4.5 Lesson Practice

Question: 4.1 Lesson Practice

We use loops to:

Answer: Repeat blocks of code

Question: 4.1 Lesson Practice

Consider the following code:

num = int(input(“Enter a number, negative to stop”))

while (num >= 0):

print (“You entered: “ + str(num))

num = int(input(“Enter a number, negative to stop”))

print (“Done.”)

What is wrong?

Answer: The line num = int(input(“Enter a number, negative to stop”)) should be indented so it is inside the loop

Question: 4.1 Lesson Practice

Answer: Complete the activity.

Question: 4.1 Code Practice

Answer: name = input(“Please enter a name, Nope to end “)

while (name != “Nope”):

print (“Nice to meet you “ + name)

name = input(“Please enter a name, Nope to end “)

print (“Done”)

Question: 4.2 Lesson Practice

What is output? Select all that apply.

c = 0

while (c < 10):

c = c + 5

print (c)

Answer: 5 and 10

Question: 4.2 Lesson Practice

What is output? Select all that apply.

c = 3

while (c < 10):

c = c + 2

print (c)

Answer: 5, 7, 9 and 11

Question: 4.2 Lesson Practice

What is output?

c = 1

sum = 0

while (c < 10):

c = c + 3

sum = sum + c

print (sum)

Answer: 21

Question: 4.2 Lesson Practice

What should be entered to make the loop print

60

70

80

x = 50

while (x < 80):

x = x + ____

print (x)

Answer: 10

Question: 4.2 Code Practice: Question 1

Answer: sum = 0

count = 0

while (sum <= 100):

count +=1

num = int(input(“Enter a number: “))

sum += num

print(“Sum: “ + str(sum))

print(“Numbers entered: “ + str(count))

Question: pet = input(“What pet do you have?”)

count = 0

while (pet!= “rock”):

count +=1

print (“You have a “ + str(pet) + “ with a total of “ + str(count) + “ pet(s)”)

pet = input(“Enter pet: “)

Answer: 4.2 Code Practice: Question 2