Exercises_Ch_006.py

# "Python Programming: An Introduction to Computer Science, Third Edition" by John Zelle
# Chapter 6: Defining Functions
# End-of-Chapter Exercises

# REVIEW QUESTIONS

# True/False

#  1. F
#  2. F
#  3. T
#  4. T
#  5. F
#  6. F
#  7. Python functions can never modify parameters. FALSE
#     [Note: This is true of OOP languages in general, I think, as opposed to functional programming languages.
#     Explanation: p.193: "In some cases, functions can also communicate back to the calling program by making
#     changes to the function parameters."]
#  8. T
#  9. R
# 10. F

# Multiple Choice

#  1. B
#  2. A
#  3. A
#  4. B
#  5. D
#  6. A
#  7. D
#  8. A
#  9. D
# 10. A

# Discussion

#  1. In your own words, describe the two motivations for defining functions in your programs.
#  2. 
#  3.
#
#  4.
#
#  5. 


# PROGRAMMING EXERCISES

#  1.
#

def refrain():
    print("Old MacDonald had a farm, Ee-igh, Ee-igh, Oh!")

def animal(kind, noise):
    refrain()
    print("And on that farm he had a " kind "Ee-igh, Ee-igh, Oh!")
    print("With a " noise", " noise " here and a " noise", " noise " there.")
    print("Here a " noise ", there a " noise ", everywhere a " noise ".")
    refrain()

def main:
    animal("pig", "oink")
    print()
    animal("duck", "quack")
    print()
    animal("sheep", "baah")
    print()
    animal("cow", "moo")
    print()
    animal("dog", "woof")

#  2. Write a program to print the lyrics for ten verses of "The Ants Go Marching." A couple of sample versus are given below.
#     You may choose your own activity for the "little one" in each verse, but be sure to choose something that makes the rhyme
#     work (or almost work).

#  3. Write definitions for these functions:

#  4.

#  5.

#  6.

#  7.

#  8.

#  9.

# 10.

# 11.

# 12.

# 13.

# 14.

# 15.

# 16.

# 17.

# 9.

#10.