Question

Consider the following static method, calculate.

Answer 1

Answer:

return 8 * x

Explanation:

Given

The attached code segment

Required

Which single statement can replace the program body

From calculate(), we have:

$x = x + x;\\ x = x + x;\\ x = x + x;$

The first line (x = x + x) implies that:

$x=2x$

So, on the next line; 2x will be substituted for x

i.e.

$x = x + x$ becomes

$x = 2x + 2x$

$x = 4x$

So, on the third line; 4x will be substituted for x

i.e.

$x = x + x$ becomes

$x = 4x+ 4x$

$x = 8x$

In programming: 8x = 8 * x:

This means that: return 8 * x can be used to replace the body