HOLIDAY HOME WORK FOR CLASS XII B 2016-17 (SUMMER VACATION)

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Q1. Observe  the  following  C++  code  and  write  the  name(s)  of  the header  file(s),  which  will  be  essentially  required  to  run  it  in  a C++ compiler :                                
void main()
{
char CH,STR[20];
cin>>STR;
CH=toupper(STR[0]);
cout<<STR<<”starts with”<<CH<<endl;
}

Q2. Rewrite  the  following  C++  code  after  removing  all  the  syntax error(s),  if   present  in  the  code.  Make sure that you  underline each correction done by you in the code.                   
Important Note:
–  Assume that  all  the  required  header  files  are  already included, which are essential to run this code.
–  The  corrections  made  by  you  do  not  change  the  logic  of the program.
typedef char[80] STR;
void main()
{ Txt STR;
gets(Txt);
cout<<Txt[0]<<’\t<<Txt[2];
cout<<Txt<<endline;
}

Q3. Deepa  has  just  started  working  as  a  programmer  in  STAR SOFTWARE  company.  In the company she has got her first assignment to be done using a C++ function to find the smallest number out of a given set of numbers stored in a one-dimensional array.  But she has committed some logical mistakes while writing the code and is not getting the desired result. Rewrite the correct code underlining the corrections done.  Do not add any additional statements in the corrected code.                 
int find(int a[],int n)
{  int s=a[0];
for(int x=1;x<n;x++)
if(a[x]>s)
a[x]=s;
return(s);
}

Q4. Find output of the following program segment:           
#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]);
else
 if(Msg[cnt]==‘N’Msg[cnt]==‘n’Msg[cnt]==‘’)
  Msg[cnt]=CH;
else
 if(cnt%2==0)
Msg[cnt]=toupper(Msg[cnt]);
else
Msg[cnt]=Msg[cnt–1];
}
 }
void main()
{ 
 char MyText[]="Input Raw";
Mycode(MyText, ‘ @’);
cout<<"NEW TEXT:"<<MyText<<endl; 
}

Q5. Write a user  defined function DIVT() which takes an integer as parameter and returns whether it is divisible by 13 or not. The function  should  return  1  if  it  is  divisible  by  13,  otherwise  it should return 0.                               

Q6. Rewrite the following program after removing the syntactical error(s), if any. Underline each correction.          
#include <iostream.h>
void main()
{ 
struct STUDENT
{ 
char stu_name [20];
char stu_sex;
int stu_age=17;
} student;

gets(stu_name);
gets(stu_sex);  
}

Q7. What are Nested Structures? Give an example.

Q8. Find the output of the following program:      
#include<iostream.h>
void main( )  { long NUM = 1234543;
int F = 0, S = 0;
do
{ int Rem = NUM% 10;
if (Rem % 2 !=0)
F+ =R;
else
S+ = R;
NUM/=10;
} while(NUM>0);
cout<<F-S;
}

Q9. Study the following C++ program and select the possible output(s) from it :  Find the maximum and minimum value of L.        
#include<stdlib.h>
#include<iostream.h>
#include<string.h>
void main()
{randomize();
char P[]="C++PROGRAM";
long L;
for(int I=0;P[I]!='R';I++)
{ L=random (sizeof(L)) +5;
cout<<P[L]<<"-";
} } }
i) R-P-O-Rii) P-O-R-+-iii) O-R-A-Giv) A-G-R-M

Q10. Write a program to find out volume of the following using function overloading.
i). volume of cube
ii). volume of cuboid
iii). volume of cylinder

Q11. Write a program to find area of following using function overloading.
i). Area of circle (function with one parameter)
ii). Area of rectangle (function with two parameters)
iii). Area of triangle (function with three parameters)

Q12. Fill in the blanks:
i). Act of representing essential features without background detail is called ___________.

ii). Wrapping up of data and associated functions into a single unit is called_________.

iii). ____________is called the instance of a class.

Q13. Define a class Tourist in C++ with the following specification: 

Data Members - private
● CNo - to store Cab No
● CType - to store a character ‘A’, ‘B’, or ‘C’ as City Type
● PerKM - to store per Kilo Meter charges
● Distance - to store Distance travelled (in KM)
Member Functions - public
● A function CityCharges( )  to assign PerKM as per the following table :
CType
PerKM
A
20
B
18
C
15
● A function RegisterCab()  to allow administrator to enter the values  for  CNo  and  CType.  Also, this function  should  call CityCharges() to assign PerKM Charges.
●  A  function  Display()  to  allow  user  to  show  the  values  of Distance  and  display  CNo,  CType,  PerKM,  PerKM*Distance (as Amount) on screen.

Q14. Define a class REPORT with the following specification
private:
  Adno - 4 digit admission number
  Name - 20 characters
  Marks - an array of floating point values
  Averge - average marks obtained
  Getavg( ) -  to compute the average obtained in five subjects
public:
  Readinfo( ) - function to accept values for adno, name, marks and
    Invoke the function Getavg( )
  Displayinfo( ) - function to display all data members on the screen.

Q15. What is Object Oriented Programming? List some of its advantages

Q16.  Explain Data Hiding with respect to OOP.

Q17. Differentiate between an object and a class.

Q18. Consider the figure given below and answer the questions that follow:
                                                                    
 a. Name the base class and the derived class.
 b. Which concept of OOP is implemented in the figure given above? 

Q19. Write the names of the header flies to which the following belong:

(i) sqrt() (ii) isalpha() (iii) puts() (iv) strcpy()  (v) setw() (vi) abs() (vii) isupper() (viii) strcat() (ix) random() (x)getchar()

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NOTE:   HOLIDAY HOME WORK FOR CLASS XII B 2016-17.



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