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Section 4.4 Evaluate Conditionals-WE2-P1
Subgoals for Evaluating Selection Statements.
-
Diagram which statements go together by indentation
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For conditional, determine whether expression is true
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If true, follow true branch
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If false, follow next elif/else branch or exit conditional if no else branch
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Repeat step 2 as necessary
Subsection 4.4.1 Conditionals-WE2-P1
Each question below is independent.
Exercises Exercises
1.
Q7: What is the output of the following code?
x = 0
if x = 0: # look closely!
print("0 is true")
else:
print("0 is false")
There is no output because a compiler error occurs
There is no output because an exception occurs
2.
Q8: What is the output of the following code?
if False:
print("it is true")
else:
print("it is false")
There is no output because a compiler error occurs
There is no output because an exception occurs
3.
Q9: What is the output of the following code?
if 12 < 12:
print("Never")
else:
print("Always")
There is no output because a compiler error occurs
There is no output because an exception occurs
4.
Q10: What is the output of the following code?
var1 = 15.0
var2 = 25.12
if 2 * var1 >= var2:
print("O.K.")
else:
print("Not O.K.")
There is no output because a compiler error occurs
There is no output because an exception occurs
5.
Q11: What is the output of the following code?
a = 10
b = 5
c = 3
if b < c:
print(c)
elif b < a:
print(a)
else:
print(b)
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