Pointers in C

What is pointer arithmetic in C?

• Accessing data stored in pointers

• Assigning values to pointers in C

• Manipulation of memory addresses using pointers.

• Using pointers to perform mathematical operations

Which operator is used to access the value pointed by a pointer?

• &

• ->

• .

• *

What is the size of a pointer variable in C?

• 4 bytes (on a 32-bit system) or 8 bytes (on a 64-bit system)

• 10 bytes

• 2 bytes

• 16 bytes

What is a null pointer in C?

• A null pointer is a pointer that points to a random memory address.

• A null pointer is a pointer that points to the address 0.

• A null pointer is a pointer that does not point to any memory address.

• A null pointer is a pointer that points to a non-existent memory location.

Which of the following is true about pointer to functions in C?

• A pointer to a function in C is a variable that stores the value of a function.

• A pointer to a function in C is used to call a function directly.

• A pointer to a function in C is a data type that can only store the address of a function.

• A pointer to a function in C is a variable that stores the address of a function.

What is the purpose of a pointer to structure in C?

• To store the memory address of a structure and access its members using the pointer.

• To perform arithmetic operations on a structure

• To create a copy of a structure

• To allocate memory for a structure

Which operator is used to access the members of a structure through a pointer?

• *

• .

• ->

• ::

What is the purpose of a pointer to an array in C?

• The purpose of a pointer to an array in C is to store the value of the first element of the array.

• A pointer to an array in C is used to access elements in the middle of the array.

• A pointer to an array in C is used to allocate memory for the array.

• The purpose of a pointer to an array in C is to store the memory address of the first element of the array.

Which operator is used to access the elements of an array through a pointer?

• ->

• &

• .

• *

What happens when a null pointer is dereferenced in C?

• Segmentation fault.

• Compilation error.

• Undefined behavior

• Runtime error.