8. What is the correct syntax of declaring arrays of pointers of integers of size 10 in C++?

a) int arr = new int[10];

b) int **arr = new int*[10];

c) int *arr = new int[10];

d) int *arr = new int [10];

(b) int **arr = new int*[10];

Explanation:

An array of pointers is simply an array containing pointer variables. These pointer variables may be Strings, integers, doubles e.t.c

To declare such arrays of pointers, for example, of integers, in C++, we write;

int **arr = new int*[10];

The left hand side of the above code snippet i.e int ** arr, suggests that arr is a pointer that points to a pointer to integer variables.

The right hand side i.e new int* [10], creates a new array of 10 integer pointer variables.

Now, put together, int **arr = new int*[10] will create/declare an array of pointers of integers having a size of 10.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt