paper 2, pseudocode and algorithms

Question 1

What is a pointer?

Answer 1

A pointer is a variable which is capable of storing the initial address of the object of which it wants to point to.

Question 2

What are the different types of pointers?

Answer 2

1. Wild Pointer
2. NULL Pointer
3. Dangling Pointer
4. Void Pointer

Question 3

What is the Wild Pointer?

Answer 3

Wild Pointers are pointers that are not initialized. The pointer may be initialized to a non-NULL value. Has no initial or end address

Question 4

What is the NULL Pointer?

Answer 4

A NULL Pointer is a pointer that points to nothing.

+ we can initialize a pointer variable when that pointer variable is not assigned any actual memory address

+ we can pass a null pointer to a function argument when we are not willing to pass any actual memory address

Question 5

What is the Dangling Pointer?

Answer 5

The Dangling Pointer is a pointer that points to a memory location that has been deleted.

Question 6

What is a Void Pointer?

Answer 6

A Void Pointer is a pointer that is not allied with any data types. Also known as general-purpose pointer.