Selection Exercises

Comparison (relational and equality) Operators:

1. With your neighbor, identify the 6 common comparison operators and explain what each one does:
   1. ==, tests for equality (Example: a*a == b*b + c*c)

Logical Operators:

1. With your neighbor, identify the 3 logical operators and explain what each one does:
   1. and, combines two boolean expressions and results in True if and only if both of the boolean expressions are True (Example: (age >= 13) and (acceptedAgreementTerms == True))
2. Given a variable age, write a boolean expression that evaluates to True only when age represents a teenager. (Can you come up with another way to evaluate age that meets this criterion?)
3. What does the following evaluate to?

   hairColor == "blond" or "brown" or "red" or "black"
   

4. Determine the correct order of precedence among the following:

   Category	Operators
   addition	+,-
   exponent	**
   logical	and
   logical	or
   logical	not
   multiplication	*,/,//,%
   relational	==,!=,<=,>=,>,<

5. Add as many parenthesis as possible to the the following expressions (without the order of operations):
   1. val * 3 > 10 and option == True or override == True
   2. 5 + 6 * 7 / 8 > 9 and 4 - 3 ** 2 / 10 or fee / 10 < 100
   3. fileExists == False or fileOpenedSuccessfully == True and errorReadingFile == True
6. Draw flowcharts for the following two if-statements:

   if fellowScouter == True:
       shakeWithLeftHand()
   else:
       shakeWithRightHand()
   

   if name == "Honey":
       print("Love ya!")
   else:
       print("See ya")
   

7. Individually, code two if-else statements and two if statements. Be sure to include the ":"(s) and to indent the code in each body. Share your examples with your neighbor.