How do you declare a one-dimensional array of 10 integers in C?

• A. int data[10];
• B. int data(10);
• C. array data[10];
• D. data[10] int;

Answer: (A)

In C, to declare a one-dimensional array of 10 integers you write the type, the name, and the size in brackets: int data[10]; This creates space for 10 int elements, accessible as data[0] through data[9]. The size must be a constant expression, and the brackets after the name signal an array, not a function or something else. The other forms don’t follow C syntax: using parentheses (10) looks like a function declaration, there is no array keyword like array, and placing the declarator after the size (data[10] int) isn’t valid C.