Module 9: Pointers

What is a pointer in C?

• A function that returns a value

• A variable that stores a memory address

• A reserved keyword

• An array of characters

In C, how is a pointer declared?

• Using single quotes like 'ptr'

• Using angle brackets like <int>

• Using an asterisk (*) before the variable name, like int *ptr;

• By using double quotes like "ptr"

What does a null pointer in C represent?

• A pointer that points to the number zero

• A pointer that points to a valid memory location

• A pointer that doesn't point to any memory location

• A pointer with an asterisk in front of it

What is the relationship between arrays and pointers in C?

• Arrays are a type of pointer

• Arrays and pointers are entirely unrelated

• Arrays can be accessed using pointer arithmetic

• Pointers are a type of array

What is the address-of operator in C?

• &

• *

• !

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