CBSE Class 12 Computer Science Question Paper 2013 Set 03

CBSE Class 12 Computer Science Question Paper 2013 (3). 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) What is the difference between call by value and call by reference ? Give an example in C++ illustrate both. 

(b) Write the names of the header files to which the following belong : 

(i) puts()

(ii) sin()

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

       #include [iostream.h]

       #include [stdio.li]

       class Employee

         {

            int EmpId = 901;

            char EName[20];

            public

            Employee(){}

            void Joining() {cin>>EmpId; gets (EName);}

            void List() {cout<<EmpId<<“ : “ <<EName<<endl;}

         };

                  void main()

              {

                   Employee E;

                  Joining. E ();

                  E. List ()

              }

(d) Find the output of the following program : 

        #include<iostream.h>

          void main()

          {

               int X[] = {10, 25, 30, 55, 110};

               int *p = X;

                while (*p < 110)

            {

                  if (*p%3 != 0)

                  *p = *p + 1;

                    else

                    *p = *p + 2;

                       p++;

              }

                      for (int I = 4; I>=1 ; 1 I– –)

                {

                        cout<<X [I] << “*” ;

                        if (I%3 == 0) cout<<endl;

                 }

                      cout<<X [0]  * 3<<endl;

               }

2.(a) What are candidate keys in a table ? Give s suitable example of candidate keys in a table.

    (b) What is the difference between Star Topology and Bus Topology of network ?

3.(a) What is the difference between Acutal Parameter and Formal Parameter ? Give an example in C++ to illustrate both types of parameters. 

   (b) Write the names of the header files to which the following belong : 

     (i) setw()

     (ii) sqrt()

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

            include <iostream.h>

            include <stdio.h>

            class MyStudent

                {

                   int StudentId=1001;

                   char Name[20];

                    public

                   MyStudent(){}

                   void Register() {cin>>StudentId; gets (Name);}

                   void Display() {cout<<StudentId<<“:”<<Name<<endl;}

                 };

                    void main()

                  {

                    MyStudent MS;

                    Register. MS();

                    MS. Display();

                      }

 Please click the link below to download pdf file of CBSE Class 12 Computer Science Question Paper 2013 (3).