NPTEL PROGRAMMING IN C++ ASSIGNMENT WEEK 3 ANSWERS 2020(JUL-DEC) || CODE LINK IN THE COMMENTS

 Question 1:

 triangle(int b, int h) : _base(&b), _height(&h) { } // Line-1

    // LINE-1: Complete Constructor definition

    ~triangle() {

        _base = 0; // Line-2

        _height = 0;// LINE-2: Complete destructor to delete both data pointers

    }

    double area();

};

double triangle::area() {  // LINE-3: Complete function header

Question 2:

 mutable int _sem;        // LINE-1

public:

    Student(int roll, string name, int sem)

        : _roll(roll), _name(name), _sem(sem) { }

    void promote() const { // LINE-2

        _sem++;

    }

    void display() const{ // LINE-3

Question 3:

#include <iostream>

#include <string>

using namespace std;

class Complex {

    const int _r, _i;

public:

    Complex() : _r(0), _i(0){ }                       // LINE-1

    Complex(int r) : _r(r),_i(0) { }                  // LINE-2

    Complex(int r, int i) : _r(r), _i(i) { }           //          

Question 4 :

integer objA;  // LINE-1: Invoke Default Constructor

    integer objB(val);  // LINE-2: Invoke Parameterized Constructor

    integer objC = objB;  // LINE-3: Invoke Copy Constructor