Question

Fundamental Programming Question 1 (a) Consider each of the following questions carefully. You are required to give the answer true or false and justify your answer. If it is true, explain why it is true i. Linked lists are statically allocated. [2 marks] ii. Automatic variables are destroyed (deallocated) by the C++ runtime system [2 marks] i. You cannot make a reference to unallocated memory when using a vector [2 marks] iv. The virtual keyword turns off runtime checking [2 marks] v. A doubly linked list uses twice as much space as a singly linked list [2 marks] (b) Write a loop that will search an array of int values, myArray, to determine if it contains the integer value stored in a variable myInt and display the message "Found" if it finds it Clearly comment your code. You may assume the myArray and myInt are both declared and initialised 6 marks]

Answer 1

Question1

Solution

a)

i)

True

Explanation

Both the structures and class have the data members and the member function used to map on real world edit,

• structure functionality has same of the class Men the difference is members are to be private by default value

ii)
True

Explanation

• delete[]is one of the operation in C++  

• It is used to de-allocate the memory variable

• create a pointer to the class object type then need to delete the memory allocated the set of objects Example-

#include<iostream>

using namespace std;

struct object

{

Object () {

cout<<"object constructed\n";

}

~object() {

cout<<"object destroyed\n";

}

};

int main() {

object * Ptr;

Ptr= new Object[2];

delete [] ptr;
iii)

True

Explanation
Could not be make the reference to the unallocated memory because do the program will throw an error or crash or it will produce undefined behavior
iv)

False

Explanation

• Virtual keyword can be used for overriding the function in a derived class then it is unnecessary

• Overrides of the virtual functions always to be virtual