software are as follows:

RAM : 8 GB.

Processor : Intel i5 or higher.

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 Flowchart

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 ALGORITHM

STEP-1:Start

STEP-2:Initialize Define constants for max contacts, name length, and phone
number length .Create a Contact structure to hold name and phone number.

STEP-3:Open file directory.dat to load contacts.Read the number of contacts and

their details from the file and Close the file.

STEP-4:Display menu with options: Add, Search, Display, Delete, Save,

Exit. STEP-5:Read user input for choice and execute corresponding function.

STEP-6:Check if the directory is full.Prompt user for name and phone number,
then store the contact.

STEP-7:Prompt user for a name to search,Loop through contacts, print matching

results.

STEP-8:Print all contacts if directory is not empty.

STEP-9:Show all contacts and prompt user for an index.Remove selected contact
and shift others.

STEP-10Save Contacts,Write current contacts to directory.dat

file. STEP-11: Exit Program,Exit the loop and terminate the

program.

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 IMPLEMENTATION

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define MAX_CONTACTS 100

#define NAME_LENGTH 50

#define PHONE_LENGTH 15

typedef struct {

char name[NAME_LENGTH];

char phoneNumber[PHONE_LENGTH];

} Contact;

Contact directory[MAX_CONTACTS];

int contactCount = 0;

void addContact();

void searchContact();

void displayAllContacts();

void deleteContact();

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 void saveToFile();

void loadFromFile();

void displayMenu();

int main()

{ int

choice;

loadFromFile();

do {

displayMenu();

printf("Enter your choice: ");

scanf("%d", &choice);

while(getchar() != '\n');

switch(choice) {

case 1:

addContact();

break;

case 2:

searchContact();

break;

case 3:

displayAllContacts();

break;

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 case 4:

deleteContact();

break;

case 5:

saveToFile();

printf("Contacts saved to file.\n");

break;

case 6:

printf("Exiting program. Goodbye!\n");

break;

default:

printf("Invalid choice. Please try again.\n");

printf("\n");

} while(choice != 6);

return 0;

void displayMenu() {

printf("\n===== MINI TELEPHONE DIRECTORY =====\n");

printf("1. Add Contact\n");

printf("2. Search Contact\n");

printf("3. Display All Contacts\n");

printf("4. Delete Contact\n");

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 printf("5. Save Contacts to File\n");

printf("6. Exit\n");

void addContact() {

if(contactCount >= MAX_CONTACTS) {

printf("Directory is full. Cannot add more contacts.\n");

return;

Contact newContact;

printf("Enter name: ");

scanf("%49s", newContact.name);

printf("Enter phone number: ");

scanf("%14s", newContact.phoneNumber);

directory[contactCount++] = newContact;

printf("Contact added successfully!\n");

void searchContact() {

char searchName[NAME_LENGTH];

int found = 0, i;

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 printf("Enter name to search: ");

scanf("%49s", searchName);

printf("\nSearch Results:\n");

printf(“____________\n");

for(i = 0; i < contactCount; i++)

if(strstr(directory[i].name, searchName) != NULL) {

printf("Name: %s\n", directory[i].name);

printf("Phone: %s\n",

directory[i].phoneNumber); printf("\n");

found = 1;

if(!found) {

printf("No matching contacts found.\n");

}
void displayAllContacts()

{ int i;

if(contactCount == 0) {

printf("The directory is empty.\n");

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 return;

printf("\nAll Contacts:\n");

printf(“___________\n”);

for(i = 0; i < contactCount; i++)

printf("%d. Name: %s\n", i+1, directory[i].name);

printf(" Phone: %s\n", directory[i].phoneNumber);

printf(" \n");

}
void deleteContact()

{ int index, i;

if(contactCount == 0) {

printf("The directory is empty.\n");

return;

displayAllContacts();

printf("Enter the number of the contact to delete:

"); scanf("%d", &index);

if(index < 1 || index > contactCount)

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 { printf("Invalid contact number.\

n"); return;

index--;

for(i = index; i < contactCount - 1; i++) {

directory[i] = directory[i + 1];
}
contactCount--;

printf("Contact deleted successfully!\n");

void saveToFile() {

FILE *file = fopen("directory.dat", "wb");

if(file == NULL) {

printf("Error opening file for writing.\n");

return;

fwrite(&contactCount, sizeof(int), 1, file);

fwrite(directory, sizeof(Contact), contactCount, file);

fclose(file);

void loadFromFile() {

FILE *file = fopen("directory.dat", "rb");

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 if(file == NULL) {

return;

fread(&contactCount, sizeof(int), 1, file);

fread(directory, sizeof(Contact), contactCount,files);

fclose(file);

printf("Loaded %d contacts from file.\n", contactCount);

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INTEGRATED AND SYSTEM TESTING OUTPUTS

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 CONCLUSION

The Mini Telephone Directory program offers a simple yet effective solution for
managing personal contact information, allowing users to easily store, search,
display, and delete contacts. With its core features, such as adding contacts with
names and phone numbers, searching for contacts based on name, and
displaying the entire list of contacts, the program provides a user-friendly
interface for managing a small contact database. Additionally, the option to
delete contacts and save the directory to a file ensures that users can maintain
and update their contact list efficiently.

Overall, this program serves as an excellent starting point for anyone looking to
build a telephone directory application. It demonstrates how to handle
fundamental operations like adding, searching, deleting, and saving data, all of
which are core aspects of any contact management system. With potential for
expansion, the Mini Telephone Directory provides a solid base for future
development, offering a practical and efficient way to manage contact
information.

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