Computer Applications Guess Paper Class X – 2008 (2)

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Guess Paper – 2008

Class – X

Subject – Computer Applications

 

 

Time 2 Hrs.

 

 

This paper is divided into two sections Section A and Section B.

Section A is compulsory. Attempt all questions from it.

Answer any FOUR questions from Section B. The intended marks for each question is given in braces []

 

Section A –40marks

 

(Attempt all questions)

 

Q1. a. What is a compound statement? Give an example.

   b. State the difference between constructor and method.

   c. What do you understand by reference data type?

   d. What do you understand by main method?

   e. Name the three access specifiers.

 

Q2. a)  Rewrite the following using  relational operator.  5.

        int flag =0;

           for (i=2;i<n;i++)

             {

              if (n%i ==0)

                  flag =1;

}

if flag = 1

    String s = “Prime”;

b) Fill in the blanks :-                             5

     public static void search(int  !1!., int n, int v)

{

   int   j,flag,p

   for ( !2!)

   {

 if (a[j] = =v)

   !4.!

   !5!

}

 if (flag = =1)

System.out.print(“position “+p)

}

 

Q3.  a) Give output                                                        4.

                  public static void main ( )

                        {           int i , r ;

                                    for ( i = 1 ; i <= 5 ; i ++ )

                                    {           r = tot ( i ) ;

                                                System.out.println(” The total is = “+ r) ;  }}

                        Public static int  tot ( int x )

                        {           int s = 0;

                                    s + = x ;

                                    return (s);}

  b) Which element is num[5] of the array num ?              2

 c)  Explain working of following operator with example   4.                                           

      i) >>>      ii) Bitwise xor

 

 

Q4. a) Difference between indexOf and  lastIndexOF() function ? 2

   b)  What do you understand by function signature ? 2

   c) if x = 5 then find the value of    3x2 = 6

      i) x<< 2,  b) x’  c) y = ( x%2 ==0)? 1: 0

 

 

SECTION-B [60 Marks]

 

 

Q 6) Create class Sortsearch where the data members and methods are as follows:-

Instance variables                                  :           int arr[10] , no

Methods:

void accept()                                         :           Accept 10 numbers from the user.

void sort()                                             :           Sort the numbers in ascending order either

using bubble sort logic or selection sort

logic .(Mention the name of the logic)

 

Q 7) Class MyArray contains the employee code of 100 employees. Some of the member function/ data members are given below:

 

          Class name                     : MyArray

         Data member                   : arr[] – integer

         Member Function:

         MyArray()             - to assign the code to 0.

         void fillarray()                   - to input the code in the arr[]

         void sortArr()                    - to sort the array variable using selection sort technique.

         int binarySearch(int code) - to search and return 1 if an employee code is found in the array object else return 0.

               Write the class details. You do not need to write the main function.

 

Q8). Using function prime wap to print the twin primes between a range

Class name twin

Constructor  twin()

Data members  upper, lower.

Member functions         checkprime() //checks whether a number is prime or not

                                    Twinprime()     // displays twin prime between  the upper and lower range.   Program should have main method and use object to call the member functions. [15]

 

Q9).  Wap to check whether a matrix is symmetric or not. A symmetric matrix is exactly same with its transpose. Use main method.

 

  Q10). Write a program to accept any sentence and reverse each word of the sentence.

   Input  there  are five boys

    Output ereht era evif syob.

 

Q11).    A class Text is designed to handle text related operations. Some functions of class Text are as follows:

            Class                                        : Text

            Data Member                :  txt – to store the given string. (maximum length – 80)

 

            Member Function

            Text()                                        : constructor

            void readText()              : reads the given string from the input

            char charAt(int i)                        : returns the character at position i of the string

            int length()                                 : returns the length of the string

            int noOf Words()                       : returns the number of words in the text

            int noOfWhiteSpace()    : returns the total number of white spaces in the text

 

 

 

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