NPTEL Programming In Modern C++ Week10 Assignment Solution 2023


There has been a continual debate on which programming language/s to learn, to use. As the latest TIOBE Programming Community Index for August 2021 indicates – C (13%), Python (12%), C++ (7%), Java (10%), and C#(5%) together control nearly half the programming activities worldwide. Further, C Programming Language Family (C, C++, C#, Objective C etc.) dominate more than 25% of activities. Hence, learning C++ is important as one learns about the entire family, about Object-Oriented Programming and gets a solid foundation to also migrate to Java and Python as needed. C++ is the mother of most general purpose of languages. It is multi-paradigm encompassing procedural, object-oriented, generic, and even functional programming. C++ has primarily been the systems language till C++03 which punches efficiency of the code with the efficacy of OOP. Then, why should I learn it if my primary focus is on applications? This is where the recent updates of C++, namely, C++11 and several later offer excellent depths and flexibility for C++ that no language can match. These extensions attempt to alleviate some of the long-standing shortcomings for C++ including porous resource management, error-prone pointer handling, expression semantics, and better readability. The present course builds up on the knowledge of C programming and basic data structure (array, list, stack, queue etc.) to create a strong familiarity with C++98 / C++03. Besides the constructs, syntax and semantics of C++ (over C), we also focus on various idioms of C++ and attempt to go to depth with every C++ feature justifying and illustrating them with several examples and assignment problems. On the way, we illustrate various OOP concepts. The course also covers important advances in C++ 11 and later released features..

Programming In Modern C++ Week10 Programming Assignment July 2023

INTENDED AUDIENCE :  Any interested audience
PREREQUISITES :  10th standard/high school
INDUSTRY SUPPORT :  Programming in C++ is so fundamental that all companies dealing with systems as well as application development (including web, IoT, embedded systems) have a need for the same. These include – Microsoft, Samsung, Xerox, Yahoo, Oracle, Google, IBM, TCS, Infosys, Amazon, Flipkart, etc. This course would help industry developers to be up-to-date with the advances in C++ so that they can remain at the state-of-the-art.

Course Layout

Week 1: Programming in C++ is Fun.
Week 2: C++ as Better C.
Week 3: OOP in C++.
Week 4: OOP in C++.
Week 5: Inheritance.
Week 6: Polymorphism.
Week 7: Type Casting.
Week 8: Exceptions and Templates.
Week 9: Streams and STL.
Week 10: Modern C++.
Week 11: Lambda and Concurrency.
Week 12: Move, Rvalue and STL Containers

Course Name : Programming In Modern C++ July 2023

Programming Assignment : Q1

Consider the following program in C++11/14 to convert between feet and inch. Fill in the blanks as per the instructions given below:
   • at LINE-1 with appropriate header to function convert,
   • at LINE-2 with appropriate return statement convert.
					#include <iostream>
class feet; 
class inch{
        inch(double i) : i_(i){}
        feet getValue();
        void show(){ std::cout << i_ << " "; }
        double i_;

class feet{
        feet(double f) : f_(f){}
        inch getValue();
        void show(){ std::cout << f_ << " "; }
        double f_;

feet inch::getValue(){
    feet t(i_ / 12.0);
    return t;

inch feet::getValue(){
    inch t(f_ * 12.0);
    return t;

template <typename T> 

decltype(auto) convert(T val){   // LINE-1 

    return val.getValue();;      // LINE-2

int main(){
    double a, b;
    std::cin >> a >> b;
    feet f(a);
    inch i(b);
    inch i1 = convert(f); 
    feet f1 = convert(i);;;
    return 0;

Course Name : Programming In Modern C++ July 2023

Programming Assignment : Q2

Consider the following program in C++11/14. Fill in the blanks as per the instructions given below:
   • at LINE-1 with appropriate header and initialization list for the copy constructor,
   • at LINE-2 with appropriate header for copy assignment operator overload,
   • at LINE-3 with appropriate header and initialization list for the move constructor,
   • at LINE-4 with appropriate header for move assignment operator overload.
					#include <iostream>
#include <vector>
class number { 
        number(int i) : ip_(new int(i)) { } 
        number(const number& n) : ip_(new int(*(n.ip_) * 10)) { } // LINE-1: copy constructor 
        number& operator=(const number& n) { // LINE-2: copy assignment 
            if (this != &n) { 
                delete ip_;  
                ip_ = new int(*(n.ip_) * 10); 
            return *this;
        ~number() { delete ip_; } 
        number(number&& n) : ip_(n.ip_) { n.ip_ = nullptr; }  // LINE-3: move constructor 
        number& operator=(number&& d) {  // LINE-4: move assignment 
            if (this != &d) { 
                ip_ = d.ip_; 
                d.ip_ = nullptr; 
            return *this;
void show(){
            if(ip_ == nullptr)
                std::cout << "moved : ";
                std::cout << *ip_ << " : ";
            int* ip_ {nullptr};

int main(){
    int a;
    std::cin >> a;
    number n1(a);
    number n2 = n1;
    number n3;
    n3 = n1;;;;
    number n4 = std::move(n1);
    number n5;
    n5 = std::move(n1);;;;
    return 0;