Question

What is printed by the following program?

function product(x, y){ return x * y; } function difference(x, y){ return x - y; } function start(){ var x = 2; var y = 5; var value1 = product(x, y); var value2 = difference(y, x); var result = difference(value1, value2); println(result); }
7
-7
13
-13

Answer 1

The JavaScript program calculates two values using multiplication and subtraction functions and then computes their difference. After executing the functions in sequence, the final output printed by the program is the number 7.

Step-by-step explanation:

Let's analyze the Javascript program by stepping through each function call:

• The product function is called with x=2 and y=5, which returns 10 (2 multiplied by 5).
• The difference function is called with y=5 and x=2, which returns 3 (5 minus 2).
• Finally, difference(value1, value2) is called with value1 being 10 and value2 being 3, which results in 7 (10 minus 3).

So, the program prints out the number 7.