CBSE Class 12 Computer Science Question Paper 2013 (4)

CBSE Class 12 Computer Science Question Paper 2013 (4). Students can download the last year question papers using the link below. Free download of examination question papers with solutions.Last 10 year question papers should be practised to get better marks in examinations.

1. (a) Differentiate between a Logical Error and Syntax Error. Also give suitable examples of each in C++. 

(b) Name the header file(s) that shall be needed for successful compilation of the following C++ code : 

     void main( )

    {

         char Text[40];

         strcpy(Text,”AISSCE”);

         puts(Text);

       }

(c) Rewrite the following program after removing the syntactical error(s), if any. Underline each correction. 

       #include <iostream.h>

       const int Size 5;

       void main()

       {

          int Array[Size];

          Array = {50,40,30,20,10};

          for(Ctr=0; Ctr<Size; Ctr++)

          cout>>Array[Ctr];

         }

2. (a) Differentiate between Protected and Private members of a class in context of Inheritance using C++

(b) Write a function in C++ which accepts an integer array and its size.as arguments and replaces elements having even values with its half and elements having odd values with twice its value. 

Example : if an array of five elements initially contains the elements as

3, 4, 5, 16, 9

then the function should rearrange the content of the array as

6, 2, 10, 8, 18

(c) 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 Arr[5][2] is stored at the address 1500.

(d) Write a function in C++ to delete a node containing customer’s information, from a dynamically allocated Queue of Customers implemented with the help of the following structure :   

       struct Customer

       {

            int CNo;

            char CName[20];

            Customer *Link;

          };

(e) Write a function in C++ which accepts a 2D array of integers and its size as arguments and displays the elements of middle row and the elements of middle column. 

[Assuming the 2D Array to be a square matrix with odd dimension

i.e. 3×3, 5×5, 7×7 etc...]

Example, if the array content is

3 5 4

7 6 9

2 1 8

Output through the function should be :

Middle Row : 7 6 9

Middle Column : 5 6 1

(f) Evaluate the following postfix notation of expression : 

15 3 2 + / 7 + 2 *

Please click the link below to download pdf file of CBSE Class 12 Computer Science Question Paper 2013 (4).