CBSE Guess > Papers > Important Questions > Class XII > 2013 > Computer Science > Computer Science - by Mr. Sandip Kumar Srivastava

CBSE CLASS XII

Computer Science (C++ and Data Structure)

32. class Test
    { char paper[12];
    int marks;
    };  
    Rewrite the above class definition, by defining a default constructor that assign
    “computer” to paper and marks to 100.
33. Define a class BALANCED_MEAL in C++ with following description:
    Private Members:

    Access_no	Integer
    Food_Name	String of 25 characters
    Calories	Integer
    Food_type	String
    Cost	Float

    
    AssignAccess( ) Generates random numbers between 10 and 99 and return it.
    Public Members
• A function INTAKE( ) to allow the user to enter the values of Food_Name,
  Calories, Food_type, cost and call function AssignAccess( ) to assign Access_no.
• A function OUTPUT( ) to allow user to view the content of all the data members,   if the Food_type is Fruit.Otherwise display message, “Display only for fruit” 
Write a function that reads binary file CONSUMER.DAT containing records of above class, and copy those records to CONSUMERAREA.DAT , whose area is same as given by   user. Also, display the number of such records found.
34. Differentiate between an identifier and keywords.
35. Name the header files, to which following inbuilt function belong to:
    1. log10( )
    2. arc( )
36. What is Function Overloading? Give an example in C++ to illustrate the same.
37. In Object Oriented Programming, which concept is illustrated by Function1 and Function2 together? Write the statement to call these functions.
38. What is the scope of two data members of the class AirIndia? What does the scope of data members depend upon?
39. Define a class cricket in C++ with the following description:
    Private members:
    • Target_score of type integer
    • Overs_bowled of type integer
    • Extra_time of type integer
    • Penalty of type integer
    • Cal_penalty() a member function to calculate penalty as follows:

    If extra_time<=10, penalty=1
    If extra_time>10 but <=20 penalty=2, otherwise, penalty=5
    Public members:

    • A fuinction Extradata () to allow user to enter values for target_score, over_bowled, Extra_time.
    • A function DspData( ) to allow user to view the contents of all data members.
40. Write a function in C++ which accepts a 2D array of integers and its size as arguments and display the elements which lie on diagonals.
    [Assuming the 2D array to be a square matrix with odd dimension, i.e., 3x3, 5x5, etc..]
    Example, if the array contents is
    5          4          3         
    6          7          8
    1          2          9
    Output through the function should be :
    Diagonal One : 5 7 9
    Diagonal Two: 3 7 1
41. An array Arr[15][20] is stored in the memory along the row with each element occupying 4 bytes. Find out the Base Address and address of the element Arr[3][2], if the element [5][2] is stored at the address 1500.
42. Give the necessary declaration of queue containing integer. Write a user defined function in C++ to delete an integer from the queue. The queue is to be implemented as a linked list
43. Write a function in C++ to print the sum of all the values which are either divisible by 2 or are divisible by 3 present in a two-dimensional array passed as the argument to the function.
44. Evaluate the following postfix notation of expression:
    • 0 + 25 15 - * 30 /
45. Write a function in C++ to count the number of alphabets present in a textfile “Para.Txt”.
46. Write a function in C++ to add new objects at the bottom of a binary file “Student.Dat”, assuming the binary file is containing the object of the following class
    class STUD
    {
    int Rno;
    char Name[20];
    public:
    void Enter ()
    {
    cin>>Rno;
    gets(Name);
    }
    void Display()
    {
    cout<<Rno<<Name<<endl;
    }};

47. What do you mean by static variable? Explain with help of example.
48. Write the header files to which the following functions belong:
    1. getc ( )
    2. isalnum ( )
    3. scanf ( )
    4. getxy ( )
49. How member functions and non member functions differ?

Submitted By : Mr. Sandip Kumar Srivastava
Email : [email protected]