12th CBSE Practical File

C++Practical
File
2014-2015
Name:Ashwin Francis
Class:12th
A
Roll No.:
Board Roll No.:

1. Write menu driven program to find to
i) Find the row sum and column sum of a given matrix.
ii) Transpose of the matrix.
#include<iostream.h>
#include<process.h>
#include<conio.h>
inta[80][80];
inti=0, j=0;
intm, n; // Matrix 1 : m= no. of Rows, n=no. of Columns
intsum=0;
// FunctionDeclarations
voidrow_sum(inta[80][80]);
voidcolumn_sum(inta[80][80]);
voidtranspose(inta[80][80]);
int main() //mainbody
{clrscr();
char choice;
cout<<"nnDescribe the Size of matrix :";
cout<<"nnntEnterthe numberof rows:";
cin>>m;
cout<<"nntEnterthe numberof columns:";
cin>>n;
cout<<"nnEnterthe elementsof matrix : nn";
for(i=0;i<m; i++)
for(j=0;j<n; j++)
cin>>a[i][j];
cout<<"nnMatrix is: nn";
for(i=0;i<m; i++)
{
for(j=0;j<n; j++)
{
cout<<a[i][j]<<" ";

}
cout<<"nn";
}
intch;
choice='y';
do
{
cout<<"nnChoose from the followingmenu:";
cout<<"nn1.Displayandfindrowwise sumof a 2-D array ";
cout<<"nn2.Displayandfindcolumnwise sumof a 2-D array ";
cout<<"nn3.Displaytranspose of a 2-D array";
cout<<"nn4.Exit";
cout<<"nnnnEnteryourchoice : ";
cin>>ch;
switch(ch)
{
case 1:cout<<"nntDisplayandfindrow wise sumof a matrix : nn";
row_sum(a);
break;
case 2:cout<<"nntDisplayandfindcolumnwise sumof a matrix : nn";
column_sum(a);
break;
case 3:cout<<"nntDisplaytranspose of amatrix : nn";
transpose(a);
break;
case 4 :break;
}
cout<<"nnnWanttochoose again=> ";
cin>>choice;
}while(choice=='y');

getch();
return0;
}
//----------------------------------------------------------- FunctionDefinitions -------------------------------------------------
--------
voidrow_sum(inta[80][80])
{
intv,u;
v=m;
u=m;
for(i=0;i<v; i++)
{
sum=0;
for(j=0;j<u; j++)
{
sum=sum+a[i][j];
}
cout<<"nnSumof Row"<<i+1<<" = "<<sum;
}
}
voidcolumn_sum(inta[80][80])
{intv,u;
v=m;
u=m;
for(j=0;j<v; j++)
{
sum=0;
for(i=0;i<u; i++)
{
sum=sum+a[i][j];
}
cout<<"nnSumof Column"<<j+1<<" = "<<sum;
}

}
voidtranspose(inta[80][80])
{
intv,u;
v=m;
u=n;
for(j=0;j<v; j++)
{
for(i=0;i<u; i++)
{
cout<<"t"<<a[i][j];
}
cout<<"nn";
}
}

2. Write a program to find the sum of both the diagonals of a matrix using function.
#include<process.h>
#include<conio.h>
int a[80][80]; // 2-D matrices
int i=0, j=0;
int m, n; // Matrix 1 : m= no. of Rows , n=no. of Columns
int sum=0;
// Function Declaration
void diagonal(int a[80][80]);
void main() // main body
{
clrscr();
cout<<"nnDescribe the Size of matrix : ";
cout<<"nnntEnter the number of rows : ";
cin>>m;
cout<<"nntEnter the number of columns : ";
cin>>n;
cout<<"nnEnter the elements of matrix : nn";
for(i=0; i<m; i++)
{
for(j=0; j<n; j++)
cin>>a[i][j];
}
cout<<"nnMatrix is : nn";
for(i=0; i<m; i++)
{
for(j=0; j<n; j++)
{

cout<<a[i][j]<<" ";
}
cout<<"nn";
}
diagonal(a);
getch();
}
//----------------------------------------------------------- Function Definitions -------------------------------------
--------------------
void diagonal(int a[80][80])
{
intui;
ui=m;
sum=0;
cout<<"nnDiagonal 1 Elements are : nn";
for(i=0; i<ui; i++)
{
cout<<a[i][i]<<"n";
sum+=a[i][i];
}
cout<<"nnSum of diagonal 1 elements is : "<<sum;
sum=0;
cout<<"nnDiagonal 2 Elements are : nn";
for(i=0; i<ui; i++)
{
cout<<a[i][ui-(i+1)]<<"n";
sum+=a[i][ui-(i+1)];

}
cout<<"nnSum of diagonal 2 elements is : "<<sum;
}

3. Write a program to swap any two numbers without using third variable.
#include<conio.h>
void main()
{
clrscr();
inta,b;
cout<<"nnEnter first integer : "; cin>>a;
cout<<"nnEnter second integer : "; cin>>b;
a = a * b;
b = a / b;
a = a / b;
cout<<"nnNow value of first integer = "<<a;
cout<<"nnNow value of second integer = "<<b;
getch();
}

4. Write a program to store information of 10 employees and to display of an employee
depending upon the employee no given by the user using structure.
#include <stdio.h>
#include <conio.h>
struct details
{
char name[30];
int age;
char address[500];
float salary;
inteno;
};
int main()
{
int s;
struct details d[10];
clrscr();
for(int i=0;i<10;i++)
{
cout<<"nEnter Employee no.t";
cin>>d[i].eno;

cout<<"nEnter Name:t";
gets(d[i].name);
cout<<"nEnter Age:t";
cin>>d[i].age;
cout<<"nEnter Address:t";
gets(d[i].address);
cout<<"nEnter Salary:t";
cin>>d[i].salary;
}
cout<<"Enter Employee no. whose record is to be found:";
cin>>s;
int flag=0;
for(i=0;i<10;i++)
{
if(d[i].eno==s)
{
flag=1;
break;
}
}
if(flag==1)
{
cout<<"n";

cout<<"nName of the Employee :t"<<d[i].name;
cout<<"nAge of the Employee :t"<<d[i].age;
cout<<"nAddress of the Employee :t"<<d[i].address;
cout<<"nSalary of the Employee :t"<<d[i].salary;
}
else
{
cout<<"data not found";
}
getch();
return 0;
}

6. Define a class report with the following specification:
Private:
adno, name, marks- array of five integers, average- float type
getavg( )- to compute the average obtained.
Public:
Report()- constructor
readinfo( )- to read all values
displayinfo( )- to display data members of report on the screen.
Implement this class in C++.
#include<conio.h>
#include<stdio.h>
#include<string.h>
class report
{
private:
intadno;
char name[25];
int marks[5];
floatavg;
voidgetavg();
public:
report()
{
strcpy(name,"no name");
adno=0;

avg=0;
}
voidreadinfo();
voiddisplayinfo();
};
void report::getavg()
{
int sum=0;
{
sum=sum+marks[i];
}
avg=sum/5;
}
void report::readinfo()
{
cout<<"Enter Admission No.:";
cin>>adno;
cout<<"Enter Name:";
gets(name);

cout<<"Enter Marks of 5 subjects";
{
cin>>marks[i];
}
}
void report::displayinfo()
{
cout<<"nAdmission No.:t";
cout<<adno;
cout<<"nEnter Name:t";
puts(name);
cout<<"Marks of 5 subjects";
{
cout<<"t"<<marks[i];
}
getavg();
cout<<"nAverage marks:t"<<avg;
}
void main()

{
report s1;
s1.readinfo();
s1.displayinfo();
}

7.Define a class CARRENTAL in c++ with the followingDescription:
Private Member:
 CarID of type long int
 AboutCar of type string
 Cartype of type string
 Rent of type float
 A memberfunction AssignRent() toassign the followingvaluesforrent as perthe
givenCartype
Cartype Rent
Small 1000
Van 800
SUV 2500
Publicmembers
 A function GETCar() to allow user to entervaluesfor CarID, About Car, Cartype and
call FunctionAssignRent() to assignRent.
 A function ShowCar() to allow userto viewthe contentof all the data members.
#include<conio.h>
#include<stdio.h>
#include<string.h>
classcarrental
{
longcarid;
charaboutcar[50];
charcartype[25];
floatrent;

voidassignrent()
{
if(strcmp(cartype,"small")==0)
{
rent=1000;
}
else if(strcmp(cartype,"van")==0)
{
rent=800;
}
else
{
rent=2500;
}
}
public:
voidgetcar()
{
cout<<"nentercarID:";
cin>>carid;

cout<<"nentercartype:";
gets(cartype);
cout<<"nentercar description:";
gets(aboutcar);
assignrent();
}
voidshowcar()
{
cout<<"nncarID:t";
cout<<carid;
cout<<"nncartype:t";
puts(cartype);
cout<<"ncar description:t";
puts(aboutcar);
cout<<"nrent:t"<<rent;
}
};
voidmain()
{
clrscr();
carrental s1;
s1.getcar();

8. Write a program that reads two matricesM1[]mXnand M2[]mXnand compare them for equality.
#include<process.h>
#include<conio.h>
inta[80][80],b[80][80]; // 2-D matrices
inti=0, j=0;
intm, n, p,q; // Matrix 1 : m= no. of Rows, n=no. of Columns
// Matrix 2 : p= no. of Rows ,q=no. of Columns
intmc, oc, sum=0;
voidequivalency( inta[80][80],intb[80][80]);
voidmain()
{
cout<<"nenterno.ofrowsof matrix 1 :";
cin>>m;
cout<<"nenterno.ofcolumnsof matrix 1:";
cin>>n;
cout<<"nenterelementsof matrix 1:n";
for(i=0;i<m; i++)
{
for(j=0;j<n; j++)

{
cin>>a[i][j];
}
}
cout<<"nmatrix 1:n";
for(i=0;i<m; i++)
{
for(j=0;j<n; j++)
{
cout<<a[i][j]<<"";
}
cout<<"n";
}
cout<<"nenterno.ofrowsof matrix 2 :";
cin>>p;
cout<<"nenterno.ofcolumnsof matrix 2:";
cin>>q;
cout<<"nenterelements of matrix 2:n";
for(i=0;i<p; i++)
{
for(j=0;j<q; j++)
{
cin>>b[i][j];

}
}
cout<<"nmatrix 2:n";
for(i=0;i<p; i++)
{
for(j=0;j<q; j++)
{
cout<<b[i][j]<<"";
}
cout<<"n";
}
equivalency(a,b);
}
voidequivalency( inta[80][80],intb[80][80])
{intcount=0;
for(i=0;i<m; i++)
{
for(j=0;j<n; j++)
{
if(a[i][j]==b[i][j])
++count;
}

}
if(count==(m*n))
cout<<"nnThe matricesare equivalent.";
else
cout<<"nnThe matricesare notequivalent.";
}

9. Write a program to accept the name and total marks of 20 students in an array. Display the names
of the students (including marks) securing highest and lowest marks. (use array of structure).
#include<conio.h>
#include<stdio.h>
struct stud
{
char name[25];
floatmarks;
};
voidmain()
{
studs1[20];
intu,v;
for(inti=0;i<20;i++)
{
cout<<"nEntername of student:";
gets(s1[i].name);
cout<<"nEntermarks of the student:";
cin>>s1[i].marks;
}

floatmax=0,min=s1[0].marks;
for(i=0;i<20;i++)
{
if(s1[i].marks>max)
{
max=s1[i].marks;
u=i;
}
if(min>s1[i].marks)
{
min=s1[i].marks;
v=i;
}
}
cout<<"nhighestmarks"<<max<<"scored by"<<s1[u].name;
cout<<"nnlowestmarks"<<min<<"scored by"<<s1[v].name;
}

10. Write a program using a class to store price list of 50 items and to print the largest
price as well as the sum of all prices. You can take name of class as ITEM.
#include<conio.h>
#include<stdio.h>
class ITEM
{
public:
intitemno;
int price;
void enter()
{
cout<<"nEnter item no.:";
cin>>itemno;
cout<<"nEnter price of item:";
cin>>price;
}
void display()

{
cout<<"nItem no.: ";
cout<<itemno;
cout<<"nPrice: ";
cout<<price;
}
};
void main()
{
ITEM s1[50];
{
s1[i].enter();
}
for(i=0;i<50;i++)
{
s1[i].display();
}
int max=0,sum=0;

for(i=0;i<50;i++)
{
if(max<s1[i].price)
{
max=s1[i].price;
}
}
for(i=0;i<50;i++)
{
sum=sum+s1[i].price;
}
cout<<"nMaximum price: "<<max;
cout<<"nnTotal price of items: "<<sum;
}

11. Write a menu driven program using class to show the details of 10 students and provide the
facilityof viewingdetailsof the topper as well as of specific student by providing his/her roll number.
(Take the name of class as STUDENT).
#include<conio.h>
#include<stdio.h>
intMAX=3;
classstudent
{
introllno; //Roll NoOf The Student
char name[21]; //Name Of The Student
floatmarks; //Marks Of The Student
char grade; /*Grade Of The StudentOn The BasisOf
Percentage */
public:
voidreadstudent()
{
cout<<"ntEnterThe Roll NoOf The Student: ";
cin>>rollno;
cout<<"ntEnterThe Name Of The Student: ";
gets(name);
cout<<"ntEnterThe Marks Of The Student: ";
cin>>marks;
}
voiddispstudent()

{ calcgrade();
cout<<"ntRoll NoOf The Student: "<<rollno;
cout<<"ntEnterThe Name Of The Student: "<<name;
cout<<"ntMarksOf The Student:"<<marks;
cout<<"ntGrade:"<<grade;
}
intgetrollno() //AccessorFunction
{
returnrollno;
}
floatgetmarks()
{
returnmarks;
}
voidcalcgrade()
{
if(marks>=75)
grade = 'O';
else if(marks>=60)
grade = 'A';
else if(marks>=50)
grade = 'B';
else if(marks>=40)
grade = 'C';
else

grade = 'F';
}
};
voidmain()
{
clrscr();
studentstd[10];
for(inti=0;i<MAX;i++)
{
cout<<"ntEnterDetailsOf Student"<<(i+1)<<":";
std[i].readstudent();
}
intchoice,rno,pos=-1,highmarks=0;
do
{
clrscr();
cout<<"nt**********MAIN MENU**********";
cout<<"nt1.SpecificStudent.";
cout<<"nt2.Topper.";
cout<<"nt3.Exit.";
cout<<"ntEnterYour Choice(1-3):";
cin>>choice;
switch(choice)
{

case 1: cout<<"ntEnterThe ROll No Of The StudentYOuWant To See:";
cin>>rno;
for(i=0;i<MAX;++i)
{
if(std[i].getrollno()==rno)
{
std[i].dispstudent();
break;
}
}
if(i==MAX)
cout<<"ntInvalidRoll No!!!!!!!!!!!!";
getch();
break;
case 2: for(i=0;i<MAX;++i)
{
if(std[i].getmarks()>highmarks)
{
pos=1;
highmarks=std[i].getmarks();
}
}
std[pos].dispstudent();
getch();
break;

case 3: break;
default:cout<<"ntWrongChoice Entered!!!!!!!!!!!!!!!";
break;
}
}while(choice>=1&&choice<3);
}

13. Write a program to implement multilevel inheritance in C++ using classes.
#include<stdio.h>
#include<conio.h>
classperson
{
char name[21];
intage;
public:
voidindata()
{
cout<<"nnEnterthe name of Student:" ;
gets(name);
cout<<"nnEnterthe age : ";
cin>>age;
}
voidoutdata()
{ cout<<"nn";
cout<<"nnName of the studentis:"<<name;
cout<<"nnAge of the studentis: "<<age;

}
};
classstudent:publicperson
{
floatTmarks;
introllno;
public:
floatm;
voidenter()
{
cout<<"nnEnterthe roll number:";cin>>rollno;
cout<<"nnEntertotal marks(outof 100) : ";
cin>>Tmarks;
m=Tmarks;
}
voiddisplay()
{
cout<<"nnRoll number:"<<rollno;
cout<<"nnTotal marksare : "<<Tmarks;

}
};
classscholarship:publicstudent
{
public:
voidschol()
{
if (m>75)
cout<<"nnScholarshipGranted";
else
cout<<"nnNoScholarship";
}
};
voidmain()
{
clrscr();
scholarshipA;

A.indata();
A.enter();
A.outdata();
A.display();
A.schol();
getch();
}

15. Write a program in C++ to write text to a file Test.txt and again reading back the
contents of the file & display it on the screen. The contents is give as-
“Computer Science Class XII.CBSE Board Programming in C++”
#include<stdio.h>
#include<conio.h>
#include<fstream.h>
void main()
{
charch[100],ch1[100];
fstream f1;
f1.open("test.txt",ios::out);
cout<<"nEnter text: ";
gets(ch);
f1<<ch;
f1.close();
f1.open("test.txt",ios::in);
f1.seekg(0);
while(!f1.eof())
{
f1.get(ch1,100);

cout<<"nnn";
puts(ch1);
}
f1.close();
}

19. Write a program in C++ to count number of alphabets present in a text file record.txt.
#include<fstream.h>
#include<conio.h>
#include<ctype.h>
void main()
{
fstream f1;
charch;
int count=0;
f1.open("record.txt",ios::in);
if(!f1)
{
cout<<"nnFILE NOT FOUND";
}
else
{
f1.seekg(0);
while(!f1.eof())

{
f1.get(ch);
if(isupper(ch)==0||islower(ch)==0)
{
count++;
}
}
cout<<"nnNo. of alphabets: "<<count;
}
getch();
}

20. Write a function in C++ to read the content from a text file NOTES. TXT, count and
display the number of blank spaces present in it.
#include<fstream.h>
#include<conio.h>
#include<ctype.h>
void main()
{
fstream f1;
charch;
int count=0;
f1.open("notes.txt",ios::in);
if(!f1)
{
cout<<"nnFILE NOT FOUND";
}
else
{
f1.seekg(0);
while(!f1.eof())

{
f1.get(ch);
if(ch==' ')
{
count++;
}
}
cout<<"nnNo. of spaces: "<<count;
}
getch();
}

21.Write a program that displays the size of a file in bytes.
#include<conio.h>
#include<fstream.h>
#include<process.h>
#include<stdio.h>
int main()
{
clrscr();
char filename[20];
cout<<"Enter file name:";
gets(filename);
ifstream fin(filename,ios::in|ios::ate);
if(!fin)
{
cout<<"nSorrycan not open "<<filename<<" file";
return1;
}
long bytes=fin.tellg();
cout<<"nfile size is "<<bytes<<" bytesn";
getch();
return 0;
}

23.Declare a class student fields sname,section and marks and member functions to
1) Append the records into a datafile
2) Display the records of the having scored more than 40%. Implement the class using a menu
driven program
#include<fstream.h>
#include<conio.h>
#include<stdio.h>
#include<ctype.h>
#include<process.h>
class student
{
charsname[20];
char section[10];
float marks;
public:
voidgetit()
{
cout<<"ntEnter Student Name: ";
gets(sname);
cout<<"ntEnter Student Section: ";
gets(section);
cout<<"ntEnter Student Marks: ";
cin>>marks;
}
voidshowit()

{
cout<<"ntStudent Name: "<<sname;
cout<<"ntStudent Section: "<<section;
cout<<"ntStudent Marks: "<<marks;
}
void write()
{ student e;
ofstreamfout("STUDENT.txt",ios::binary||ios::app);
getit();
fout.write((char*)&e,sizeof(e));
fout.close();
}
void read()
{ student e;
ifstream fin("STUDENT.txt",ios::binary);
while(!fin.eof())
{
fin.read((char*)&e,sizeof(e));
if(marks>40)
showit();
}
}
};
void main()

{
clrscr();
student s1;
intch;
do
{ cout<<"nnt******MENU******";
cout<<"nt1.Add Record.";
cout<<"nt2.Display The Students Securins More Than 40%. ";
cout<<"nt3.Exit.";
cout<<"nntEnter Your Choice: ";
cin>>ch;
switch(ch)
{
case 1:{
s1.write();
getch();
break;
}
case 2:{
s1.read();
getch();
break;
}
case 3:{
cout<<"ntClosing....Please Wait........";

break;
}
default :{ cout<<"ntWrong Choice Inserted!!!!!!!!";break; }
}}while(1); }

24. Write a menu driven program with function to-
1) Create an array of 10 integers
2) Sort the array using bubble sort
3) Search for a given integer from the array using binary search.
#include<conio.h>
voidbubble_sort (int A[], int n)
{ int temp; int count=0;
for(int i=0; i<n; i++)
{
for(int j=0; j<n-1; j++)
{ if(A[j+1]<A[j])
{ count++;
temp=A[j+1];
A[j+1]=A[j];
A[j]=temp;
cout<<"nnArray for iteration "<<count<<" is : nn";
for(int k=0; k<n; k++)
cout<<A[k]<<" ";
}
}
}
}

voidbinary_search(int A[], int n, int p)
{
intL,U,mid;
charch;
L=0; U=n-1;
while(L<=U) //i.e loop will continue if L<=u. if L>U loop will end
{ mid=(L+U)/2;
if(A[mid]==p)
{
cout<<"nnElement "<<p<<" found. Search Successful.";
cout<<"nnSubscript = "<<mid<<" nnPosition = "<<mid+1;
break;
}
else if(p<=A[mid])
U=mid-1;
else
L=mid+1;
}//end of while loop
if(L>U)

{
cout<<"nnUnsuccessful search.";
}
}
void main()
{
int a[100],n,s,c;
cout<<"nnEnter size of array(<100): ";
cin>>n;
cout<<"nnEnter elements:n";
for(int i=0;i<n;i++)
{
cin>>a[i];
}
cout<<"nnArray is:n";
for(i=0;i<n;i++)
{

cout<<a[i]<<",";
}
cout<<"nn1.Sortn2.SearchnnEnter your choice: ";
cin>>c;
if(c==1)
{
cout<<"nnSORTING ARRAY:";
bubble_sort (a,n);
}
else if(c==2)
{
cout<<"Enter element to be searched: ";
cin>>s;
bubble_sort (a,n);
binary_search(a,n,s);
}
getch();
}

25. Suppose A,B, C are arrays of integers of sizes m,n, m+n respectively. The numbers in A
appear in ascending order while the numbers in B appear in descending order. Write user
defined function to produce a third array C by merging arrays A and B in ascending order.
The function has A,B, C and m,n as arguments. Implement it in C++.
#include<conio.h>
void merging(int [],int [],int,int,int []);
void main()
{
int A[50],B[50],C[100],m,n,i;
clrscr();
cout<<"ntEnter no. of element of array A: ";
cin>>m;
cout<<"ntEnter the elements of array one(must be asscending order):";
for(i=0;i<m;i++)
{
cin>>A[i];
cout<<"t";
}
cout<<"ntThe entered array one is:[";
for(i=0;i<m;i++)
{
cout<<A[i]<<" ";
}
cout<<"]";
cout<<"ntEnter no. of element of array B: ";

cin>>n;
cout<<"ntEnter the elements of array two(must be descending order):";
for(i=0;i<n;i++)
{
cin>>B[i];
cout<<"t";
}
cout<<"ntThe entered array two is:[";
for(i=0;i<n;i++)
{
cout<<B[i]<<" ";
}
cout<<"]";
merging(A,B,m,n,C);
cout<<"ntThe third array after merging one and two is:[";
for(i=0;i<(m+n);i++)
{
cout<<C[i]<<" ";
}
cout<<"]";
getch();
}
void merging(int A[],int B[],intk,intl,int C[])
{
for(int i=0,j=l-1,s=0;i<k&&l>=0;)

{
if(A[i]<=B[j])
{
C[s++]=A[i++];
}
else
{
C[s++]=B[j--];
}
}
if(i<k)
{
while(i<k)
{
C[s++]=A[i++];
}
}
else
{
while(j>=0)
{
C[s++]=B[j--];
}
}
}

26. Write a C++ program to implements a stack using Linked List. The stack stores integer
data. The program should allow the user to PUSH elements into the STACK, POP elements
from the STACK & display the elements of the STACK.
#include<conio.h>
#include<process.h>
struct node {
int roll;
node* next;
}*top,*save,*ptr,*newptr,*np;
node *create(int a)
{
ptr=new node;
ptr->roll=a;
ptr->next=NULL;
returnptr;
}
void push(node *np)
{
if(top==NULL)
top=np;
else
{
save=top;
top=np;
np->next=save;
}
}
void pop()
{
if(top==NULL)
cout<<"n Underflow!!!!";
else
{
ptr=top;
top=top->next;
deleteptr;
}
}

void display(node *np)
{
while(np!=NULL)
{
cout<<np->roll<<" -> ";
np=np->next;
}
}
void main()
{
clrscr();
top=NULL;
intn,m;
chark,ch;
do {
cout<<"nChoose from the menu :n"
<<"n 1.Push."
<<"n 2. Pop."
<<"n 3.Display."
<<"n 4. Quit."
<<"nnEnter your choice : ";
cin>>n;
switch(n)
{
case 1: k='y';
while(k=='y'||k=='Y')
{
cout<<"n Enter element to be inserted .";
cin>>m;
newptr=create(m);
if(newptr==NULL)
cout<<"n Cannot create !!!!";
push(newptr);
cout<<"n The Stack formed is : ";
display(top);

cout<<"nn Want to enter again ?: ";
cin>>k;
}
break;
case 2: k='y';
while(k=='y'||k=='Y')
{
pop();
cout<<"n The Stack formed is : nn";
display(top);
cout<<"nn Want to delete again ?: ";
cin>>k;
}
break;
case 3: cout<<"n The Stack formed is : ";
display(top);
break;
case 4: exit(0);
break;
default: cout<<"n Please enter desired keyword : ";
}
cout<<"n Do you want to continue..? : ";
cin>>ch;
}while(ch=='y'||ch=='Y');
getch();
}

27. Write a menudrivenprogram with functionto-
1) Insert a node in queue
2) Delete a node from queue
#include<conio.h>
struct node {
introll;
node*next;
}*front,*rear,*ptr,*newptr,*np;
node *create(inta)
{
ptr=newnode;
ptr->roll=a;
ptr->next=NULL;
returnptr;
}
voidinsert(node*np)
{
if(front==NULL)
front=rear=np;
else

{
rear->next=np;
rear=np;
}
}
voiddelet()
{
if(front==NULL)
cout<<"n Underflow!!!!";
else
{
ptr=front;
front=front->next;
deleteptr;
}
}
voiddisplay(node *np)
{
while(np!=NULL)
{
cout<<np->roll<<"->";
np=np->next;
}

}
voidmain()
{
clrscr();
front=rear=NULL;
intn,m;
charans,ch;
do
{ cout<<"nChoose fromthe menu:"
<<"n 1) Insert."
<<"n 2) Delete"
<<"n 3) Display"
<<"nn Enteryour choice : ";
cin>>n;
switch(n)
{
case 1: ans='y';
while(ans=='y'||ans=='Y')
{
cout<<"n Enterelementtobe inserted.";
cin>>m;
newptr=create(m);

if(newptr==NULL)
cout<<"n Cannotcreate !!!!";
insert(newptr);
cout<<"n The Queue formedis : ";
display(front);
cout<<"n Want to entermore nodes?:";
cin>>ans;
}
break;
case 2: ans='y';
while(ans=='y'||ans=='Y')
{
delet();
cout<<"n Queue :";
display(front);
cout<<"n Want to delete more ?:";
cin>>ans;
}
break;

case 3: cout<<"n Queue :";
display(front);
break;
default:cout<<"nYouenteredwrongchoice...";
}
cout<<"n Want to returnto mainmenu? : ";
cin>>ch;
}while(ch=='y'||ch=='Y');
getch();
}

28. Write a menu driven program with function to-
1) Insert an element in circular queue
2) Delete an element from the circular queue
#include<conio.h>
#define max 3
int q[10],front=0,rear=-1;
int main()
{
intch;
void insert();
intdelet();
int display();
clrscr();
cout<<"nCircular Queue operationsn";
cout<<"1.insertn2.deleten3.displayn4.exitn";
while(1)
{
cout<<"nEnter your choice:t";
cin>>ch;
switch(ch)
{

case 1: insert();
break;
case 2: delet();
break;
case 3:display();
break;
case 4:return 1;
default:cout<<"nInvalid optionn";
}
}
}
void insert()
{
int x;
if((front==0&&rear==max-1)||(front>0&&rear==front-1))
cout<<"nQueue is overflown";
else
{
cout<<"nEnter element to be insert:t";
cin>>x;
if(rear==max-1&&front>0)
{
rear=0;

q[rear]=x;
}
else
{
if((front==0&&rear==-1)||(rear!=front-1))
q[++rear]=x;
}
cout<<"nElement added to queue";
}
}
intdelet()
{
int a;
if((front==0)&&(rear==-1))
{
cout<<"nQueue is underflow";
getch();
}
if(front==rear)
{
a=q[front];
rear=-1;
front=0;

}
else
if(front==max-1)
{
a=q[front];
front=0;
}
else a=q[front++];
cout<<"nDeleted element is:t"<<a;
}
int display()
{
inti,j;
if(front==0&&rear==-1)
{
cout<<"nQueue is underflown";
getch();
}
if(front>rear)
{
for(i=0;i<=rear;i++)
cout<<"t"<<q[i];

for(j=front;j<=max-1;j++)
cout<<"t"<<q[j];
cout<<"nrear is att"<<q[rear];
cout<<"nfront is att"<<q[front];
}
else
{
for(i=front;i<=rear;i++)
{
cout<<"t"<<q[i];
}
cout<<"nrear is att"<<q[rear];
cout<<"nfront is att"<<q[front];
}
cout<<"n";
}
getch();

1. Table : School Bus
Rtno Area_covered Capacity Noofstudents Distance Transporter Charges
1 Vasantkunj 100 120 10 Shivamtravels 100000
2 HauzKhas 80 80 10 Anand travels 85000
3 Pitampura 60 55 30 Anand travels 60000
4 Rohini 100 90 35 Anand travels 100000
5 Yamuna Vihar 50 60 20 Bhalla Co. 55000
6 Krishna Nagar 70 80 30 Yadav Co. 80000
7 Vasundhara 100 110 20 Yadav Co. 100000
8 PaschimVihar 40 40 20 Speed travels 55000
9 Saket 120 120 10 Speed travels 100000
10 JankPuri 100 100 20 Kisan Tours 95000
(a) To show all information of students where capacity is more than the no of student in
order of rtno.
(b) To show area_covered for buses covering more than 20 km., but charges less then 80000.
(c) To show transporter wise total no. of students traveling.
(d) To show rtno, area_covered and average cost per student for all routes where average cost
per student is - charges/noofstudents.
(e) Add a new record with following data:
(11, “ Moti bagh”,35,32,10,” kisan tours “, 35000);
(f) Give the output considering the original relation as given:
(i) select sum(distance) from schoolbus where transporter= “ Yadav travels”;
(ii) select min(noofstudents) from schoolbus;
(iii) selectavg(charges) from schoolbus where transporter= “ Anand travels”;

(iv) select distinct transporter from schoolbus;
1.
(a)SELECT *,FROM School Bus,WHERE Capacity>Noofstudents,ORDER BY Rtno;
(b)SELECT Area_covered,FROM School Bus,WHEREArea_covered>20 AND
Charges<80000;
(c)SELECT Noofstudents,Transporter,FROM School Bus,GROUP BY Transporter;
(d)SELECT Rtno, Area_covered,Charges/Noofstudents,FROM School Bus;
(e) INSERT INTO School Bus,VALUES(11, “ Moti bagh”,35,32,10,” kisan tours “, 35000);
(f)
(i)50
(ii)40
(iii)81666.66
(iv)Shivamtravels
Anand travels
Bhalla Co.
Yadav Co.
Speed travels
Kisan Tours

2. TABLE : GRADUATE
S.NO NAME STIPEND SUBJECT AVERAGE DIV.
1 KARAN 400 PHYSICS 68 I
2 DIWAKAR 450 COMP. Sc. 68 I
3 DIVYA 300 CHEMISTRY 62 I
4 REKHA 350 PHYSICS 63 I
5 ARJUN 500 MATHS 70 I
6 SABINA 400 CEHMISTRY 55 II
7 JOHN 250 PHYSICS 64 I
8 ROBERT 450 MATHS 68 I
9 RUBINA 500 COMP. Sc. 62 I
10 VIKAS 400 MATHS 57 II
(a) List the names of those students who have obtained DIV 1 sorted by NAME.
(b) Display a report, listing NAME, STIPEND, SUBJECT and amount of stipend
received in a year assuming that the STIPEND is paid every month.
(c) To count the number of students who are either PHYSICS or COMPUTER SC
graduates.
(d) To insert a new row in the GRADUATE table:
(11,”KAJOL”, 300, “computer sc”, 75, 1)
(e) Give the output of following sql statement based on table GRADUATE:
(i) Select MIN(AVERAGE) from GRADUATE where SUBJECT=”PHYSICS”;
(ii) Select SUM(STIPEND) from GRADUATE WHERE div=2;
(iii) Select AVG(STIPEND) from GRADUATE where AVERAGE>=65;
(iv) Select COUNT(distinct SUBDJECT) from GRADUATE;
(f) Assume that there is one more table GUIDE in the database as shown below:
Table: GUIDE
MAINAREA ADVISOR
PHYSICS VINOD
COMPUTER SC ALOK
CHEMISTRY RAJAN
MATHEMATICS MAHESH

What will be the output of the following query?
SELECT NAME, ADVISOR FROM GRADUATE, GUIDE WHERE SUBJECT=
MAINAREA;
2.
(a) SELECT Name,FROMGraduate,WHEREDIV=’I’,ORDERBYName;
(b)SELECTName,STIPEND,Subject,STIPEND*12,FROMGraduate;
(c)COUNT(Name),FROM Graduate,WHERESubject= PhysicsORSubject=ComputerSc;
(d)INSERTINTOGraduate,VALUES(11,”KAJOL”,300, “computersc”, 75, 1);
(e)
(i)63
(ii)800
(iii)450
(iv)4
(f)
KARANVINOD

DIWAKARALOK
DIVYARAJAN
REKHAVINOD
ARJUNMAHESH
SABINARAJAN
JOHNVINOD
ROBERTMAHESH
RUBINAALOK
VIKASMAHESH

12th CBSE Practical File

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