How do you declare an array of 10 integers in C++?

To declare an array of 10 integers in C++, the correct syntax is using square brackets with the desired size specified within those brackets. This defines the array's size and allocates the appropriate amount of memory for it. In this case, writing int arrayName[10]; indicates that arrayName will hold 10 integers.

This method of declaration directly informs the compiler of the type and the number of elements in the array. Each element in the array can then be accessed using an index, starting from 0 up to 9 for the 10 elements.

In contrast, other options utilize incorrect syntax or memory allocation techniques. Using new int[10] implies dynamic memory allocation, which requires additional handling for memory management, and is not appropriate for simple static array declaration. The notation with parentheses doesn’t apply to array declaration in C++; it is usually used for calling functions or for initializing objects of classes. Lastly, the square brackets used without specifying a size (as in the second option) is not valid syntax in C++ for declaring an array. Therefore, using the syntax shown in the correct choice is the proper way to declare a fixed-size array in C++.