Programming in Modern C++ | Week 6

Course Name: Programming in Modern C++

Course Link: Click Here

These are Nptel Programming in Modern C++ Assignment 6 Answers

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Quiz

Q1. Consider the following code segment.
What will be the output?
a) 13
b) 14
c) 23
d) 24

Answer: b) 14

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Q2. Consider the following code segment.
What will be the output/error?
a) 10 6
b) 10 4
c) 8 6
d) 8 4

Answer: a) 10 6

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Q3. Consider the following code segment.
What will be the output?
a) ABC ~C ~B ~A
b) ABC ~C ~B
c) ABC~B~A
d) ABC ~A

Answer: d) ABC ~A

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Q4. Consider the following code segment.
Which line/s will give you error?
a) LINE-1
b) LINE-2
c) LINE-3
d) LINE-4

Answer: b, c

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Q5. Consider the following code segment.
Which line/s will give you error?
a) LINE-1
b) LINE-2
c) LINE-3
d) LINE-4

Answer: a, d

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Q6. Consider the following code segment.
What will be the output?
a) A::f(0) B::g() C::h()
b) C::f() C::g() B::h()
c) C::f() B::g() B::h()
d) C::f() C::g() C::h()

Answer: a) A::f(0) B::g() C::h()

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Q7. Consider the following code segment.
Fill in the blank at LINE-1 so that the program will print 2.
a) cb->B::fun()
b) B::fun()
c) B::cb->fun()
d) cb->fun()

Answer: a) cb->B::fun()

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Q8. Consider the following code segment.
Identify the abstract classes.
a) Vehicle, Car, MotorCycle
b) Vehicle, Car, SUV
c) Vehicle, Car
d) Vehicle, Car, SportsCar, SUV

Answer: b) Vehicle, Car, SUV

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Q9. Consider the following code segment.
What will be the output?
a) 0
b) 1
c) 2
d) Garbage

Answer: a) 0

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Programming Assignment of Programming in Modern C++

Question 1

Complete the program with the following instructions.
  • Fill in the blank at LINE-1 with proper access specifier.
  • Fill in the blanks at LINE-2 to declare area() as a pure virtual function.
The program must satisfy the given test cases.

Solution:

#include<iostream>
using namespace std;
class Shape
{
  protected:
  double ar;
  public:
  virtual void area()=0;
  void show()
  {
    cout << ar << " ";
  }
};

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Question 2

Consider the following program with the following instructions.
  • Fill in the blank at LINE-1 with appropriate destructor declaration.
  • Fill in the blank at LINE-2 with appropriate initialization list of derived class constructor.
The program must satisfy the sample input and output.

Solution:

#include<iostream>
using namespace std;
class Base
{
  public:
  Base()
  {
    cout << "1 ";
  }
  Base(int n)
  {
    cout << n << " ";
  }
  virtual ~Base()
  {
    cout << "2 ";
  };
};
class Derived : public Base
{
  int num;
  public:
  Derived()
  {
    cout << "3 ";
  }
  Derived(int n) : Base(n), num(n*3)
  {
    cout << num << " ";
  }
  virtual ~Derived()
  {
    cout << "4 ";
  }
};

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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Question 3

Consider the following program. Fill in the blanks as per the instructions given below:
  • Fill in the blanks at LINE-1 with an appropriate keyword.
  • Fill in the blank at LINE-2 with an appropriate function declaration.
  • Fill in the blank at LINE-3 with an appropriate statement.
such that it will satisfy the given test cases.

Solution:

#include<iostream>
using namespace std;
class B
{
  protected:
  int s;
  public:
  B(int i=0) : s(i)
  {}
  virtual ~B()
  {}
  virtual int fun(int x)=0;
};
class D : public B
{
  public:
  D(int i) : B(i)
  {}
  ~D();
  int fun(int x)
  {
    return s+x;
  }
};
class Z
{
  public:
  void fun(int a, int b)
  {
    B *t = new D(a);
    int i = t->fun(b);
    cout << i << " ";
    delete t;
  }
};

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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These are Nptel Programming in Modern C++ Assignment 6 Answers

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