The answer is D. The program prints:
5 0
This answer was checked by running the program for real.
Why?
// divides and throws away the remainder: each friend gets 5 sweets. % gives the remainder: 0 sweets left over.
Trace table
A trace table follows the program step by step. Here’s this one:
| sum | answer |
|---|---|
| 20 // 4 | 5 |
| 20 % 4 | 0 |
The code again
sweets = 20
friends = 4
print(sweets // friends, sweets % friends)Try it: change one number in the program and predict the new output before you run it.