How are the object's behaviour and object's characteristics represented in OOP?

Why function overloading is used?

How are abstraction and encapulation interrelated?

Inheritance allows code reusability in OOp.Explain how?

Observe the program segment carefully and answer the question that follows: class member
{
int member_no;
char member_name[20];
public:
void enterDetail( );
void showDetail( );
int getMember_no( ){ return member_no;}
};
void update(member NEW )
{
fstream File;
File.open( “member.dat”, ios::binary|ios::in|ios::out) ;
member i;
while(File .read((char*) & i , sizeof (i)))
{
if(NEW . getMember_no( ) = = i . getMember_no( ))
{
___________//missing statement
File.write((char*) &NEW , sizeof (NEW));
}
}
File.close() ;
}
If the function update( ) is supposed to modify the member_name field of a record in the file “ member.dat” with the values of member NEW passed as argument, write the appropriate statement for the missing statement using seekp( ) or seekg( ), whichever is needed, in the above code that would write the modified record at its proper place.

Observe the program segment carefully and answer the question that follows:
class student
{
int student name[20];
int mark;
public:
void enterDetail( );
void showDetail( );
void change_mark( ); //Function to change the mark
int getStudent_no( ){ return student_no;}
};
void modify( int y )
{
fstream File;
File.open( “student.dat”, ios::binary|ios::in|ios::out) ;
student i;
int recordsRead = 0, found = 0;
while(!found && File .read((char*) & i , sizeof (i)))
{
recordsRead++;
if(i . getStudent_no( ) = = y )
{
i . change_mark( );
____________//Missing statement 1
___________//Missing statement 2
found = 1;
}
}
if( found = = 1)
cout<<”Record modified” ;
File.close() ;
}
If the function modify( ) is supposed to change the mark of a student having student_no y in the file “student.dat”, write the missing statements to modify the student record.

Why do you think function overloading must be a part of an OOP?

How does a class enforce data hiding, abstraction, and encapsulation?

Rewrite the following program after removing the error(s), if any. Underline each correction
#include< iostream.h >
void main( )
{
int x,sum=0;
cin>>n;
for(x=1;x<100,x+2=2)
ifx%2=0
sum+=x;
cout<<"sum="sum;
}
 

Rewrite the following program after removing the syntactical errors (if any). Underline each correction.
#include [iostream.h]
class MEMBER
{
int Mno;float Fees;
PUBLIC:
void Register(){cin>>Mno>>Fees;}
void Display{cout<<Mno<<":"<<Fees<<endl;}
};
void main()
{
|MEMBER M;
Register ( );
M.Display ( );
}
 

To illustrate the use of friend keyword.

To show the use of static variables.

Write the output of the following program:
#include< iostream.h >
#include
int a =3;
void demo(int &x, int y, int *z)
{
a+= x; y*=a; *z = a+y;
cout<< a << “”<< x << “”<< y << ""<< z << end1;
}
void main( )
{
clscr( )
{
int a=2, b=5;
demo (::a,a,&b);
cout << ::a <<""<, a << "" << b << end1;
}
 

Find the output of the following program : 2
#include< iostream.h >
void main()
{
int Numbers[ ] = {2,4,8,10};
int *ptr = Numbers;
for (int C = 0; C<3; C++)
{ cout<< *ptr << “@”; ptr++;
}
cout<< &ptr<<"@";
ptr++;
cout<<end1;
fof(C=0;C<4;C++)
{
(*ptr)*=2;
-ptr;
}
for(C=0;C<4;C++)
cout<< Number[ C]<<"#";
cout<< end1;
}

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].

Consider the following C++ code and answer the questions from (i) to (iv)
   class Campus
   {
    long Id;
    char City[20];
    protected:
      char Country[20];
    public:
      Campus();
      void Resister();
      void Display();
   };
   class Dept : private Campus
   {
      long DCode[10];
      char HOD[20];
      protected:
       double Budget;
      public:
       Dept();
       void Enter();
       void Show();
  };
  class Applicant : public Dept
  {
      long RegNo;
      char Name[20];
      public:
        Applicant();
        void Enroll();
        void View();
  };

(i)    Which type of inheritance is shown in the above example?
(ii)   Write the names of those member functions, which are directly accessed from the objects of class Applicant.
(iii)  Write the names of those data members, which can be directly accessed from the member functions of class Applicant.
(iv)  Is it possible to directly call function Display()of class University from an object of class Dept?
       (Answer as Yes or No).

 Define a class in C++ with following description:
Private Members
• A data member Flight number of type integer
• A data member Destination of type string
• A data member Distance of type float
• A data member Fuel of type float
• A member function CALFUEL() to calculate the value of Fuel as per the following criteria:

Public Members
" A function FEEDINFO( ) to allow user to enter values Flight Number,
Destination, Distance & call function CALFUEL ( ) to calculate the quantity of Fuel
" A function SHOWINFO ( ) to allow user to view the contebt of all the data members.

 Answer the questions (i) to (iv) based on the following code :
class CUSTOMER
{ int Cust_no;
char Cust_Name[20];
protected:
void Register();
public: CUSTOMER();
void Status(); };
class SALESMAN
{
int Salesman_no;
char Salesman_Name[20];
protected: float Salary;
public: SALESMAN();
void Enter( );
void Show( );
};
class SHOP :
private CUSTOMER , public SALESMAN
{
char Voucher_No[10];
char Sales_Date[8];
public:
SHOP();
void Sales_Entry();
void Sales_Detail();
}
(iii) Write the names of data members which are accessible from objects belonging to class CUSTOMER.
(iv) Write the names of all the member functions which are accessible from objects belonging to class SALESMAN.
(v) Write the names of all the members which are accessible from member functions of class SHOP. (iv) How many bytes will be required by an object belonging to SHOP?