c++ programs for class 12

7/29/2019 c++ programs for class 12

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PPRROOGGRRAAMMSS IINN CC++++2012-2013

NAME: ALOK KUMAR

ROLL NO: 1603879


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INDEX

1. Classes and objects

2. Polymorphism

3. Constructor destructor

4. Inheritance

5. Stacks and queue

6. Data file management7. Array

8. SQL queries


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CLASSES AND OBJECTS

1. Program to Define a Class Student and accessing

member function using its object.Define a class student with the following specification:

Private members:

Admno integer

Sname 20 character

Eng,Math,Science, float

total float

ctotal() a function to calculate eng + math + science with

float return type.

Public member:

Takedata() Function to accept values for admnosnameeng

science and invoke ctotal() to calculate total.

Showdata() Function to display all the data members onthe

screen.

#include

#include

#include

class student

{

private:

intAdmno;

charSname[20];


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floatEngMathScience;

float total;

floatctotal()

{

returnEng+Math+Science;}

public:

voidTakedata()

{

coutAdmno;

coutMath>>Science;

total=ctotal();

}

voidShowdata()

{

cout


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2. Program to Define a Class Batsman and accessing

member function using its object.

Define a class batsman with the following specifications:

Private members:

bcode 4 digits code number

bname 20 characters

inningsnotoutruns integer type

batavg it is calculated according to the formula

batavg =runs/(innings-notout)

calcavg() Function to compute batavg

Public members:

readdata() Function toaccept value forbcodebname

inningsnotout and invoke the function calcavg()

displaydata() Function to display the data members on the

screen.

#include

#include

#include

class batsman{

intbcode;

charbname[20];

int inningsnotoutruns;

intbatavg;


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voidcalcavg()

{

batavg=runs/(innings-notout);

}

public :

voidreaddata ();

voiddisplaydata();

};

void batsman::readdata ()

{

coutbcode;

coutnotout>>runs;

calcavg();

}

void batsman::displaydata()

{

cout


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3. Program to Define a Class Test and accessing member

function using its object.

Define a class TEST in C++ with following description:

Private Members:

TestCode integer

Description string

NoCandidate integer

CenterReqd integer(number of centers required)

CALCNTR() function to calculate and return the numberof

centers as (NoCandidates/100+1)Public Members:

SCHEDULE()- Function toaccept value from TestCode,

Description, NoCandidate and invoke the function

CALCNTR()

DISPTEST()- Function to display the data members on the

screen.

#include

#include

#include

class TEST

{

intTestCode;

char Description[30];

intNoCandidate;intCenterReqd;

int CALCNTR()

{

returnNoCandidate/100+1;

}


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public:

void SCHDULE();

void DISPTEST();

};

void TEST::SCHDULE()

{

coutTestCode;

cout


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4. Program to Define a Class BOOK and accessing

member function using its object.

Define a class BOOK with the following specifications :

Private members:

BOOK NO integer type

BOOKTITLE string

PRICE float

TOTAL_COST() A function to calculate the total cost for Nnumber

argument.

Public members:

INPUT() function to read BOOK_NO. BOOKTITLE,

PRICE

PURCHASE() function to ask the user to input the numberof

copies to be purchased. It invokes

TOTAL_COST() and prints the total cost tobe

paid by the user.

#include

#include

#include

class BOOK

{

int BOOKNO;

char BOOKTITLE[20];

float PRICE;

void TOTAL_COST(int N)


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{

floattcost;

tcost=PRICE*N;

cout


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5. Define a class Travel in C++ with the description

given below

Private Members:

T_Code string

No_ of_ Adults integer

No _of _Children integer

Distance integer

TotalFare float

Public Members:

constructor to assign initial values as follows:

TCodeas NULLNo _of_ Adults as 0

No_ of_Children as 0

Distance as 0

TotalFare as 0

AssignFare() function which calculates and assigns the value of t

he data member Totalfare as follows For each

Adult

Fare(Rs)

ForKilometers

500 >=1000

300=500

200


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EnterTour() function to input the values of the data members

T_Code, No_of_Adults, No_of_Children and

Distance ; and invoke the AssignFare() function.

ShowTravel() function which displays the content of all the data

members for a Travel.

#include

#include

#include

#include

class Travel

{

charT_Code[21];

intNo_of_Adults,No_of_Children,Distance;

float TotalFare;

public:

Travel( )

{strcpy(T_Code,"NULL");

No_of_Adults=No_of_Children=Distance=

TotalFare=0;

}

voidAssignFare( )

{

if(Distance>=1000)

TotalFare=No_of_Adults*500+No_of_Children* 250;

else if(Distance>=500)


else


}


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voidEnterTravel( )

{

cout


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POLYMORPHISM

#include

#include

float area(float a, float b)

{ return a*b;

}

float area(float a)

{ return a*a;

}

void main()

{ clrscr();

int choice;float a,b, ar;

cout


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CONSTRUCTOR DISTRUCTURE

1.Program to calculate factorial of a given numberusing copy constructor.

#include

#include

class copy

{ intvar,fact;

public:

copy(int temp)

{

var = temp;

}double calculate()

{

fact=1;

for(int i=1;i


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2. Program to Calculate Prime Number Using Constructor

#include

#include

class prime

{

inta,k,i;

public:

prime(int x)

{

a=x;}

void calculate()

{

k=1;

{

for(i=2;i


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else

cout


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3. Program to print student details using constructor and

destructor

#include#include

classstu

{

private:

char name[20],add[20];

introll,zip;

public:stu ( );//Constructor

~stu( );//Destructor

void read( );

voiddisp( );

};

stu :: stu( )

{

cout


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voidstu :: disp( )

{

cout


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4. Program to show constructor overloading#include

#include

class temp

{ int a,b;

public:

temp(int x, int y);

temp(int x);

temp();

void put();

};

temp::temp(int x, int y)

{ a=x;b=y;

}

temp::temp(int x)

{ a=x;

b=0;

}

temp::temp()

{ a=0;b=0;

}

void temp::put()

{ cout


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INHERITANCE

1.Program to find out the student details using multipleinheritance.#include

#include

class student

{

protected:

int rno,m1,m2;

public:

void get()

{

coutrno;

coutm1>>m2;

}

};

class sports

{

protected:

intsm;// sm = Sports mark

public:

voidgetsm()

{

coutsm;

}

};


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classstatement:publicstudent,public sports

{

inttot,avg;

public:

void display(){

tot=(m1+m2+sm);

avg=tot/3;

cout


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2. Program to find the mean value of a given number

using friend function.#include

#includeclassbase

{

int val1,val2;

public:

void get()

{

coutval1>>val2;}

friend float mean(base ob);

};

float mean(base ob)

{

return float(ob.val1+ob.val2)/2;

}

void main()

{

clrscr();

baseobj;

obj.get();

cout


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STACKS AND QUEUE

1.Program: Static queue

#include

#include

#include

class queue

{

int data[10];

int front,rear;

public:

queue(){

front=rear=-1;

}

void add();

void remove();

void display();

};

void queue :: add(){

if((front==0&&rear==9)||(rear==(front-1)))

{

cout


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else

rear++;

data[rear]=x;

}

void queue::remove(){

if(front==-1)

{

cout


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cout


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2. Program: Queue with class#include

#include

#include

#define NULL 0

struct queue

{

int info;

queue * next;

};

class que{

private:

queue * front;

queue * rear;

public:

queue();

void insert();

void del();void display();

};

que:: que()

{

front= rear= NULL;

}

void que:: insert()

{

queue * temp;

temp= new queue;

couttemp->info;

temp->next=NULL;


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if(rear== NULL)

front= rear =temp;

else

{

rear->next=temp;rear=temp;

}

}

void que :: del()

{

queue *temp;

if(front == NULL)

cout


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clrscr();

que q1;

int ch;

while (1)

sert()";cout


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3. Program: stack-lifo

#include

#Include

#include

Structemp

{

Char name[20];

Intsal;

Emp *next;

};

Emp * top=0;

Void push()

{

emp *temp;

temp= new emp;

couttemp->name>>temp->sal;

temp->next=0;if(top= =0)

top=temp;

else

{

temp ->next=top;

top=temp;

}

}

Void pop()

{

emp *temp;

if(top= =0)

cout


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else

{

temp=top;

top=top->next;

delete temp;}

}

Void print()

{

if(top!=0)

for(em *t=top;t;t->next)

{

cout


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4. Program: Based on QUEUE [FIFO]

#include

#include

#define NULL 0

#include

structque

{

int info;

que *next;

};

que * front=NULL,*rear=NULL;

void insert(){

que *temp;

temp=new que;

couttemp->info;

temp->next=NULL;

if(rear=NULL)

rear=front=temp;else

{

rear->next=temp;

rear=temp;

}

}

void del()

{ que * temp;

if(front==NULL)

cout


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delete temp;

}

else

{ temp=front;

front=front->next;delete temp;

}

}

void print()

{ if(front==NULL)

cout


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5. Program: Stack with class

#include

#include

#include

# define NULL 0

struct stack

{

int info;

stack * next;

};

classst

{

private:

stack * top;

public:

st();

void pop();

void push();void display();

};

st:: st()

{

top= NULL;

}

voidst:: push()

{

stack * temp;

temp= new stack;

couttemp->info;


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temp->next = NULL;

if(top== NULL)

top= temp;

else

{temp->next= top;

top=temp;

}

}

voidst:: pop()

{

stack* temp;if(top== NULL)

cout


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cout


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DATA FILE MANAGEMENT

1.Program to count and display the number ofalphabets present in a text file

#include

#include

#include

#include

void display()

{ ifstream afile;

afile.open("STORY.TXT");

char ch;

int c=0;

while(afile)

{

afile.get(ch);

if (isalpha(ch))

c++;}

cout


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2.Program to count and display the number of blankspaces present in a text file

#include

#include

#include

#include

void display()

{

ifstream afile;

afile.open("NOTES.TXT");

char ch;

int c = 0;

while(afile)

{

afile.get(ch);

if (ch == ' ' )

c++;

}cout


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3.Program to calculate the average word size in a textfile.

#include#include

void calculate()

{

fstream tfile;

clrscr();

tfile.open("Report.txt",ios::in);

char arr[20];

char ch;

int i=0,sum=0,n=0;

while(tfile)

{

tfile.get(ch);

arr[i] = ch;

i++;

if (( ch == ' ') || (ch == '.'))

{I - -;

sum = sum + i;

i = 0;

n++;

}

}

cout


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4.Program to create the file of employees

# include

# include

# include

class EMPLOYEE

{

int Empno, hra, da, net_sal;

char Ename[20];

char add[20];

float basic;

public :

void GETIT()

{

coutEmpno;

coutEname;coutadd;

coutbasic;

}

void CALC()

{

hra = (basic * 20) /100;da = (basic * 10) / 100;

net_sal = basic + da + hra;

}

void SHOWIT()

{


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CALC();

cout


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void main()

{

clrscr();

int n;

coutn;

EMPLOYEE emp;

for (int i = 0;i


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5.Program to print the frequency of the alphabets and thenumeric digits after reading from the text file.

# include

# include

# include

void main()

{ char ch, fname[20];

int num, fre[26], i;

cout


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ARRAY

1.Write a program in C++ to find the maximum sum in a row& a column and the sum of elements in a row & a column.

#include

#include

void main()

{

clrscr();

void read( int [][10], int, int);

int maxr( int [][10], int, int);

int maxc( int [][10], int, int);

void rowsm( int [][10], int, int);

void colsm( int [][10], int, int);

void disp( int, int);

int a[10][10], b, d, r, c;

coutr>>c;

read( a, r, c);

b = maxr(a ,r ,c);d = maxc(a, r ,c);

rowsm (a ,r, c);

colsm (a, r, c);

disp (b, d);

getch();

}

void read(int x[][10], int r, int c)

{cout


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int maxr(int x[][10] ,int r, int c)

{

int max=0, sum, rn;

for(int i=0; i


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for(int i=0; i


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2. Program related to binary search in simple notation

assuming the array to be ascending order

#include#include

void main()

{

int a[10];

int n,val;

void readsz(int &);

void read(int *,int);

void sort(int *,int);

void val(int &);

int bsearch(int * , int, int);

readsz( n );

read( a, n );

sort( a, n );

val( val );

cout


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void sort( int *, int n );

{

for(int i=0; i


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3. Write a C++ program to find the difference of the sum

of primary upper & lower diagonal.

#include

#include

void main()

{

clrscr();

int a[10][10], ud=0, ld=0, r, i, j;

coutr;

cout


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4. To merge two arrays, one being in ascending, second in

descending order, and resultant array should be In

ascending

#include

#include

void main()

{

clrscr();

int a[10], b[10], c[20];

int m, n;

coutm;

cout


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void sort_asc( int a[], int m)

{

for(int i=0; i


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void merge(int a[], int b[], int c[], int m, int n)

{

int i=0, j=n-1, k=0;

while(i=0){

if(a[i]=0; --l)

c[k++]= b[l];

else

for(int l=i; i


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SQL QUERIES

1.TABLE:- StudentNo. Name Age Department Dateofadm Fee Gender

1. Pankaj 24 Computer 10/01/97 120 M

2. Shalini 21 History 24/03/98 200 F

3. Sanjay 22 Hindi 12/12/96 300 M

4. Sudha 25 History 01/07/99 400 F

5. Rakesh 22 Hindi 05/09/97 250 M6. Shakeel 30 History 27/06/97 300 M

7. Surya 34 Computer 25/02/97 210 M

8. Shikha 23 Hindi 31/07/97 200 F

1.Select * FROM Student WHERE Department = History;Output :-


4. Sudha 25 History 01/07/99 400 F

6. Shakeel 30 History 27/06/97 300 M

2.Select Name FROM Student WHERE Gender = F;Output:-


4. Sudha 25 History 01/07/99 400 F

8. Shikha 23 Hindi 31/07/97 200 F


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3.Select name FROM Student ORDER BY Dateofadm;Output:-

4. Select COUNT (*) FROM Student WHERE age > 23;Output :- 4

5.Select MAX (Age) FROM Student WHERE Gender = F;

Output :- 25

Sanjay

PankajSurya

Shakeel

Shikha

Rakesh

Shalini

Sudha


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2.Table:- HospitalNo. Name Age Department Dateofadm Charg

es

Gender

1. Sandeep 65 Surgery 23/02/98 300 M

2. Ravina 24 Orthopedic 20/01/98 200 F

3. Karan 45 Orthopedic 19/02/98 200 M

4. Tarun 12 Surgery 01/01/98 300 M

5. Zubin 36 ENT 12/01/98 250 M

6. Ketaki 16 ENT 24/02/98 300 F

7. Ankita 29 Cardiology 20/02/98 800 F

8. Zareen 45 Gynecology 22/02/98 300 F

9. Kush 19 Cardiology 13/01/98 800 M

10. Shailya 31 Nuclear

Medicine

19/02/98 400 F

1.Select * FROM Hospital WHERE Department = Cardiology;

Output :-

7. Ankita 29 Cardiology 20/02/98 800 F

9. Kush 19 Cardiology 13/01/98 800 M

2. Select Name, Charges, Age From Hospital WHERE Gender =

M;

Output :-

Name Charges Age

Sandeep 300 65

Karan 200 45

Tarun 300 12

Zubin 250 36


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Kush 800 19

3. Select COUNT (*) FROM Hospital WHERE Age


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3.Table :- BooksBook_Id Book_Name Author_Name Publishers Price Type Qty

C0001 Fast Cook Lata Kapoor EPB 355 Cookery 5

F0001 The Teasers William

Hopkins

First Publ. 650 Fiction 20

T0001 My First C++ Brian &Brooke

EPB 350 Text 10

T0002 C++

Brainworks

A. W.

Rossaine

TDH 350 Text 15

F0002 Thunderbolts Anna Roberts First Publ. 750 Fiction 50

Table: - Issued

Book_Id Quantity_Issued

T0001 4

C0001 5

F0001 2

1. Select * FROM Books WHERE Qty BETWEEN 10 and 50;

Output :-

Book_Id Book_Name Author_Name Publishers Price Type Qty

T0002 C++

Brainworks

A. W.

Rossaine

TDH 350 Text 15

F0001 The Teasers WilliamHopkins

First Publ. 650 Fiction 20

F0002 Thunderbolts Anna Roberts First Publ. 750 Fiction 50


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2.Select * FROM Books WHERE (Publishers = EPB OR

Publishers = TDH;

Output:-


C0001 Fast Cook Lata Kapoor EPB 355 Cookery 5

T0001 My First C++ Brian & Brooke EPB 350 Text 10

T0002 C++

Brainworks

A. W. Rossaine TDH 350 Text 15

3. UPDATE Books SET Price = Price + 50 WHERE Publishers =

EPB;

Select * FROM Books WHERE Publishers = EPB;

Output :-


C0001 Fast Cook Lata Kapoor EPB 405 Cookery 5T0001 My First

C++

Brian &

Brooke

EPB 400 Text 10

4. Select SUM (Quantity Issued) FROM Issued;

Output :- 11

5. Select COUNT (DISTINCT Publishers) FROM Books;

Documents

c++ programs for class 12