cbse computer science project

8/13/2019 cbse computer science project

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TELEPHONE DIRECTORY

PROJECT BY:

PRAVEEN P.

CLASS: XII


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ACKNOWLEDGEMENT

I take this opportunity to express my profound sense of gratitude andrespect to all those who helped me throughout this venture.

I owe my regard to Mrs. Sri Vidhya Mouli, Principal of TVScademy , for her cooperation and valua!le support and for givingme the opportunity to undertake this pro"ect work and providing thenecessary infrastructure.

I would like to express my heartfelt thanks to my revered teacher andguide Mrs. #ithya marnaath for her valua!le guidance,encouragement and support throughout my studentship under her atthe institute. This pro"ect is her visuali$ation and owes a lot of itsfunctionality to her.

%ast !ut not the least& I owe my overwhelming gratitude to my familyand friends who gave me constant support and motivation tocontinue with this 'ndeavour.


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CONTENTS:

System description at a glance

Pro!lem (escription

o )e*uirement nalysis

o +ardware and Software re*uirements

System specification

o System (esign

o (ata (esign

o rchitectural (esign

o (ata (ictionary

ile (esign Structures

Procedure-unction (escription

Program Source ode


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System Desc!"t!#$ %t % G&%$ce

TELEPHONE DIRECTORYis a listing of telephone su!scri!ers in a geographical area

or su!scri!ers to services provided !y the organi$ation that pu!lishes the directory. Its

purpose is to allow the telephone num!er of a su!scri!er identified !y name.

My aim is to develop a computer program to ensurethat theentries in the telephone

directory is kept track and data is easy to access.

iles/

There is a file for recording the details such as name and phone num!er of all the customers.

I$"'ts %e:

To add new records to the data!ase

To delete a record 0uthorised cess1

To modify the details of an individual record 0uthorised cess1

O't"'ts %e:

To show the phone num!er for a re*uested name

To show the name for a re*uested phone num!er

To list the names and phone num!er of all the entry


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P#(&em Desc!"t!#$

Re)'!eme$t A$%&ys!s:

2e have studied the existing system in detail. The finding of our study yields various pieces of

information which are descri!ed in the following manner. or keeping track of the phonenum!ers, we enter the following details/

#ame

Phone num!er

REQUIRED OUTPUT OF THE SYSTEM:

The computeri$ed system generates the following reports as/

To show the entered details of a name

To show the phone num!er of the re*uested person

To list all the entries

To show the details of all the entries after the re*uired modifications are made.

HARDWARE AND SOFTWARE REQUIREMENTS:

ssuming that a general system offers entry of a!out 3444s in num!er, the volume of the

information to !e handled is a!out thousands of characters. ll this suggests that the choice of

a computer 567 or e*uivalent to a!out 894 M: +ard (isk and a!out 6 to 37 ;: )M. The

availa!ility of sophisticated programming tool is imperative. Thus,


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System s"ec!*!c%t!#$s

System +es!,$-te /e$e& #* system e$,!$ee!$,

The importance of software design can !e stated with a single word *uality. (esign is the place

where *uality is fostered in software development. (esign provides us with representations ofsoftware that can !e accessed for *uality. System design serves as the foundation for all

software engineering and maintenance steps that follow. (esign sits at the technical kernel of

the software engineering process and is applied regardless of the development paradigm that

is used. =nce software re*uirements have !een analy$ed and specified, the software design is

first of the three, technical activities > design, code and test that are re*uired to program the

software. The flow of information during this technical phase of the software engineering

process is illustrated in the given figure/


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D%t% Des!,$

(ata design is the first of the three design activities that are conducted during system

development. The impact of data structure on program structure and procedural complexity

leads data design to have a profound influence on systems *uality.

ll the data o!"ects re*uired !y this system are listed !elow/

1. Td.txt

#ame of entry>maximum of 84 characters

Phone num!er

Tempt.txt

Stores temporary values of name and phone num!er

The a!ove data can !e designed in the form of a relational data!ase with course name as the

key field.


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Ac!tect'%& Des!,$

System Des!,$ D!%,%m

Insert entries

Modify

(elete

(isplay

Search

name

using

Phone

Search

Phone

num!er

using name

uthenticated

ccess


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DATASTR0CT0RES

FILE DESIGN STRUCTURES

I%'/ ?td.txt?

N%me Wee 0se+ Desc!"t!#$

#ame

Phone

num!er

lass @Ph!ook?lso stored in file @td.txt?

har 84 characters

8 characters

pn To get phone num!er that needs to !esearched for the name

har >84characters

n To get name that needs to !e

searched for the phone num!er

To get name that needs to !e

modified

To get name that needs to !edeleted

har>84 character

passTo contain the password Int

inpass To get the password from the user Int

N%me Wee 0se+ Desc!"t!#$Phone num!er ile>To specify the phone

num!er of the individual entryhar>84characters

#ame ile>to specify the name of theentry

har>84 characters


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PROCED0RE120NCTION DESCRIPTION

Cla e!t"#: mem$e" %&!'t()!

N%me Ret'$ +%t%ty"e

P'"#se Desc!"t!#$

getdata01 Void function to get datafrom user

ccepts values from user 0#ame and phonenum!er1

putdata01 Void function to show dataon screen

(isplays the details 0no input re*uired1

modify01 Void function to get newdata from user

sks whether the old details are re*uiredand needs input of the new details of the

modified entry detailsgetname01 char function to return type

of entryAs nameccessor function to return the name ofentry

N)!*mem$e" %&!'t()!:)&t(de 'la de%(!(t()!

N%me Ret'$ +%t% ty"e P'"#sewriteBentry01 void function to write record in !inary file

displayall01 void function to all display phonenum!er given !y user

search!yBpho01 void function to search name !y givenphone num!er

search!yBname01 void function to search phone num!er!y given name

delete01 void function to delete a record

update01 void function to update a given record !ygetting the customer name


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SO0RCE CODE:

CincludeDiostream.hE

CincludeDfstream.hECincludeDconio.hE

CincludeDstdio.hE

CincludeDstring.hE

class ph!ook

F

pu!lic/

char nameG84H,phnoG84H&

void getdata01

F

coutDD'nter #ame/ DDJn&

cinEEname&

coutDD'nter Phone #o/ DDJn&

cinEEphno&

K

void putdata01

F

coutDD#ame/ DDnameDDJn&

coutDDPhone #o/ DDphnoDDJn&

K

charL getname01

F

return name&

K

void modify01

F

char nmG84H,phG84H&

coutDD#ame/ /DDname&


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coutDDJnPhone no/ DDphno&

coutDDJn'nter new detailsJn&

coutDD#ew #ame/ 0'nter . to retain old values1&

cinEEnm&

coutDD#ew Phone no/ 0'nter . to retain old values1&

cinEEph&

if0strcmp0nm,.1NO41

strcpy0name,nm1&

if0strcmp0ph,.1NO41

strcpy0phno,ph1&

K

Ka,!&

void insert01

F

fstream f&

f.open0td.txt,ios//inios//outios//ateios//!inary1&

a.getdata01&

f.write00char L1 Qa,si$eof0a11&

f.clear01&

f.flush01&

K

void displayall01

F

fstream f&


f.seekg041&

while0f1

F

f.read00char L1 Qa,si$eof0a11&

if0Nf.eof011


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a.putdata01&

K

f.clear01&

f.flush01&

getch01&

K

void search!yBpho01

F

int pnoO4&

char pnG84H&

fstream f&


coutDD'nter Phone num!er/&

cinEEpn&

f.seekg041&

while0f.read00char L1 Qa,si$eof0a111

F

if0Nstrcmp0a.phno,pn11

F

a.putdata01&

pnoO3&

K

K

if0pnoOO41

coutDD#o Such )ecord 'xistsNNNN&

f.close01&

getch01&

K

void search!yBname01


14/19

F

int naO4&

char nG84H&

fstream f&


coutDDJn'nter #ame/&

cinEEn&

f.seekg041&

while0f1

F


if0strcmp0a.name,n1OO41

a.putdata01&

naO3&

K

f.clear01&

if0naOO41

coutDD)ecord #ot ound&

getch01&

K

void deleteentry01

F

fstream f&

f.open0td.txt,ios//inios//!inary1&

fstream f3&

f3.open0temp.txt,ios//out1&

char foundOf,nG84H&

coutDD'nter name whose record is to !e deletedJn&

cinEEn&

f.seekg041&


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while0f1

F


if0strcmp0a.getname01,n1OO41

foundOt&

else

f3.write00char L1 Qa,si$eof0a11&

K

if0foundOOf1

coutDD)ecord not foundNNNJn&

f.close01&

f3.close01&

remove0td.txt1&

rename0temp.txt,td.txt1&

coutDD#ow the file contains/&

displayall01&

K

void update01

F

fstream f&


int pos&

char foundOf,nG84H&

coutDD'nter name whose record is to !e modifiedJn&

cinEEn&

f.seekg041&

while0f1

F

posOf.tellg01&



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if0strcmp0a.getname01,n1OO41

F

a.modify01&

f.seekg0pos1&

f.write00char L1 Qa,si$eof0a11&

foundOt&

!reak&

K

K

if0foundOOf1

coutDD)ecord not foundNNNJn&

coutDDJn#ow the file containsJn&

f.clear01&

displayall01&

K

void main01

F

char pnG84H,nG84H&

int c,pnoO4,naO4,passO38R59,inpass&

fstream f&


char chOy&

coutDDJnJnJnJnJnJnJnJnJtJt2'%=M' T= T'%'P+=#' (I)'T=) S')VI'SJnJnJn&

coutDDJtJtPress 'nter to ontinue...&

getch01&

while0chOOy1

F

clrscr01&


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coutDDJnJnJtJt2'%=M' T= T'%'P+=#' (I)'T=) S')VI'SJnJnJn&

coutDDJtJt3. 'nter recordJn&

coutDDJtJt8. (isplay all recordsJn&

coutDDJtJtR. Search Ph noJn&

coutDDJtJt5. Search #ameJn&

coutDDJtJt9. pdate recordJn&

coutDDJtJt7. (elete recordJn&

coutDDJtJtU. 'xitJnJnJn&

coutDDJtJt'nter your choiceJn&

cinEEc&

switch 0c1

F

case 3/

F

insert01&

!reak&

K

case 8/

F

displayall01&

!reak&

K

case R/

F

search!yBpho01&

!reak&

K

case 5/

F

search!yBname01&


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!reak&

K

case 9/

F

coutDDJtJt PasswordJnJtJt&

cinEEinpass&

if0passOOinpass1

update01&

else

F

coutDDJtJt2rong Password&

!reak&

K

K

case 7/

F

coutDDJtJt'nter PasswordJnJtJt&

cinEEinpass&

if0passOOinpass1

deleteentry01&

else

F

coutDDJtJt2rong Password&

!reak&

K

K

case U/

chOn&

f.clear01&

f.flush01&


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!reak&

K

K

K

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cbse computer science project