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#include

main(){

short ! y! ;

'' *+;

y &%;

$%;

;

cout

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this pro0ram store dou1le data type

and

si e of dou1le data type dou1le is 5 1yte (+ 1its 3indo3s operatin0 system)

-

#include

main(){

dou1le ! y! ;

&'$ +*.*+ +;

y &'6%5 .&' &;

&' &' .&' &; y ;

cout

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9peration:nput

- this pro0ram take di0it inte0er form user and sho3 the di0it on the screensperatly i.e. if user enter &' &! it display &! !'!& speratly -

#include

main(){

int user:nput! di0it;

coutuser:nput;

--$st one

di0it user:nput $%;

cout

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-- th

user:nput user:nput-$%;

di0it user:nput $%;

cout

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}

0essin08ame- /his is a 0ame! 3here user has to 0ess the hidden kep

and total try should less then *;

-

#include

main(){

int tryCum ;

char character;

do{

cout > character;

if(character 7 7){ cout

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0radeEcheck

-

pro0ram 0ets a 0rade from user and provide results accordin0ly

-

#include

main(){

char 0rade;

cout> 0rade;

--start of s3itch

s3itch(0rade) {

case 7F7=

case 7a7=

cout

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cout 0rade;

s3itch(0rade){

case 7F7=

case 7a7=

cout

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cout

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cout> a0e$;

cout> a0e&;

cout> a0e';

cout> a0e ;

cout> a0e*; cout> a0e+;

cout> a0eJ;

cout> a0e5;

cout> a0e6;

cout> a0e$%;

int totalF0es;

2oat avara0eF0e;

totalF0es a0e$ a0e& ;-- a0e' a0e a0e* a0e+ a0eJ a0e5 a0e6 a0e$%;

avara0eF0e totalF0es-&;

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cout

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@ec %6?ircleFrea,unction

dou1le circleFrea( dou1le radius ){

--value of pi is '.$ $*6&+

return ( '.$ $*6&+ radius radius);

}

#include

main(){

dou1le radius$! radius&! rin0Frea;

cout > radius$;

cout > radius&;

rin0Frea circleFrea (radius$) circleFrea (radius&);

cout

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int GvenAdd(int ); --function decleration! also kno3n as funtion prototype orsi0nature

#include

main(){

int num1er;

cout > num1er;

if(GvenAdd(num1er)){

cout

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}

function?alcul o3

dou1le return o3erCum(dou1le a! int 1){

dou1le result $.%;

int i;

for( i $; i< 1; i ){

result a;

}

return result;

}

#include

main(){

dou1le num1er;

int po3er;

cout > num1er;

cout > po3er;

--Co3! 3e 3ill pass num1er! and po3er varia1le to function return o3erCum

cout

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main(){

int input! result;

cout > input;

--callin0 sMuare function

result make9Muare(input);

cout

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@ec $%callHyLeOerence-

/his pro0ram chan0e value of from function 1co it is callin0 1y reference

"P" 3ith com1ination of varia1le name could used for this propes! like P

and in function " " could used like! mean 3hatever pointin0 to

-

void sMuare( dou1le ) {

;

-- cout

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@ec $$array#include

main(){

int cQ$%%R;

int ! i %;

do{

cout

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for(i $; i ;

int found %;

for(i $; i

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random num1er 0enerator

-

#include

#include

main(){

int a! i ;

int Q$%%R;

for(i %; i < $%; i ){

QiR rand(); cout

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int i;

for(i %; i < array9i e; i )

numQiR i;

}

studentEarray

#include

void student,unc(intQR! intQR);

main(){

int studentQ&R! numQ&R! i;

for( i %; i < '; i ){

cout > studentQiR;

cout > numQiR; }

student,unc(student! num);

}

void student,unc(int oneQR! int t3oQR){

int i ! total!;

for(i %; i < '; i ){

total oneQiR;

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--cout

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readNatri (a);

--display matri

displayNatri (a);

cout

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void displayNatri (int arrQRQma ?olsR){

int ro3! cols;

for(ro3 %; ro3 < ma Lo3; ro3 ){

for(cols %; cols

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void 0et:nput(dou1le salQRQ&R! int numGmps);

void calCet9al(dou1le salQRQ&R! int numGmps);

void KndTnluckies(dou1le salQRQ&R! int numGmps! int luckyQR);

void printTnlucky(int lucky! int numGmps);

void mark:fTnlucky(dou1le salQRQ&R! int numGmps! int luckyQR! int upperHound! intempC1r);

main(){

const int array9i e $%%;

dou1le salQarray9i eRQ&R;

int luckyQarray9i eR {%};

int numGmps;

-- Lead the actual num1er of employees in the company

cout > numGmps;

cout

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cout

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}else if(salQiRQ%R > $%%%% PP salQiRQ%R < &%%%%){

--te t deductation is $%

salQiRQ$R salQiRQ%R (.$% salQiRQ%R);

}else if(salQiRQ%R > &%%%%){

--te t deductation is $*

salQiRQ$R salQiRQ%R (.$* salQiRQ%R);

}else{

--Co need to do any thin0

}

}

}

void KndTnluckies(dou1le salQRQ&R! int numGmps! int luckyQR){

for(int i %; i < numGmps; i ){

if(salQiRQ%R > % PP salQiRQ%R< *%%%){

--Co need to do anythin0 in here

;

}else if(salQiRQ%R > *%%$ PP salQiRQ%R < $%%%%){

mark:fTnlucky(sal! numGmps! lucky! *%%$! i);

}else if(salQiRQ%R > $%%%% PP salQiRQ%R < &%%%%){

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mark:fTnlucky(sal! numGmps! lucky! $%%%$! i);

}else if(salQiRQ%R < &%%%$){

mark:fTnlucky (sal! numGmps! lucky! &%%%$! i);

}

}

}

void mark:fTnlucky(dou1le salQRQ&R! int numGmps! int luckyQR! int upperHound!

int empC1r){


-

9ee the if condition 1elo3! it 3ill mark the employee unlucky even if

an employee in the hi0her ta 1racket is 0ettin0 the same amount of net

salary as that of a person in lo3er ta 1racket.

-

if(salQiRQ%R < upperHound PP salQiRQ$R > salQempC1rRQ$R ){

luckyQempC1rR $; --employee marked as unlucky

1reak;

}

}

}

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void printTnluckies(int salQRQ&R! int luckyQR! int numGmps){


if(luckyQiR $){

cout

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main(){

int QR {$%! 6! 5! J! +! *! ! '! &! $};

int i! U! tmp! s3aps;

for(i %; i

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3hile( sptr S 7B%7){

if(islo3er( sptr)){

sptr toupper( sptr);

cout

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cout y;

ptr P ;

yptr Py;

if( ptr > yptr){

cout

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-- "B%" is neccessary to 3rite in the end of strin0! else array continusaly print0ar1a0e on screen

#include

main(){

char nameQ&%R;

char name/3oQ$%R "Fmir"; --here array autometicaly assi0ne "B%" in the end

nameQ%R 7a7;

nameQ$R 717;

nameQ&R 7c7;

nameQ'R 7Bn7;

for(int i %; i

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char strFQ5%R "F test for";

char strHQ5%R;

char ptrF; --a pointer to type character

char ptrH; --a pointer to type character

ptrF strF; --point ptrF at strin0 F

ptrH strH; --point ptrH at strin0 H

3hile( ptrF S 7B%7){

ptrH ptrF ; --copin0 character 1y character

}

ptrH 7B%7;

cout

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cout

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#include

#include

main(){

char KleCameQR "output.t t";

char t t/oWriteQR "Welcome to Iirtual Tniversity";

ofstream output,ile;

output,ile.open(KleCame! ios==out);

if(Soutput,ile){

cout

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KleWrite

#include

#include

main(){


char t t/oWriteQR "Welcome to Iirtual TniversityBn";


output,ile.open(KleCame! ios==app);

-

Fppend rather than truncate an e istin0 Kle. Gach insertion

(output) 3ill 1e 3ritten to the end of the Kle

-

if(Soutput,ile){

cout

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system("pause");

}

>> ate mode

Autput.t t

Welcome to Iirtual Tniversity

KleWrite

#include

#include

main(){




output,ile.open(KleCame! ios==ate);

-

ate rather than truncate an e istin0 Kle. Gach insertion


-

if(Soutput,ile){

cout

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}

output,ile > 0et func

Autput.t t

Welcome to Iirtual Tniversity

KleWrite

#include

#include

main(){




output,ile.open(KleCame! ios==ate);

-

ate rather than truncate an e istin0 Kle. Gach insertion


-

if(Soutput,ile){

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#include

#include

main(){

ifstream in,ile; --Xandle for the input Kle

char input,ileCameQR "test.t t";

const int NF E?XFLE/AELGF4 $'; --ma imum character to read in onr linrdirecotry

char complete@ine/e tQNF E?XFLE/AELGF4R; -- to 1e used in 0et@ine function

in,ile.open(input,ileCame); --openin0 the Kle

--checkin0 that Kle is successfuly opened or not

if(Sin,ile){

cout

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>> strtok

9alin.t t

Famir $&%%%

Fmara $*%%%

Fdnan $'%%%

Ff al $$*%%

9alout.t t

/he total salary *$*%%

strtoken

-

/his pro0ram reads name and salary from a t t Kle

?alculate the salaries and 3rite the total in an output Kle

-

#include

#include

#include

#include

main(){

ifstream in,ile; --Xandle for the input Kle

char input,ileCameQR "salin.t t"; --Kle name! this Kle is in the currentdirectory

ofstream out,ile; --handle for the output Kle

char output,ileCameQR "salout.t t"; --Kle name! this Kle is in the currentdirecotry

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const int NF E?XFLE/AELGF4 $%%; --ma imum character to read in oneline

char complete@ine/e tQNF E?XFLE/AELGF4R; --used in 0et@ine function

char token tr;

int salary! total9alary;

salary %;

total9alary %;

in,ile.open(input,ileCame); --Apenin0 the input Kle

out,ile.open(output,ileCame); --Apenin0 the output Kle

--?heckin0 that Kle is successfully opened or not

if(Sin,ile){

cout

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in,ile.0etline(complete@ine/e t! NF E?XFLE/AELGF4);

token tr strtok(complete@ine/e t! " "); --Krst token is name

token tr strtok(CT@@! " ");

salary atoi(token tr);

total9alary salary;

}

--3ritin0 the total into the output Kle

out,ile

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#include

#include

main(){

ofstream out("test.t t");

if(Sout){

cout

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int i;

2oat f;

ifstream in("test.t t");

if(Sin){

cout > f;

in >> ch;

-

Cote that 3hite space are 1ein0 i0nored! you can turn this of usin0unsetf(ios==skip3s);

-

cout

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B& Kle copy?opied.t t

Xello 3orld

,ile.t t

Xello 3orld

copy,ile

- ?ode snippet to copy the Kle Ythis,ileZ to the Kle Ythat,ileZ -

#include

#include

main(){

ifstream from,ile("Kle.t t");

if(Sfrom,ile){

cout

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cout

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-

/his is a sample pro0ram to determine the len0th of a Kle. /he pro0ram

accepts the name of the Kle as a command line ar0ument.

-

#include

#include

#include

ifstream in,ile;

ofstream out,ile;

main(int ar0c! char ar0v){ in,ile.open("test.t t");

if(Sin,ile){

cout

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-

out,ile.open("test.t t"! ios==app);

if(Sout,ile){

cout

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-

#include

#include

main(){

lon0 pos;

ofstream outKle;

outKle.open("test.t t");

-- outKle.3rite("hello 3orld Bn /his is a sample. hello 3orld"! );

outKle

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-

Xere! a loop 3ill 1e used to process the 3hole Kle. We 3ill see that it is

much faster due to 1ein0 capa1le of reducin0 the num1er of calls to readin0

and 3ritin0 functions. :nstead of $%%%% 0etc () calls! 3e are makin0 only

one read () function call. /he performance is also made in physical reduced

disk access (read and 3rite). :mportant part of the pro0ram code is 0iven

1elo3=

-

#include

#includemain(){

int i %;

int U %;

char strQ$%%%%R;

ifstream K; --open the input Kle

ofstream fo; --open the output Kle

K.open("test.t t"! ios==in); --open the input Kle

fo.open("out,ile.t t"! ios==out); --open the output Kle

K.seek0(%! ios==end); --0o the end of input Kle

K.tell0(); --0et the position;

K.seek0(%! ios==1e0); --0o to the start of input Kle

for(i %; i

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$

&

'

*

+

J

5

6

*%*$

*&

*'

*

**

*+

*J

*5

*6

+%

+$

+&

+'

+

+*

++

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+J

+5

+6

J%

J$

J&

J'

J

J*

J+JJ

J5

J6

5%

5$

5&

5'

5

5*

5+

5J

55

56

6%

6$

6&

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6'

6

6*

6+

6J

65

66

si eof

#include

#include

main(){

int i;

char c 7a7;

lon0 l;

dou1le d;

2oat f;

--si eof() function tell the si e fo diOernt type of varia1les

cout

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--fo.3rite("Bn"! i); --to 3rite 1inary

fo

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seek0 0et

-

/his is a sample pro0ram to demonstrate the use of open()! close()! seek0()! 0et()

functions and streams. :t e pects a Kle named my ,ile.t t in the current directory

havin0 some data strin0s inside it.

-

#include

#include

#include

-- 4ecalrein0 the stream o1Uects

ifstream in,ile;

ofstream scrn! prnt;

main(){

char in?har; in,ile.open("my ,ile.t t"! ios==in); --open the Kle for input

if(Sin,ile){

cout

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scrn.close(); --close the output stream

in,ile.seek0(%! ios==1e0); --8o to the 1e0innin0 of the Kle

prnt.open("@ /$"! ios==out); --Fttach the output stream 3ith the @ /$ port

3hile(in,ile.0et(in?har)){ --read the 3hole Kle one character at a time

prnt

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B$ strcture

9truct

-

9imple pro0ram sho3in0 the initiali ation of structure.;

-

#include

--4eclarin0 student structure

struct student{

char nameQ+ R;

char courseQ$&5R;

int a0e;

int year;

};

main(){

--initiali in0 the structure

student s$ {"Fli"! "?s&%$ :ntorduction to pro0rammin0"! &&! &%%&};

cout

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}

B& arro3 access

arro3 access

-

/his pro0ram sho3s the access of structure data mem1ers 3ith pointer to structure

-

#include

struct student{

char nameQ'%R;

char courseQ+%R;

int a0e;

int year;

};

main(){

student s$ {"9yed 9huUaat Fli"! "?s&%$"! &%! &%%&};

student s tr;

s tr Ps$;

cout

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cout

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char courseQ$&5R;

int a0e;

int year;

};

student s$ {"Fli"! "?s&%$"! & ! $66%};

--usin0 si eof() operator detemine the si e

cout

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main(){

--declarin0 student structure

struct student{

char nameQ'%R;

char courseQ$*R;

int a0e;

2oat 8 F;

};

int noAf9tudents '; --total no of students student studentsQnoAf9tudentsR; --array of student structure

int totalF0e! inde ! avera0eF0e;

2oat total8 F! ma 8 F! avera0e8 F;

--initiali in0 the structure! 0ettin0 the input from user

for(int i %; i < noAf9tudents; i ){

cout

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cout > studentsQiR.8 F;

}

ma 8 F %;

--calculatin0 the total a0e! total 8 F and ma 8 F

for(int U %; U < noAf9tudents; U ){

totalF0e totalF0e studentsQUR.a0e; total8 F total8 F studentsQUR.8 F;

--determinin0 the ma 8 F and storin0 its inde

if(studentsQUR.8 F>ma 8 F){

ma 8 F studentsQUR.8 F;

inde U;

}

}

--calculatin0 the avera0e a0e

avera0eF0e totalF0e-noAf9tudents;

cout

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--4eterminin0 the 0rade of the class

if(avera0e8 F > ){

cout

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main(){

int num1er;

cout > num1er;

if(num1er P % 5) --5 is 3ritten in de adecimal form

cout

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cin >> pass3ord;

passptr pass3ord;

--no3 enctryptin0 the pass3ord 1y usin0 ` 3ith '

3hile( passptr S 7B%7){

passptr ( passptr ` ');

passptr;

}

cout

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int num1er! result;

cout > num1er;

result num1er

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