The answer is D. The program prints:
44
Why?
The loop remembers the biggest number it has seen so far, and replaces it whenever it finds a bigger one. This is how computers find the maximum.
Trace table
A trace table follows the program step by step. Here’s this one:
| n | n > biggest? | biggest |
|---|---|---|
| 24 | yes | 24 |
| 44 | yes | 44 |
| 7 | no | 44 |
| 21 | no | 44 |
| 20 | no | 44 |
The code again
numbers = [24, 44, 7, 21, 20]
biggest = 0
for n in numbers:
if n > biggest:
biggest = n
print(biggest)Try it: change one number in the program and predict the new output before you run it.