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XII CBSE Previous Year Question Paper. QUESTION NO 1 (D) 2 or 3 Marks. 1. (d) Find the output of the following program : Delhi 2006 3 #include<iostream.h> #include<string.h> class state { char *state_name; int size; public:

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XII CBSE Previous Year Question Paper

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Xii cbse previous year question paper

XII CBSE Previous Year Question Paper

QUESTION NO

1 (D)

2 or 3 Marks


Xii cbse previous year question paper

1. (d) Find the output of the following program :

Delhi 2006 3

#include<iostream.h>

#include<string.h>

class state

{ char *state_name;

int size;

public:

state( ); { size=0; state_name=new char[size+1]; }

state(char *s)

Contd…


Xii cbse previous year question paper

{ size = strlen(s) ; state_name = new char[size+1];

strcpy(state_name,s);

}

void display( ) {cout<<state_name<<endl;}

void Replace (state & a, state & b)

{ size = a.size + b.size;

delete state_name;

state_name = new char[size+l];

strcpy(state_name, a.state_name);

strcat(state_name, b.state_name);

}

}; contd…


Xii cbse previous year question paper

void main( )

{ char * temp = “Delhi”;

state state1 (temp), state2(“Mumbai”), state3(“Nagpur”), S1, S2;

S1.Replace(state1, state2);

S2. Replace(S1, state3);

S1.display( );

S2.display( );

}


Xii cbse previous year question paper

Answer:

(d) DelhiMumbai

DelhiMumbaiNagpur

(3 full marks for identifying error in definition of the constructor

state() in Line 7)

OR

(3 marks for the correct lines of output)

OR

(2 marks for any one correct line of output)

OR

(1 Mark for showing the output starting with Delhi)


Xii cbse previous year question paper

2 (d) Find the output of the following program : OD 20063

#include<iostream.h>

#include<string.h>

class student

{ char *name;

int l;

public:

student() { l=0; name=new char[1+1]; }

student(char *s)

{ l=strlen(s); name=new char[1+1];

strcpy (name,s);

} contd…


Xii cbse previous year question paper

void display() { cout<<name<<endl;}

void manipulate(student & a, student & b)

{ l=a.l + b.l;

delete name;

name=new char[l+l];

strcpy(name, a.name);

strcat(name, b.name);

}

};


Xii cbse previous year question paper

void main()

{ char * temp =''Jack'';

student name1(temp), name2('' Jill''), name3('' John'' ),S1,S2;

S1.manipulate(name1,name2);

S2.manipulate(S1,name3);

S1.display();

S2.display();

}


Xii cbse previous year question paper

Answer :

(d) JackJill

JackJillJohn

(2 marks for any one correct line)

(Full 3 marks for both lines correct)

(½ mark to be deducted from full 3 marks, if endl is not considered)


Xii cbse previous year question paper

3 (d) Find the output of the following program : Delhi 2007 2

#include<iostream.h>

void main()

{

int Numbers[] = {2,4,8,10};

int *ptr = Numbers;

for (int C = 0; C<3; C++)

{

cout<< *ptr << [email protected];

ptr++;

}


Xii cbse previous year question paper

3 (d) Find the output of the following program : Delhi 2007 2

cout<<endl;

for(C = 0; C<4; C++)

{

(*ptr)*=2;

--ptr;

}

for(C = 0; C<4; C++)

cout<< Numbers [C]<< “#”;

cout<<endl;

}


Xii cbse previous year question paper

(d) 2 @ 4 @ 8 @

4 # 8 # 16 # 20 #

(1 Mark for each correct line of output)

Note:

· ½ Mark to be deducted for missing symbols in each line of output

· ½ Mark to be deducted if endl is not considered in the output

· As Borland C++ Compiler declares for loop variable locally,the program will result in syntax errors. So, any studentspecifying Variable C not declared OR mentioning that the program will not RUN


Xii cbse previous year question paper

4 (d) Find the output of the following program : OD 2007 2

# include < iostream.h>

void main ()

{

intArray[] = {4,6,10,12};

int *pointer = Array ;

for (int I=1 ; I<=3 ; I++)

{

cout<<*pointer<<#”;

pointer ++;

}


Xii cbse previous year question paper

4 (d) Find the output of the following program : OD 2007 2

cout<<endl;

for (I=1 ; I<=4 ; I++)

{

(*pointer)*=3 ;

-- pointer;

}

for(I=l; I<5; I + + )

cout << Array [I-1] << [email protected];

cout << endl;

}


Xii cbse previous year question paper

(d) 4 # 6 # 10 #

12 @ 18 @ 30 @ 36 @

(1 Mark for each correct line of output)

Note:

· ½ Mark to be deducted for missing symbols in the output

· ½ Mark to be deducted if endl is not considered in the output

· As Borland C++ Compiler declares for loop variable locally,the program will result in syntax errors. So, any student specifying Variable I not declared OR mentioning that the program will not RUN due to incorrect syntax should be awarded full 2 Marks


Xii cbse previous year question paper

5 (d) Find the output of the following program: Delhi 2008 3

#include<iostream.h>

#include<ctype.h>

void main ( )

{

char Text [ ] = [email protected]!”;

for (int I = 0; Text (I)! = ‘\0’; 1++)

{

if (!isalpha (Text[I]))

Text [I] = ‘*’;

else if (isupper (Text[I]))

Text [I] = Text [I] + 1 ;


Xii cbse previous year question paper

5 (d) Find the output of the following program: Delhi 2008 3

Text [I] = Text [I] + 1 ;

else

Text (I) = Text [I+ 1];

}

cout<<Text;

}


Xii cbse previous year question paper

Ans:

Nnd@*Xrk!*

(½ Mark for N in the 1st position)

(½ Mark for nd in the 2nd and 3rd position)

(½ Mark for @ in the 4th position)

(½ Mark for * in the 5th position)

(½ Mark for Xrk!)

(½ Mark for * at the end)

332

OR

(Fu1l 3 Marks If error is mentioned in the code for Text (I) after last else)


Xii cbse previous year question paper

6. (d) Find the output of the following program : OD 2008 3

#include<iostream.h>

#include<ctype.h>

void main ( )

{

char Mystring[ ] [email protected]!” ;

for(int I = 0; Mystring [I] ! =’ \0'; I++)

{

if (!isalpha (Mystring[I]))

Mystring [I] = ‘*’;

else if (isupper (Mystring[I]))


Xii cbse previous year question paper

6. (d) Find the output of the following program : OD 2008 3

Mystring [I] = Mystring[I] +1;

else

Mystring [I] = Mystring [I+1];

}

cout<<Mystring;

}


Xii cbse previous year question paper

Ans:

Xat@*PVUQVU*

(½ Mark for X in the first position)

(½ Mark for at in the 2nd & 3rd positions)

(½ Mark for @ in the 4th position)

(½ Mark for * in the 5th position)

(½ Mark for PVUQvu)

(½ Mark for * at the end)


Xii cbse previous year question paper

7 (d) Find the output of the following program : Delhi 2009 3

#include<iostream.h>

void main ( )

{

int X[ ] = {10, 25, 30, 55, 100};

int *p = X ;

while ( *p < 110)

{

if (*p%3 ! = 0)

*p = *p + 1 ;

else

*p = *p + 2 ;


Xii cbse previous year question paper

7 (d) Find the output of the following program :Delhi 2009 3

p++;

}

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

{

cout << X[I] << “*” ;

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

}

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

}


Xii cbse previous year question paper

  • Ans

    • 1110*56*

    • 32*26*33

  • (½ Mark for each correct value)

  • (½ Mark for all correct endl and *)


  • Xii cbse previous year question paper

    8 (d) Find the output of the following program: OD 2009 3

    #include<iostream.h>

    void main ( )

    {

    int A[ ] = {10, 15, 20, 25, 30}

    int *p = A;

    while (*p < 30)

    {

    if (*p%3 ! = 0)

    *p = *p + 2 ;

    else

    *p = *p + 1;


    Xii cbse previous year question paper

    8 (d) Find the output of the following program: OD 2009 3

    p++;

    }

    for (int J = 0; J<=4; J++)

    {

    cout << A[J] << “*” ;

    if ( J%3 = = 0) cout<<end1;


    Xii cbse previous year question paper

    Ans

    12*

    16*22*27*

    30*90

    (1 Mark for each line with correct values)

    Note:

    Deduct ½ Mark if any/all ‘*’ missing

    Deduct ½ Mark if endl is not considered at the right positions


    Xii cbse previous year question paper

    9 (d) Find the output of the following program : Delhi 2010 3

    #inc1ude <iostream.h>

    struct POINT

    {int X, Y, Z;};

    void StepIn(POINT & P, int Step=1)

    {

    P.X+=Step;

    P.Y -=Step;

    P.Z+=Step;

    }


    Xii cbse previous year question paper

    9 (d) Find the output of the following program : Delhi 2010 3

    void StepOut(POINT & P, int Step=1)

    {

    P.X-=Step;

    P.Y+=Step;

    P.Z–=Step;

    }


    Xii cbse previous year question paper

    9 (d) Find the output of the following program : Delhi 2010 3

    void main ( )

    {

    POINT P1={15, 25, 5}, P2={10, 30, 20};

    StepIn(P1);

    StepOut(P2,4);

    cout<<P1.X<<“,”<<P1.Y<<“,”<<P1.Z<<endl;

    cout<<P2.X<<“,”<<P2.Y<<“,”<<P2.Z<<endl;

    StepIn(P2,12);

    cout<<P2.X<<“,”<<P2.Y<<“,”<<P2.Z<<endl;

    }


    Xii cbse previous year question paper

    • Ans.

      • 16, 24, 6

      • 6, 34, 16

      • 18, 22, 28

  • (1 Mark for each line with -correct values)

  • OR

  • (½ Mark for any two correct values in each line)

  • Note:

  • Deduct (½ Mark if any/all ‘,’ missing

  • Deduct (½ Mark if endl is not considered at the right positions


  • Xii cbse previous year question paper

    10 (d) Find the output of the following program: OD 2010 3

    #include <iostream.h>

    struct THREE_D

    {int X,Y,Z;};

    void MoveIn(THREE_D &T, int Step=l)

    }

    T.X+=Step;

    T.Y-=Step;

    T.Z+=Step

    }


    Xii cbse previous year question paper

    10 (d) Find the output of the following program: OD 2010 3

    void MoveOut(THREE_D &T, int Step=l)

    {

    T.X-=Step;

    T.Y+=Step;

    T.Z-=Step;

    }


    Xii cbse previous year question paper

    10 (d) Find the output of the following program: OD 2010 3

    void main ()

    {

    THREE_D Tl={lO,20,5},T2={30,lO,40};

    MoveIn(T1);

    MoveOut(T2,5);

    cout<<Tl.X<<“,”<<Tl.Y<<“,”<<T1.Z<<endl;

    cout<<T2.X<<“,”<<T2.Y<<“,”<<T2.Z<<endl;

    MoveIn(T2,l0);

    cout<<T2.X<<“,”<<T2.y<<“,”<<T2.Z<<endl;

    }


    Xii cbse previous year question paper

    • Ans.

      • 11, 19, 6

      • 25, 15, 35

      • 35, 5, 45

  • (1 Mark for each line with correct values)

  • OR

  • (½ Mark for any two correct values in each line)

  • Note:

  • Deduct ½ Mark if any/all ',' missing

  • Deduct ½ Mark if endl is not considered at the right positions


  • Xii cbse previous year question paper

    11 (d) Find the output of the following program: Delhi 2011 3

    #inc1ude<iostream.h>

    void ChangeArray(int Number, int ARR[ ], int Size)

    {

    for (int L =0; L<Size; L++)

    if (L<Number)

    ARR [L] +=L;

    e1se

    ARR [L] *=L;

    }


    Xii cbse previous year question paper

    11 (d) Find the output of the following program: Delhi 2011 3

    void Show (int ARR [ ], int Size)

    {

    for (int L=0; L<Size; L++)

    (L%2!=0) ?cout<<ARR[L] <<"#": cout<<ARR[L]<<end1 ;

    }

    void main ( )

    {

    int Array [ ] = {30, 20, 40, 10, 60, 50};

    ChangeArray (3, Array, 6) ;

    Show (Array, 6) ;

    }


    Xii cbse previous year question paper

    • Ans

      • 30

      • 21#42

      • 30#240

      • 250#

  • (½ Mark for each correct value)

  • Note:

  • Deduct ½ Mark for not writing # at proper places

  • Deduct ½ Mark for not considering endl at proper places


  • Xii cbse previous year question paper

    12 (d) Find the output of the following program: OD 2011 3

    #include <iostream.h>

    void SwitchOver(int A [ ], int N, int Split)

    {

    for (int K=0 ; K<N; K++)

    if (K<Split)

    A(K]+ =K;

    else

    A [K]*=K;

    }


    Xii cbse previous year question paper

    12 (d) Find the output of the following program: OD 2011 3

    void Display (int A [ ], int N)

    {

    for (int K=0 ; K<N ; K++)

    (K%2==0)? cout<<A[K]<<"%":cout<<A(K]<<end1;

    }

    void main ( )

    {

    int H[ ]= {30,40,50,20,10,5};

    SwitchOver (H, 6, 3);

    Display (H, 6);

    }


    Xii cbse previous year question paper

    • Ans

      • 30%41

      • 52%60

      • 40%25

  • (1 Mark for each line with correct values)

  • Note:

  • Deduct ½ Mark if any/all '% t missing

  • Deduct ½ Mark if endl is not considered at the right positions


  • Xii cbse previous year question paper

    13 (d) Find the output of the following program: SP 2010 SET I 3

    #include <iostream.h>

    struct GAME

    { int Score, Bonus;};

    void Play(GAME &g, int N=10)

    {

    g.Score++;g.Bonus+=N;

    }


    Xii cbse previous year question paper

    13 (d) Find the output of the following program: SAMPLE PAPER 2010 SET I 3

    void main()

    {

    GAME G={110,50};

    Play(G,10);

    cout<<G.Score<<":"<<G.Bonus<<endl;

    Play(G);

    cout<<G.Score<<":"<<G.Bonus<<endl;

    Play(G,15);

    cout<<G.Score<<":"<<G.Bonus<<endl;

    }


    Xii cbse previous year question paper

    • Ans: (d) 3

      • 111:60

      • 112:70

      • 113:85

  • (1 Mark for each correct line of output)


  • Xii cbse previous year question paper

    14 (d) Find the output of the following program: SAMPLE PAPER 2010 SET II 3

    #include <iostream.h>

    void Changethecontent(int Arr[ ], int Count)

    {

    for (int C=1;C<Count;C++)

    Arr[C-1]+=Arr[C];

    }

    void main()

    {

    int A[]={3,4,5},B[]={10,20,30,40},C[]={900,1200};

    Changethecontent(A,3);


    Xii cbse previous year question paper

    14 (d) Find the output of the following program: SAMPLE PAPER 2010 SET II 3

    Changethecontent(B,4);

    Changethecontent(C,2);

    for (int L=0;L<3;L++) cout<<A[L]<<'#';

    cout<<endl;

    for (L=0;L<4;L++) cout<<B[L] <<'#';

    cout<<endl;

    for (L=0;L<2;L++) cout<<C[L] <<'#';

    }


    Xii cbse previous year question paper

    • d)

      • 7#9#5#

      • 30#50#70#40#

      • 2100#1200#

  • (1 Mark for each line of output)


  • Xii cbse previous year question paper

    15 SAMPLE PAPER 2012 SET I


    Xii cbse previous year question paper

    15 SAMPLE PAPER 2012 SET I


    Xii cbse previous year question paper

    16 SAMPLE PAPER 2012 SET II


    Xii cbse previous year question paper

    16 SAMPLE PAPER 2012 SET II


    Xii cbse previous year question paper

    17 (d)Find the output of the following program:

    SAMPLE PAPER 2009 SET I 3

    #include <iostream.h>

    struct PLAY

    { int Score, Bonus;};

    void Calculate(PLAY &P, int N=10)

    {

    P.Score++;P.Bonus+=N;

    }

    void main()

    {

    PLAY PL={10,15};

    Calculate(PL,5);


    Xii cbse previous year question paper

    17 (d)Find the output of the following program:

    SAMPLE PAPER 2009 SET I 3

    cout<<PL.Score<<”:”<<PL.Bonus<<endl;

    Calculate(PL);

    cout<<PL.Score<<”:”<<PL.Bonus<<endl;

    Calculate(PL,15);

    cout<<PL.Score<<”:”<<PL.Bonus<<endl;

    }


    Xii cbse previous year question paper

    • 17 SAMPLE PAPER 2009 SET I

    • Answer:

      • 11:20

      • 12:30

      • 13:45

  • (1 Mark for each correct line of output)

  • Note:

  • Deduct ½ Mark for not showing : in the output

  • Deduct ½ Mark for not considering endl


  • Xii cbse previous year question paper

    18 (d)Find the output of the following program: SAMPLE PAPER 2009 SET II3

    #include <iostream.h>

    void Changethecontent(int Arr[], int Count)

    {

    for (int C=1;C<Count;C++)

    Arr[C-1]+=Arr[C];

    }


    Xii cbse previous year question paper

    18 (d)Find the output of the following program:SAMPLE PAPER 2009 3

    void main()

    {

    int A[]={3,4,5},B[]={10,20,30,40},C[]={900,1200};

    Changethecontent(A,3);

    Changethecontent(B,4);

    Changethecontent(C,2);

    for (int L=0;L<3;L++)


    Xii cbse previous year question paper

    18 (d)Find the output of the following program:SAMPLE PAPER 2009 SET II 3

    cout<<A[L]<<’#’;

    cout<<endl;

    for (L=0;L<4;L++) cout<<B[L] <<’#’;

    cout<<endl;

    for (L=0;L<2;L++) cout<<C[L] <<’#’;

    }


    Xii cbse previous year question paper

    • 18 SAMPLE PAPER 2009 SET II

    • Answer:

      • 7#9#5#

      • 30#50#70#40#

      • 2100#1200#

  • (1 Mark for each correct line of output)

  • Note:

  • Deduct ½ Mark for not showing : in the output

  • Deduct ½ Mark for not considering endl


  • Xii cbse previous year question paper

    THANK YOU


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