h03: Chapter 3, section 3.1, Chapter 4, 4.1 - 4.5

Complete your reading of Chapter 3, section 3.1, Chapter 4, 4.1 - 4.5 (If you don’t have a copy of the textbook yet, there is one on reserve at the library under “COMP000-STAFF - Permanent Reserve”).

1. (10 pts) What is the output of the following code:

int *p, *q;
int x;
p = &x;
q = new int;
*p = 50;
*q = 60;
cout << *p << ", "   << *q << endl;
p = q;
cout << *p << ", "  <<  *q << endl;
*p = 30;
*q = 40;
cout << *p << ", " << *q << endl;
delete p;

2. (5 pts) Suppose that we added the line delete q; after the last line of the code in the previous question, how would the behavior of the program change?
3. (10 pts) On page 98 (Chapter 3), the author talks about value semantics, which specifies different ways of copying the value of objects of a class to other objects of the same class. Using examples write two ways in which this can be done for the Complex class covered in the code at the following link: https://github.com/ucsb-cs24-mirza/cs24-m19-lectures/blob/master/lec-03/complex.cpp. This code represents a complex number (of the form re + im*i).
4. Read the code provided in pointCloud.h in point.h in this repo that describes a point and a pointCloud: https://github.com/ucsb-cs24-w18/cs24-h03. Answer the following questions about the provided code i. (5 pts) Suppose the parametrized constructor was implemented as below, what is the syntax/logic error. Provide a correct implementation.

pointCloud::pointCloud(int cap = 10){
	cloud = new point[capacity];
}

ii. (10 pts) Implement the copy constructor
iii. (20 pts) Implement the copy-assignment operator
iv. (20 pts) Implement the destructor
v. (20 pts) Indicate which constructor/operator of the pointCloud class is called for the given code by writing (a), (b), (c), (d) or "none" against each of the statements as defined here: (a) parameterized constructor, (b) copy constructor, (c) assignment operator, (d) destructor.

void whatsThePoint(){
	pointCloud *p = new pointCloud;
	for (int i = 0;i < 20; i++){
		p->insert(point(i, 10*i));
	}
	pointCloud q(*p);
	pointCloud w;
	w = q;
	delete p;
}