A contigous segment of an array is given by specifying two subscripts,lower and upper.Which of the following expressions gives the subscript of the array element that is three quarters of the way from lower to upper?
A) lower + 3 * upper /4
B) lower /3 + upper
C) (upper - lower.* 3 /4
D) lower + (upper - lower.* 3 / 4

Question

Quizplus · Accepted Answer

To find the subscript of the array element that is three quarters of the way from lower to upper, we need to find 3/4 of the distance between lower and upper and add it to lower.

The distance between lower and upper is given by (upper - lower), and 3/4 of this distance is (upper - lower)*3/4.

Adding this to lower gives us the subscript of the array element we are looking for:

lower + (upper - lower)*3/4

Option D is the only expression that matches this calculation, so it is the correct answer.

A Contigous Segment of an Array Is Given by Specifying