Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide chapter 14 - Classes and objects [Latest edition]

The variables declared inside the class are known as ______

Which of the following statements about member functions are True or False?

i) A member function can call another member function directly by using the dot operator.

ii) Member function can access the private data of the class.

A member function can call another member function directly, without using the dot operator called as ______

The member function defined within the class behaves like ______ functions.

Which of the following access specifier protects data from inadvertent modifications?

class x
{
   int y;
   public:
   x(int z){y=z;} } x1[4];
int main()
{ x x2(10);
return 0;}

How many objects are created for the above program?

State whether the following statements about the constructor are True or False.

i) constructors should be declared in the private section.

ii) constructors are invoked automatically when the objects are created.

Which of the following constructor is executed for the following prototype?
add display( add &);     // add is a class name

What are called members?

Differentiate structure and class though both are user-defined data types.

What is the difference between the class and object in terms of oop?

Why it is considered good practice to define a constructor though a compiler can automatically generate a constructor?

Write down the importance of the destructor.

Rewrite the following program after removing the syntax errors if any and underline the errors:

#include<iostream>
$include<stdio>
class mystud
{ int studid =1001;
char name[20];
public
mystud( ) { }
void register ( )
{cin>>stdid; gets(name); }
void display ( )
{cout<<studid<<”: “<<name<<endl;}
}
int main( ) { mystud MS; register.MS( ); MS.display( ); }
int main( )
{ mystud MS;
register.MS( );
MS.display( );
}

Write with example how will you dynamically initialize objects?

What are the advantages of declaring constructors and destructors under public accessibility?

Given the following C++ code, answer the following question.

class TestMeOut
{
public:
~TestMeOut() //Function 1
{cout<<“Leaving the exam hall”<<endl;} TestMeOut() //Function 2
{cout<<“Appearing for exam”<<endl;}
void MyWork() //Function 3
{cout<<“Answering”<<endl;} };

In Object-Oriented Programming, what is Function 1 referred to, and when does it get invoked/called?

Given the following C++ code, answer the following question.

class TestMeOut
{
public:
~TestMeOut() //Function 1
{cout<<“Leaving the exam hall”<<endl;} TestMeOut() //Function 2
{cout<<“Appearing for exam”<<endl;}
void MyWork() //Function 3
{cout<<“Answering”<<endl;} };

In Object-Oriented Programming, what is Function 2 referred to as, and when does it get invoked/called?

Mention the differences between constructor and destructor.

Define a class RESORT with the following description in C++ :

Private members:
Rno // Data member to storeroom number
Name //Data member to store user name
Charges //Data member to store per day charge Days //Data member to store the number of days Compute( )/*A function to calculate a total amount as Days * Charges and if the total amount exceeds 11000 then the total amount is 1.02 * Days *Charges */
Public member:
GetInfo( ) /* Function to Read the information like name , room no, charges and days*/
DispInfo( )/* Function to display all entered details and total amount calculated using COMPUTE function*/

Write the output of the following

#include<iostream>
using namespace std;
class student
{
  int rno, marks;
  public: student(int r, int m)
  {
    cout << "Constructor " << endl;
    rno = r;
    marks = m;
  }
  void printdet()
  {
    marks = marks + 30;
    cout << "Name: Bharathi" << endl;
    cout << "Roll no : "<<rno << "\n";
    cout << "Marks : "<<marks << endl;
  }
};
int main()
{
  student s(14,70);
  s.printdet();
  cout << "Back to Main";
  return 0;
}