ASSIGNMENT -- DATA FILE HANDLING PART 2

DATA FILE HANDLING PART 2

Q 12    Following is the structure of each record in a data file named “Colony.dat”                                               

struct Colony

{

            char colony_code[10];

            char colony_name[10];

            int no_of_people;

};

            Wite a function to update the file with a new value of No_of_people. The value of colony_code and no_of_people  are read during the execution of the program.

Q 13     Assuming the class ZOO given below, write functions in C++ to perform following:

i.                    Write the objects of ZOO to a binary file.

ii.                  Read the objects of ZOO from binary file and display them on screen.

            class ZOO

            {

                        char location[20];

                        int no_of_animals[10];

                        public:

                                    void readdata()

                                    {

                                                cin>>location;

                                                gets(no_of_animals);

                                    }

                                    void writedata()

                                    {

                                                cout<

                                    }

            };                                                                     

ASSIGNMENT -- DATA FILE HANDLING

ASSIGNMENT – FILE HANDLING  CLASS XII A

Q1 Write a function count in C++ to count the no. of spaces in a text file “ memo.txt”.

Q2 Write a function count in C++ to count the no. of vowels  in a text file “ memo.txt”.

Q 3 Write a function count in C++ to count the presence of a word ‘do’ in a text file “ memo.txt”.

Q4 Write a function count in C++ to count and display  the no. of   lines start with ‘A’ in a file   “ school.txt”.

Q 5 Given a binary file game.dat which has following  structure type data

Struct game

{           int gcode; 

char gname[20];

char no_of_participant;

  }

(1) write a function that would copy those structures from game.dat to cricket.dat where gname is ‘cricket’.

(2) write a function that would update the value of no_of_participant in the file game.dat.

Q 6 Given a binary file phone.dat which has following  class type data

Class phonelist

{        char name[20];

char address[30];

char acode[5];

char pno[15];

public:

void register();

void show();

int checkcode(char ac[])

{

            return strcmp(areacode,ac);

}    

};

write a function that would copy those objects from phone.dat to phoneback.dat where acode is “del”.

Q 7 void main()

{       char ch=’A’;

       fstream file(data.dat”,ios::app);

        file<

        int p=file.tellg();

       cout<

}

what will be the output if the file content before the execution of the program is the string “ABC” (Note that “”are not the part of the file)

Q8 Given the binary file ITEM.DAT, containing the records of the following structure:  

struct item

{

int item_no;

char item_name[20];

int stock;

};

Implement the function AddStock( item x, int n), which updates a record by adding the existing stock for the item x in the file.

 Q 9 Write a function in c++ to read and display the records of computers that cost more than Rs. 20000 from the binary file “COMP.DAT”, assuming that the binary file is containing the objects of the following class :                                           

                                    class COMPUTER

                                                { int srno;

                                                char model[25];

                                                float price;

                                                public:

                                                            float Retpr( ) { return price; }

                                                            void Enter( ){ cin>>srno>>price; gets(model); }

                                                            void Display( ){ cout<

      Q 10  Write a function RevText() to read a text file “ Input.txt “ and Print each word in reverse   order .                                                                                                                   

               Example                    If value in text file is : INDIA IS MY COUNTRY

                                                    Output will be : AIDNI SI YM YRTNUOC

Q 11 Write a function in C++ to search for BookNo from a binary file “BOOK.DAT”, assuming the binary file is contained the objects of the following class:             

class BOOK

            {

                        int Bno; char Title [20];

                        public :

                        int Rbno ( ) { return Bno; }

                        void Enter ( ) { cin >> Bno; gets (Title); }

                        void Display ( ) { cout << Bno <

Assignment : ARRAY

                                     ASSIGNMENT : ARRAY

1 An array A [20][20] is stored in the memory along the column with each of the Element require 4 bytes. Find the address of A[10][12], if A[1][1] is stored in           location 1000.               

  2  Write a user defined function in C++  which accept a one d array and its size as argument and divide all the elements by 5 which are dividible by 5 and multiply other elements by 7.             

3 Two dimensional array ARR[8][7] having real numbers(double), is stored in the memory along the row, find out the memory location for the element ARR[2][4], if an element ARR[1][5] is stored at the memory location 1000.                 

4  An array S[40][30] is stored in the memory along the row with each of the element occupying 4 bytes, find out the memory location for the element S[15][5], if an element s[20][10] is stored at memory location 5700.                                                                                                                                                

5 Write UDF in C++ which accepts an integer array and its size as arguments/ parameters and assign the elements into a 2 D array of integers in the following format:

            If the array is 1,2,3,4,5.

             The resultant 2D array is given below

            1 0 0 0 0

            1 2 0 0 0

            1 2 3 0 0

            1 2 3 4 0

            1 2 3 4 5                                                                                                                                

6  Write UDF in C++ to print the row sum and column sum of a matrix.                                                                                            

7          An  array P[20][30] is stored in the memory along the column with each of the element occupying 4 bytes, find out the memory location for the element P[5][15], if an element P[2][20] is stored at the memory location 5000.                                   

8          Write a function in C++ which accepts a integer  array and its size as an

 arguments and arrange the array in reverse

 if initially array is

     4,2,5,1,6,7,8,12,10

The final array will be

    10,12,8,7,6,1,5,2,4

9          Write a function in C++ which accepts a integer  array and its size as an

 arguments and prints the output (using nested loops) in following format :

Example : if the array is having

1 2 4 5 9

Then the output should be 

1

2 2

4 4 4 4

5 5 5 5 5

9 9 9 9 9 9                                                                                          

10  An array A[10][20] is stored in the memory with each element occupying 2 bytes of storage. If the Base address of array in the memory is 800 , determine the location of A[9][10] when the array is stored as (i) Row Major (ii) column major.

11        Write a function in C++ to merge the contents of two sorted arrays A & B into third array C. Assuming array A is sorted in ascending order, B is sorted in descending order, the resultant array is required to be in ascending order.                                                                                                                                                                                      

12 Assume an array S of structure Student is to be arrange in descending order of marks. Write a function which will accept the required array and its size as argument and arrange the same with bubble sort.

The given structure is-

Struct Student

{

            Int rno;

            Char name[];

            Float marks;

};                                                         

Assignment Linked list , stack , queue

ASSIGNMENT STACK QUEUE LINKED LIST

1.   (A) Evaluate the following postfix notation of expression:                                                                            

20,30,+,50,40,-,*

(B) Write a function in C++ to perform Insert operation in a dynamically allocated Queue   

      containing names of students.           

   2     (A)  Write a function in C++ to delete a node containing names of student ,

from a dynamically allocated Queue of names implemented with the help

of following structure :                                                                            

struct student

{

            char name[20];

            student *next;

}*front , *rear;

(b)          Consider the following portion of a program , which implements a linked  stack for Library . Write the definition of function PUSH(),to insert a new node in the stack with required information                                              

struct Library

{         

           int id;

            char names[20];

            Library * next;           

};

class stack

{

            Library *top;

            public :

stack()

            {

            top=NULL;    

}

            void PUSH();

            void POP();

};

(c)          Convert the following infix expression into postfix. show the stack status

 after execution of each operation:                                                          

TRUE OR   FALSE AND   NOT    FALSE   OR  FALSE

3   (A)  Write a function in C++ to perform Push operation on a dynamically allocated Stack containing real numbers.                                                                                                                                                  

(b)  Evaluate the following postfix notation of expression:                                                                        

True, False, AND, True, True, NOT, OR, AND

 4. A ) Consider the following program for linked QUEUE:                                                   

struct NODE

{ int x;

float y;

NODE *next; };

class QUEUE

{ NODE *R,*F;;

 public :

            QUEUE( )

            {

             R=NULL;

             F=NULL;

           }

void INSERT( );

void DELETE( );

void Show( );

~QUEUE( ); };

            Define INSERT( ) & DELETE( ) functions outside the class.

 B ) Evaluate the following postfix expression using stack and show the contents after

execution of each operations                                                                                470,5,4,^,25,/,6,*,+,81,- 

 5.  (A) Define function stackpush( ) to insert nodes and stackpop( ) to delete nodes, for a linklist implemented stack having the following structure for each node:

            struct Node

            {           char name[20];        

                        int age;

                        Node *Link;

            };

            class STACK

            {           Node * Top;

                        Public:

                        STACK( ) { Top=NULL;}

                        void stackpush( );

                        void stackpop( );

                        ~STACK( );

            };                                                         

(B) Evaluate the following postfix expression using a stack and show the contents of stack after execution of each operation:

TRUE,FALSE, TRUE FALSE, NOT, OR, TRUE , OR,OR,AND

Structured Query Language

PPT of SQL