Question 11

What is the output of the following code? [3 marks]

x = 10
while x < 100:
    x += x

print(x)

Solution

A variable x with value 10 is declared.

x	x < 100?	New x: x += x
10	True	10 + 10 = 20
20	True	20 + 20 = 40
40	True	40 + 40 = 80
80	True	80 + 80 = 160
160	False	160 (exit loop)

At the end, the value of x is printed. During then, x = 160.

Answer

160