Part1

num1 = 10

num2 = 12

num3 = num1 - num2 + 12

fin = open("myfile.txt", "w")

fin.write("line 1: " + str(num1) + " ")

num1 += 5

fin.write("line 2: " + str(num2) + " ")

num2 -= 11

fin.write("line 3: " + str(num3) + " ")

fin.write("line 4: " + str(num1 + num2 + num3) + " ")

fin.write("line 5: " + str(num3 - num2 + num1) + " ")

fin.close()

For the following exercises, refer to the program segment.

(1) ( File Processing )

When the above code segment is executed, and data is recorded to the output file, what value will be displayed next to the following line number in this file?

line 1:

(a) 15 (b) 24 (c) 26 (d) 10 (e) 12

(2) ( File Processing )

When the above code segment is executed, and data is recorded to the output file, what value will be displayed next to the following line number in this file?

line 2:

(a) 15 (b) 24 (c) 26 (d) 10 (e) 12

(3) ( File Processing )

When the above code segment is executed, and data is recorded to the output file, what value will be displayed next to the following line number in this file?

line 3:

(a) 15 (b) 24 (c) 26 (d) 10 (e) 12

(4) ( File Processing )

When the above code segment is executed, and data is recorded to the output file, what value will be displayed next to the following line number in this file?

line 4:

(a) 15 (b) 24 (c) 26 (d) 10 (e) 12

(5) ( File Processing )

When the above code segment is executed, and data is recorded to the output file, what value will be displayed next to the following line number in this file?

line 5:

(a) 15 (b) 24 (c) 26 (d) 10 (e) 12

Part 2 Exercises - Recursion and Random Numbers

Enter T for True or F for False.

from random import randint

n = int(input())

m = int(input())

random1 = randint(m, n)

print (random1)

Considering the above program segment, answer each of these as True or False.

_____ (1) If the user enters 10 for n and 5 for m , then the random number 6 may be displayed by the program.

_____ (2) If the user enters 0 for n and 7 for m , then the program will exhibit a run - time error.

_____ (3) If the user enters 5 for n and 5 for m , then the program will exhibit a run - time error.

_____ (4) If the user enters 6 for n and 0 for m , then the program will generate a number that appears on a face of a typical six - sided playing die.

_____ (5) If the user enters 50 for n and 1 for m , then the random number 51 may be displayed by the program.

Part 3 Programming Exercises - Recursion and Random Numbers

Select the correct answer or enter the result in the space provided.

(1) A recursive function with parameter n counts from any negative number to 0 . An appropriate base case would be n == 0 .

(a) True (b) False

(2) A recursive function can have two base cases, such as n == 0 returning 0 , and n == 1 returning 1 .

(a) True (b) False

(3) n factorial ( n! ) is commonly implemented as a recursive function due to being easier to understand and executing faster than a loop implementation.

(a) True (b) False

(4) How many times will this recursive function be called?

def count_down(count):

if count == 0:

print("Blast Off!")

else :

print(count)

count_down(count - 1)

count_down(3)

(a) 5 (b) 4 (c) 3 (d) 2 (e) 1

(5) How many times will this recursive function be called?

def factorial(n) :

if (n == 1) :

return 1

else :

return n * factorial(n - 1)

result = factorial(5)

print (result)

(a) 120 (b) 1 (c) 3 (d) 5 (e) 7