Q - Computer Tuitions · Web viewSTRING Word=”CRACKAJACK”; MIXITNOW(Word); cout

www.computerindia.co.in CBSE Question Output Questions

CBSE 2018(a) Find and write the output of the following C++ program code: [3]

Note: Assume all required header files are already included in the program.void Revert(int &Num, int Last=2){

Last = (Last%2==0)?Last+1: Last-1;for(int C=1; C<=Last; C++)

Num+=C;}void main(){

int A=20, B=4;Revert(A,B);cout<<A<<”&”<<B<<endl;B--;Revert(A,B);cout<<A<<”#”<<B<<endl;Revert(B);cout<<A<<”#”<<B<<endl;

}

(b) Find and write the output of the following C++ program code:Note: Assume all required header files are already included in the program.#define Modify(N) N*3+10void main(){

int LIST[]={10,15,12,17};int *P=LIST, C;for(C=3; C>=0; C--)

LIST[C] = Modify(LIST[I]);for(C=0; C<=3; C++){

cout<<*P<<”:”;P++;

}}

(c) Look at the following C++ code and find the possible output(s) from the outputs (i) to (iv) following it. Also, write the highest and lowest values that can be assigned in the array A.Note: Assume all the required header files are already being included in the code. The function random(n) generates an integer between 0 and n-1.void main(){

randomize();int A[4], C;

By Kanhaya Sir Mobile No.: 9868772318Page 1 of 20

http://www.computerindia.co.in/


for(C=0; C<4; C++)A[C] = random(C+1)+10;

for(C=3; C>=0; C--)cout<<A[C]<<”@”;

}

(i) (ii)13@10@11@10@ 15$14$12$10$(iii) (iv)12@11@13@10@ 12@11@10@10@

CBSE 2017(a) Find and write the output of the following C++ program code : 2

Note : Assume all required header files are already included in the program.

#define Big(A,B) (A>B)?A+1:B+2void main(){

char W[] = “Exam”;int L=strlen(W);for(int i=0; i<L-1; i++)

W[i] = Big(W[i], W[i+1]);cout<<W<<endl;

}(b) Find and write the output of the following C++ program code : 3 Note : Assume all required header files are already included in the program.

void main(){

int A[] = {10,122,15,17,20,30};for(int i=0; i<6; i++){

if(A[i]%2==0)A[i] /= 2;

else if(A[i]%3==0)A[i] /= 3;

if(A[i]%5==0)A[i] /= 5;

}for(i=0; i<6; i++)

cout<<A[i]<<”#”;}

(c) Look at the following C++ code and find the possible output(s) from the options (I) to (iv) following it. Also, write the maximum values that can be assigned to each of the variables R and C.

Note: 2




Assume all required header files are already being included in the code. The function random(n) generates a integer between 0 to n-1.

void main(){

randomize();int R=random(3), C=random(4);int MAT[3][3] = {{10,20,30},{20,30,40},{30,40,50}};for(int I=0; I<R; I++){

for(int J=0; J<C; j++)cout<<MAT[I][J]<<” “;

cout<<endl;}

}(i) (ii)

10 20 3020 30 4030 40 50

10 20 3020 30 40

(iii) (iv)

10 2020 30

10 2020 3030 40

CBSE 2016(a) Find and write the output of the following C++ program code : 2 Note : Assume all required header files are already included in the program. typedef char STRING[80]; void MIXITNOW(STRING S) { int Size=strlen(S);

for(int I=0;I<Size–1;I+=2) {

char WS=S[I]; S[I]=S[I+1]; S[I+1]=WS;

} for(I=1;I<Size;I+=2) if(S[I]>=’M’ && S[I]<=’U’) S[I]=’@’; } void main() { STRING Word=”CRACKAJACK”; MIXITNOW(Word); cout<<Word<<endl;




} (e) Find and write the output of the following C++ program code : 3 Note : Assume all required header files are already being included in the program. class Stock {

long int ID; float Rate; int Date;

public: Stock(){ID=1001;Rate=200;Date=1;} void RegCode(long int I,float R) {

ID=I; Rate=R; } void Change(int New,int DT) { Rate+=New; Date=DT; } void Show() { cout<<”Date :”<<Date<<endl; cout<<ID<<”#”<<Rate<<endl; } }; void main() {

Stock A,B,C; A.RegCode(1024,150); B.RegCode(2015,300); B.Change(100,29); C.Change(–20,20); A.Show(); B.Show(); C.Show(); }

(c) Look at the following C++ code and find the possible output(s) from the options (i) to (iv) following it. Also, write the maximum and the minimum values that can be assigned to the variable CHANGER. 2

Note : • Assume all the required header files are already being included in the code. • The function random(n) generates an integer between 0 and n – 1 void main() {




randomize(); int CHANGER; CHANGER=random(3); char CITY[][25]={“DELHI”,”MUMBAI”,”KOLKATA”,”CHENNAI”}; for(int I=0;I<=CHANGER;I++) { for(int J=0;J<=I;J++) cout<<CITY[J]; cout<<endl; } }




(i) (ii)

DELHI DELHIMUMBAI DELHIMUMBAIKOLKATA DELHIMUMBAIKOLKATACHENNAI

DELHIDELHIMUMBAIDELHIMUMBAIKOLKATA

(iii) (iv)

MUMBAI MUMBAIKOLKATA MUMBAIKOLKATACHENNAI

KOLKATAKOLKATACHENNAI

CBSE 2015(a) Write the output of the following C++ program code:Note: Assume all required header files are already being included in the program.void Position(int & C1, int C2=3){C1+=2;C2 +=4;

} void main(){ int P1=20, P2=4;

Position(P1);cout<<P1<<”,”<<P2<<endl;Position(P2,P1);cout<<P1<<”,”<<P2<<endl;

}(b) Write the outout of the following C++ program code:Note: Assume all required header files are already being included in the program.class Calc{

char Grade;int Bonus;

public:Calc() { Grade='E'; Bonus=0; }void Down(int G){

Grade -= G;}void Up(int G){

Grader += G;Bonus++;

}




void Show(){

cout<<Grade<<”#”<<Bonus<<endl;}

};void main(){

Calc C;C.Down(2);C.Show();C.Up(7);C.Show();C.Down(2);C.Show();

}(c) Study the following program and select the possible output(s) from the option (I) to (iv) following it. Also, write the maximum and the minimum values that can be assigned to the variable NUM.- Assume all required header files are already being included in the program. random(n) function generates an integer between 0 to n-1.void main(){

randomize);int NUM;NUM = random(3) + 2;char TEXT[]=”ABCDEFGHIJK”;for(int I=1; I<=NUM; I++){

for(int J=NUM; J<=7; J++)cout<<TEXT[J];

cout<<endl;}

}(I) FGHI (ii) BCDEFGH (iii) EFGH (iv) CDEFGH (II) FGHI BCDEFGH EFGH CDEFGH

FGHI EFGH FGHI EFGH

CBSE 20141. (a) Obtain the output from the following C++ program as expected to appear on the

screen after its executionImportant Note:- All the desired header files are already included in the code, which are required to

run the code.void main(){

char *String=”SARGAM”;




int *Ptr, A[] = {1, 5, 7, 9};Ptr = A;cout<<*Ptr<<String<<endl;String++;Ptr+=3;cout<<*Ptr<<String<<endl;

}(b) Obtain the output of the following C++ program, which will appear on the screen after its execution.Important Note:- All the desired header files are already included in the code, which are required to

run the code.class Player{

int Score, Level;char Game;

public:Player(char GGame = ‘A’){

Score = 0;Level = 1;Game = GGame;

}void Start(int SC);void Next();void Disp(){

cout<<Game<<”@”<<Level<<endl;cout<<Score<<endl;

}};void main(){

Player P, Q ( ‘B’ );P.Disp();Q.Start(75);Q.Next();P.Start(120);Q.Disp();P.Disp();

}void Player :: Next(){

Game = (Game == ‘A’) ? ‘B’ : ‘A’;}void Player :: Start(int SC){




Score += SC;If(Score>=100)

Level = 3;else if(Score>=50)

Level = 2;else

Level = 1;}(b) Read the following C++ code carefully and find out, which out of the given options (i) to (iv) are expected correct output(s) of it. Also, write the maximum and minimum value that can be assigned to the variable Start used in the code:void main(){

int Guess[4] = {200, 150, 20, 250};int Start = random(2) + 2;for(int C=Start; C<4; C++)

cout<<Guess[C]<<”#”;}

(i) 200# 150# (iii) 150#20#250#(ii) 150#20# (iv) 20#250#

CBSE 20132. (a) Observe the following C++ code carefully and obtain the output, which will appear on

the screen after execution of it.Important Note:- All the desired header files are already included in the code, which are required to

run the code.void main(){

char *String = “SHAKTI”;int *Point, Value[ ] = { 10, 15, 70, 19};Point = Value;cout<<*Point<<String<<endl;String++;Point++;cout<<*Point<<String<<endl;

}(b) Observe the following C++ code carefully and obtain the output, which will appear

on the screen after execution of it.#include<iostream.h>class Aroundus{

int Place, Humidity, Temp; public:

Aroundus(int P=2){

Place = P;




Humidity = 60;Temp = 20;

}void Hot(int T){

Temp += T;}void Humid(int H){

Humidity += H;}void JustSee(){

cout<<Place<<”:”<<Temp<<”&”<<Humidity<<”%”<<endl;}

};void main(){

Aroundus A, B(5);A.Hot(10);A.JustSee();B.Humid(15);B.Hot(2);B.JustSee();A.Humid(5);A.JustSee();

}(c) Based on the following C++ code, find out the expected correct output(s) from the

options (i) to (iv). Also, find out the minimum and the maximum value that can be assigned to the variable Trick used in the code at the time when value of Count is 3:void main(){

char Status[][10] = { “EXCEL”, “GOOD”, “OK”};int Turn=10, Trick;for (int Count=1; Count<4; Count++){

Trick = random(Count);cout<<Turn-Trick<<Status[Trick]<<”#”;

}}(i) 10EXCEL#10EXCEL#8OK#(ii) 10EXCEL#8OK#9GOOD#(iii) 10EXCEL#9GOOD#10EXCEL#(iv) 10EXCEL#10GOOD#8OK#




CBSE 20123. (a) Find the output of the following program:

#include <iostream.h>class TRAIN{

int Tno, TripNo, PersonCount;public:

TRAIN(int Tmno=1){

Tno = Tmno;TripNo = 0;PersonCount=0;

}void Trip(int TC=100){

TripNo++;PersonCount+=TC;

}void Show(){

Cout<<Tno<<”:”<<TripNo<<”:”<<PersonCount<<endl;}

};void main(){

TRAIN T(10), N;N.Trip();T.Show();T.Trip(70);N.Trip(40);N.Show();T.Show();

}(b) Find the output of the following program:

#include <iostream.h>#include <ctype.h>Typedef char Txt80 [80];void main(){

char *PText;Txt80 Txt = “Ur2GReAt”;int N = 6;PText = Txt;while (N>=3){

Txt[N] = (isupper(Txt[N]) ? tolower(Txt[N]) : toupper(Txt[N]));cout<<PText<<endl;




N--;PText++;

}}

(c) Observe the following program and find out, which output(s) out of (i) to (iv) will not be expected from the program? What will be the minimum and the maximum value assigned to the variable Chance?#include <iostream.h>#include <stdlib.h>void main(){

randomize();int Game[ ] = {10,16}, P;int Chance = random(2) + 5;for(int T=0; T<2; T++){

P = random(2);cout<<Game[P]+Turn<<”#”;

}}(i) 15#22#(ii) 22#16#(iii) 16#21#(iv) 21#22#

CBSE 20114.(a) Find the output of the following program:

#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;}void Display ( int A[ ], int N ){

for( int K=0; K<N; K++ )(K%2 != 0)? cout<<A[K]<<"%" : cout<<A[K]<<endl;

}void main( ){

int H [ ] = {30, 40, 50, 20, 10, 5 };SwitchOver ( H, 6, 3 );Display ( H, 6 );

}




(b) Find the output of the following program : #include <iostream.h>void main(){

int *Queen, Moves [ ] = {11, 22, 33, 44 };Queen = Moves;Moves[2] += 22;cout<<”Queen @”<<*Queen<<endl;*Queen -= 11;Queen += 2;cout<<”Now @”<<*Queen<<endl;Queen++;cout<<”Finally @”<<*Queen<<endl;cout<<”New Origin @”<<Moves[0]<<endl;

}(c) Go through the C++ code shown below, and find out the possible output or outputs

from the suggested Output Options (i) to (iv). Also, write the minimum and maximum values, which can be assigned to the variable MyNum.

2#include <iostream.h>#include <stdlib.h>void main(){

randomize();int MyNum, Max = 5;MyNum = 20 + random(Max);for ( int N=MyNum; N<=25; N++)

cout<<N<<”*”;}(i) 20*21*22*23*24*25(ii) 22*23*24*25*(iii) 23*24*(iv) 21*22*23*24*25*

CBSE 2010a) Find the output of the following program:

#include <iostream.h>struct THREE_D{ int X, Y, Z; };void MoveIn(THREE_D &T, int Step = 1){

T.X += Step;T.Y -= Step;T.Z += Step;

}void MoveOut ( THREE_D &T, int Step = 1){




T.X -= Step;T.Y += Step;T.Z -= Step;

}void main(){

THREE_D T1 = {10, 20, 5}, T2 = {30, 10, 40};MoveIn ( T1 );MoveOut ( T2, 5 );cout<<T1.X<<”,”<<T1.Y<<”,”<<T1.Z<<endl;cout<<T2.X<<”,”<<T2.Y<<”,”<<T2.Z<<endl;MoveOut ( T2, 10);cout<<T2.X<<”,”<<T2.Y<<”,”<<T2.Z<<endl;

}b) Find the output of the following program:

#include<iostream.h>#include<ctype.h>void MyCode(char Msg[ ], char CH){

for (int Cnt=0; Msg[Cnt] != ‘\0’; Cnt++){

if (Msg[Cnt] >=’B’ && Msg[Cnt] <= ‘G’)Msg[Cnt] = tolower(Msg[Cnt]);

elseif (Msg[Cnt] ==’A’ || Msg[Cnt]==’a’)

Msg[Cnt] = CH;elseif(Cnt%2==0)

Msg[Cnt] = toupper(Msg[Cnt]);else

Msg[Cnt] = Msg[Cnt-1];}

}void main(){

char MyText[]=”ApEACeDriVE”;MyCode(MyText, ‘@’);Cout<<”NEW TEXT:”<<MyText<<endl;

}(c) The following code is from a game, which generates a set of 4 random numbers. Praful is

playing this game, help him to identify the correct option(s) out of the four choices given below as the possible set of such numbers generated from the program code so that he wins the game. Justify your answer.#include<iostream.h>#include<stdlib.h>const int LOW=25;void main()




{randomize();int POINT=5, Number;for( int I=1; I<=4; I++){

Number=LOW + random(POINT);cout<<Number<<”:”;POINT--;

}}(i) 29:26:25:28:(ii) 24:28:25:26:(iii) 29:26:24:28:(iv) 29:26:25:26:

CBSE 20095.(a) 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; I--){

cout<<X[I]<<”*”;if( I%3==0)

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

}(b) Find the output of the following program:

#include <iostream.h>#include <ctype.h>void Encode ( char Info[ ], int N);void main(){

char Memo [ ]= “Justnow”;Encode(Memo, 2);




cout<<Memo<<endl;}void Encode ( char Info[ ], int N){

for ( int I=0; Info[I] != ‘\0’; I++)if ( I%2 == 0)

Info[I] = Info[I] – N;else if ( islower(Info[I]))

Info[I] = toupper(Info[I]);else

Info[I] = Info[I] + N;}

a) Study the following program and select the possible output from it:#include <iostream.h>#include <stdlib.h>const int LIMIT = 4;void main(){

randomize();int Points;Points = 100 + random ( LIMIT );for ( int P=Points; P>=100; P--)

cout<<P<<”#”;cout<<endl;

}(i) 103#102#101#100#(ii) 100#101#102#103#(iii) 100#101#102#103#104#(iv) 104#103#102#101#100#

CBSE 20087.a) Find the output of the following program:

#include <iostream.h>#include <conio.h>void main(){

char Text[ ] = “Mind@Work!”;for( int I=0; Text[I] != ‘\0’; I++){

if(!isalpha(Text[I]))Text[I] = ‘*’;

else if(isupper(Text[I]))Text[I] = Text[I] + 1;

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

}cout<<Text;




}

b) Find the output of the following program:#include <iostream.h>void main(){

int U = 10, V = 20;for( int I=1; I<=2; I++){

cout<<”[1]=”<<U++<<”&”<<V-5<<endl;cout<<”[2]=”<<++V<<”&”<<U+2<<endl;

}}

c) In the following program, find the correct possible output(s) from the options:#include <stdlib.h>#include <iostream.h>void main(){

randomize();char City[][10] = { “DEL”, ”CHN”, ”KOL”, ”BOM”, ”BNG” };int Fly;for( int I=0; I<3; I++){

Fly=random(2) + 1;cout<<City[Fly]<<”:”;

}}Outputs:(i) DEL:CHN:KOL:(ii) CHN:KOL:CHN:(iii) KOL:BOM:BNG:(iv) KOL:CHN:KOL:




CBSE 20078.a) Find the output of the following program:


int Array[ ] = { 4, 6 10, 12 };int *pointer = Array;for ( int I=1’ i<=3; i++){

cout<<*pointer<<”#”;pointer++;

}cout<<endl;for (I=1; I<=4; I++){

(*pointer) *= 3;--pointer;

}for (I=1; I<5; I++)

cout<<Array[I-1]<<”@”;cout<<endl;


#include <iostream.h>void Withdef ( int HisNum = 30){

for (int I=20; I<=HisNum; I+=5)cout<<I<<” “;cout<<endl;

}void Control (int & MuNum){

MyNum+=10;Withdef(MyNum);

}void main(){

int YourNum = 20;Control(YourNum);Withdef();cout<<”Number=”<<YourNum<<endl;

}




c) In the following C++ program what is the expected value of MyMarks from Option (i) to (iv) given below. Justify answer.#include <stdlib.h>#include <iostream.h>void main(){

randomize();int Marks [ ] = {99, 92, 94, 96, 93, 95 }, MyMarks;MyMarks = Marks [ 1 + random(2) ];

}(i) 99 (ii) 94 (iii) 96 (iv) None of the above

CBSE 20069.(i) Find the output of the following program:

#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){

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

}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 + 1];strcpy(state_name, a.state_name);strcat(state_name, b.state_name);

}};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();



long NUM = 1234543;int F=0, S=0;do{

int Rem = NUM%10;if(Rem%2 != 0)

F += Rem;else

S += Rem;NUM /= 10;

}while(NUM > 0);cout<<F-S;

}



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Q - Computer Tuitions · Web viewSTRING Word=”CRACKAJACK”; MIXITNOW(Word); cout

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