XII - CS - HOME ASSIGNMENTS 1 & 2


HOME ASSIGNMENT 1 (BASED ON XI C++ REVIOSON TOUR: 12 MARKS) For XII-CS Students
 
1. What is escape sequence? Explain with example.
2. Name the header files which are required for successful execution of the following c++ code:
 
void main( )
{
char String[ ] = “String”;
cout << setw(2)<<String;
}
3.  Rewrite the following program after removing all the syntax error(s), if any
#include[iostream]     // line 1
void main(){
int LIST[ ]=[100,200,300,400] , Y;   // line 2
COUNT= 4;                         // line 3
cin>>Y;
for(i=COUNT-1 ; I >=0;,i--)
switch(i)   {
case 0 :
case 2 : cout<<Y*LIST[i]<endl;    // line 4
break;
case 1:
case 3 : cout >> Y+LIST[i];
} }
4. Write the output of the following program
# include<iostream.h>
# include<conio.h>
void Execute(int &X, int Y = 200)
{int TEMP = X + Y;
X += TEMP;
if (Y != 200)
cout << TEMP << " " <<X<<" "<<Y<<endl; }
void main() { int A = 50, B = 20;
Execute(B);
cout << A << " " << B << endl;
Execute(A,B);
cout << A << " " << B << endl;
getch(); }
5.  In the following program , find the correct possible outputs(s) form the given options :
#include<iostream.h>
#include<stdlib.h>
void main(){
Randomize();
Char places[][20]={“VARANASI”, ”VIZAG”, ”KANPUR”, ”AGRA”};
Int city;
For(int i=0 ; i<=2;i++){
city =random(2) + 1;
Cout<<places[city]<<”@@”;}}
Output :
(i)        VIZAG @@ KANPUR @@VIZAG
ii)       VARANASI @@ VIZAG@@KANPUR
iii)VIZAG@@KANPUR@@AGRA
iv)     VIZAG@@KANPUR@@KANPUR
6.  Write a function void void COMBINE(int A3[],int A1[],int A2[],int N,int M ) in C++ to transfer the content from two arrays A1[ ] and A2[ ] to array   A3[ ]. The even places (0, 2, 4, ...)   of array A3[ ] should get the content from the array A1[ ] and odd  places (1, 3, 5, ) of the array A3[] should get the content from the array  A2[ ].
Example:
If the A1[ ] array contains
35, 60, 95
And the A2[ ] array contains
100, 500, 805
The A3[ ] array should contain
35, 100, 60, 500, 95, 805
 
7.  An array P[20] [50] is stored in the memory along the column with each of its element occupying 4
bytes, find out the 1ocation of P[15][10], if P[0][0] is stored at 5200.
8. Name the header files to which the following belong:
(i)abs( )(ii) random( )
9.  Rewrite the following program after removing all the syntax error(s), if any
#include<iostream.h>
void main( )
{ F = 10, S = 20;
test(F;S);
test(S); }
void test(int x, int y = 20)
{ x=x+y;
count<<x>>y;}
10.  Write the output of the following program
#include<iostream.h>
#include<conio.h>
void main( )
{     
long NUM=1234543;
int F=0,S=0;
do{    
int R=NUM % 10;
if (R %2 != 0)
F += R;
else
S += R;
NUM /= 10;
} while (NUM>0);
cout<<(F-S);
getch();
}
11. Write the output of the following program                                                                           
#include<iostream.h>
#include<conio.h>
void Withdef(int HisNum=30)
{for(int I=20;I<=HisNum;I+=5)
cout<<I<<",";
cout<<endl;}
void Control(int &MyNum)
{ MyNum+=10;
Withdef(MyNum);}
void main()
{int YourNum=20;
Control(YourNum);
Withdef();
cout<<"Number="<<YourNum<<endl;
getch();
}
12.  Observe the following program  GUESS.CPP carefully, if the value of  variable Num entered by the user is 5 , choose the correct possible output(s) from the options from (i) to (iv) and justify your option:
//  Program Name :  GUESS.CPP
#include<stdlib.h>
#include<iostream.h>
#include<conio.h>
void main()
{
randomize();
int Num,rndnum;
cin>>Num;
rndnum=random(Num)+5;
for(int N=1;N<=rndnum;N++)
cout<<N<<"##";
getch();
}
Output :
(i)1##2##3##4##
(ii)1##2##
(iii)1##2##3##4##5##6##7##8##9##
(iv)1##2##3##
13. Write the output of the following C++ code. Also, write the name of feature of Object Oriented Programming used in the following program jointly illustrated by the functions [I] to [IV].                
#include<iostream.h>
#include<conio.h>
int  add (int x, int y , int z )                                                                                                      // Function [I]
{
return (x+y+z);
}
 
int  add (int x, int y  )                                                                                                               // Function [II]
{
return (x+y);
}
double  add (double  x, int y , int z )                                                                                      // Function [III]
{
return (x+y+z);
}
double  add (double x, double y )                                                                                          // Function [IV]
{
return (x+y);
}
 
void main( )
{
cout<<add(10,20,30)<<endl;
cout <<add(40,50)<<endl;
cout<<add(10.5,20,30)<<endl;
cout<<add(30.3,20.5);
getch();
}
 
14.  Write a function in C++, which accepts an integer array and its size as arguments and swap the elements of every even location with its following odd location.    
Example: If an array of nine elements initially contains the elements as
 
2 4 165792310
then the function should rearrange the array as
42617523910
 
15.  An array Array[20][15] is stored in the memory along the column with each element occupying 8 bytes. Find out the base address of the element Array[2][3] if the element Array[4][5] is stored
at the address 1000.   
 
 
  HOME ASSIGNMENT 2 (BASED ON XI C++ REVIOSON TOUR: 12 MARKS)                                                             
 
1.  What is difference between call by value and call by reference ?Also, give a suitable C++ Code to illustrate both.                                                                                                                                    
2.  Name the header file(s) that shall be needed for successful compilation of the following C++ code.                                                                                                                                                           
void main( )
{
char String[20];
gets(String);
strcat(String,”CBSE”);
puts(String);
}
 
3.  Rewrite the following program after removing the syntax error(s) if any. Underline each  correction.                                                                                                                                             
#include<iostream.h>
void main( )
{ One=10,Two=20;
Callme(One,Two);
Callme(Two); }
void Callme(int Arg1,int Arg2)
{ Arg1=Arg1+Arg2;
Count<<Arg1>>Arg2; }
 
4. 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:
5     Find the output of the following program                                                      
#include<iostream.h>
#include<string.h>
#include<ctype.h>
void Convert(char Str[ ],int Len)
{        for(int Count=0;Count<Len;Count++)
{        if(isupper(Str[Count]))
Str[Count]=tolower(Str[Count]);
else if (islower(Str[Count]))
Str[Count]=toupper(Str[Count]);
else if(isdigit(Str[Count]))
Str[Count]=Str[Count]+1;
else Str[Count]=.*.;
}        }
void main( )
{        char Text[ ]=”CBSE Exam 2005”;
int Size = strlen(Text);
Convert(Text,Size);
cout<<Text<<endl;
for(int C=0,R=Size . 1;C<=Size/2;C++,R--)
{        char Temp=Text[C];
Text[C]=Text[R];
Text[R]=Temp;       }
cout<<Text<<endl; }
6. Find the output of the following program:                                                                                   
#include<iostream.h>
#include<ctype.h>
void main( )
{        char Mystring[ ] = "what@OUTPUT!";
for(int I=0; Mystring[I]!=’\0’;I++)
{ if(!isalpha(Mystring[I]))
Mystring[I]=’*’;
else if(isupper(Mystring[I]))
Mystring[I]=Mystring[I]+1;
else
Mystring[I] =Mystring[I+1];
} cout<<Mystring; }
 
7.   An array A[10…..20][-5…10] having starting row index as 10 and starting column index as -5, Basic address of array is 2500. Size of each element is 8 Bytes.Find the following :
(a) A[15][-2]    (b)  A[18][8]   (c) Size of Array “A”
**********************************************************************
8.  An array G[50][20] is stored in the memory along the row with each of its elements occupying 8 bytes, find out       3
the location of G[10][15], if G[0][0] is stored at 4200.
-------------------------------------------------------------------------------------------
9.  What is the difference between Type Casting and Automatic Type Conversion? Also, give a suitable C++ code to        2
illustrate both.
.......................................................
10.  Write the names of the header files, which is/are essentially required to run/execute the following C++ code:    1
void main()
{
char CH,Text[]=”+ve Attitude”;
for(int I=0;Text[I]!=’\0’;I++)
if(Text[I]==’’)
cout<<endl;
else
{
CH=toupper(Text[I]);
cout<<CH;
}
}
.............................................
11.  Rewrite the following program after removing the syntactical error(s) (if any). Underline each correction.  2
include<iostream.h>
typedef char[80] String;
void main()
{
String S=”Peace”;
int L=strlen(S);
cout<<S<<’has’<<L<<’characters’<<endl;
.........................
12.  Find the output of the following program:                     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;
}
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);
}
************************
13.   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.
#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
 
14.  Write a Get2From2() function in C++ to transfer the content from one array ALL[] to two different arrays Odd[]                     3
and Even[]. The Odd[] array should contain the values from odd positions (1,3,5,…) of ALL[] and Even[] array should contain the values from even positions(0,2,4,…) of ALL[].
Example:
If the ALL[] array contains
12,34,56,67,89,90
The ODD[] array should contain
34,67,90
And the EVEN[] array should contain
12,56,89
.......................
15.  An array G[50][20] is stored in the memory along the row with each of its elements occupying 8 bytes, find out       3
the location of G[10][15], if G[0][0] is stored at 4200.
..............
16.Which C++ header file(s) are essentially required to be included to run/execute the following C++ source code(Note: Do                             1
not include any header file, which is/are not required):
void main()
{
char TEXT[]=”SomeThing”;
cout<<”Remaining SMS Chars                                             :”<<160-strlen(TEXT)<<endl;
}
17.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 Arr[]={9,6},N;
int Chance=random(2)+10;
for  (int  C=0;C<2;C++)
{
N=random(2);
cout<<Arr[N]+Chance<<”#”;
}
}
(i)  9#6#                                            (ii)  19#17#              (iii)  19#16#                   (iv)  20#16#
18.Write a function SWAP2BEST (int ARR[],int Size) in C++ to modify the content of the array in such a way that the 3
elements, which are multiples of 10 swap with the value present in the very next position in the array. For example:
If the content of array ARR is
90,56,45,20,34,54
The content of array ARR should  become
56,90,45,34,20,54
19.An array T[20][10] is stored in the memory along the column with each of the element occupying 2 bytes, find out the memory  location of T[10][5], if an element T[2][9] is stored at location 7600.
 
*****************************************
Submit above two assignments on 14th April 2014. Use separate Book for Home work/Assignments.
******************************************
 

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