Answer: Python Puzzler #1638

The answer is A. The program prints:

3 2
What the program prints
Checked by running the program for real.

Why?

// divides and throws away the remainder: each friend gets 3 sweets. % gives the remainder: 2 sweets left over.

Trace table

A trace table follows the program step by step. Here’s this one:

sumanswer
14 // 43
14 % 42

The code again

sweets = 14
friends = 4
print(sweets // friends, sweets % friends)

Try it: change one number in the program and predict the new output before you run it.