1- What does the following code fragment do?

vector my_vector;

my_vector.push_back(3.456);

my_vector.push_back(5);

double result = my_vector[1] + my_vector[0];

cout << "Result is " << result;

2. What is the difference between a shallow copy and a deep copy?

3. Why is it not a problem to have a shallow copy of a primitive-type data

field?

4-

Answer the following questions about lists.

a. Each node in a single-linked list has a pointer to _________________________.

b. In a double-linked list each node has a pointer to________________, and __________.

c. To remove an item from a single-linked list you need a pointer to________________.

d. To remove an item from a double-linked list you need a pointer to ________________.