Question

Which of the following provides the index of the highest numbered element of the array strNames?
A) strNames.Length - 1
B) strNames.Length
C) strNames.Length + 1
D) None of the above

Answer 1

I think I know it but i want clarification

Answer 2

meaning you want the last element in the array ?
if so ; then its A because array indexing starts from 0 meaning if u have one element
it will be in strNames[0] , however strNames.Length will return 1.

Answer 3

Since an Array orders things starting from an index of 0, if you have 3 items you'll have

item[0], item[1] and item[2]

as your 3 items. So the length will give you the number 3. But there's no item[3]! So the correct answer must be length-1!