A possible CodeRunner question of the type "Write a function" could be the following.
Write a function calc(num) which tests if a given positive number num is a prime number or not.
If it is a prime number, the function must return the value 0.
If it is not a prime number, the function must return 1.
Your code is automatically checked with several test cases. Two of them are listed here with the expected result.
For example:
Test Result
a = calc(5)
print(a)
0
a = calc(8)
print(a)
1
Answer: (penalty regime: 0%)