What is the correct syntax to declare a one-dimensional array 'students' of size 20 in C?

Correct Syntax to Declare a One-Dimensional Array in C

Definition: In the C programming language, an array is a collection of elements of the same data type, stored in contiguous memory locations. A one-dimensional array is essentially a list of elements, and its declaration specifies the size and type of the array. The syntax to declare an array is crucial for proper functioning and memory allocation during the program's execution.

Correct Option Analysis:

The correct syntax to declare a one-dimensional array named students of size 20 in C is provided in Option 2: int students[20];.

This syntax is correct and adheres to the rules of array declaration in C. Let's break it down:

• int: This specifies the data type of the array elements. In this case, the array will store integers.
• students: This is the name of the array. It acts as an identifier through which the array elements can be accessed.
• [20]: This specifies the size of the array, i.e., the number of elements it can store. Here, the array can hold 20 integers.

The combination of these components ensures that the compiler knows the type of data being stored, the name of the array, and the size of memory that needs to be allocated for it. This makes int students[20]; the correct and standard way to declare a one-dimensional array of size 20 in C.

Additional Information: The elements of the array can be accessed using their indices. In C, array indices start from 0, so students[0] refers to the first element, students[1] to the second, and so on, up to students[19] for the 20th element.