Question 1: Control

>>> def xk(c, d):
...     if c == 4:
...         return 6
...     elif d >= 4:
...         return 6 + 7 + c
...     else:
...         return 25
>>> xk(10, 10)
______

>>> xk(10, 6)
______

>>> xk(4, 6)
______

>>> xk(0, 0)
______

>>> def how_big(x):
...     if x > 10:
...         print('huge')
...     elif x > 5:
...         return 'big'
...     elif x > 0:
...         print('small')
...     else:
...         print("nothin'")
>>> how_big(7)
______

>>> how_big(12)
______

>>> how_big(1)
______

>>> how_big(-1)
______

>>> n = 3
>>> while n >= 0:
...     n -= 1
...     print(n)
______

Hint: Make sure your while loop conditions eventually evaluate to a false value, or they'll never stop! Type Ctrl-C will stop infinite loops in the interpreter.

>>> positive = 28
>>> while positive:
...     print("positive?")
...     positive -= 3
______

>>> positive = -9
>>> negative = -12
>>> while negative:
...     if positive:
...         print(negative)
...     positive += 3
...     negative += 3
______