Question

What is the meaning of the following declaration in C? $$ \text{int } *(\text{*p})(\text{int } (*a)[]); $$

• A. Represents a pointer to a function that accepts a pointer to an array of integers as an argument and returns a pointer to an integer.
• B. Represents a function that accepts a pointer to an array of integers as an argument and returns a pointer to an integer.
• C. Represents a pointer to a function that accepts a function to an array of integers as an argument and returns a pointer to an integer.
• D. Represents a pointer to a function that accepts a pointer to function to an array of integers as an argument and returns a pointer to an integer.

Hint:

Function pointers in C can be complex, so break down the declaration step by step to understand it better.

Answer 1

The Correct Option is A

The declaration \( \text{int } (\text{p})(\text{int } (a)[]) \) describes a function pointer:
- \( p \) is a pointer to a function.
- The function accepts \( a \), a pointer to an array of integers, as an argument.
- The function returns a pointer to an integer.
Thus, the correct option is \( \text{Represents a pointer to a function that accepts a pointer to an array of integers as an argument and returns a pointer to an integer.} \).