Assessment: Conditionals

Section 4.3 Assessment: Conditionals

Subgoals for writing conditionals:.

Define how many mutually exclusive paths are needed
Order paths from most restrictive to least restrictive
Write conditional statement with Boolean expression
Follow with true path including action in indentation
Repeat 3 and 4 until all paths are included
(Optional) Follow with else path including action in indentation

Exercises Exercises

1.

Q1: What is the output of the following code?

a = 10
b = 20
if 2 * a >= b:
    print("Yes")
else
    print("No")

Yes
No
There is no output because a compiler error occurs
There is no output because an exception occurs

2.

Q2: Click on all conditions that are true in the following code prior to the code being executed:

a = 5
b = 20
c = 15
if 2 * a >= b:
    print("Double a")
elif 2 * c >= b:
    print("Double c")
elif 2 * b >= b:
    print(“Double b”)

3.

Q3: What is the output of the following code?

if 5 == (10 // 2):
    if 5 % 2 > 0:
        if 0:
            conditions = 0
        else:
            conditions = 5
    else:
        conditions = 10
else:
    conditions = 15
if conditions:
    if conditions % 2 > 0:
        print("Odd")
    else:
        print("Even")
else:
    print("Conditions not met")

4.

Q4: Enter the value of each variable after the following code is executed:

a = 0
b = 1
c = 2
if a < c:
    a = c
if 2 * b == c:
    c = 0
elif 2 * b < c:
    b = 0
else:
    a = 0
if c:
    c = 2*(b + a)
elif b:
    b = 2*(a + c)
elif a:
    a = 2*(b + c)

The value of variable a is , the value of variable b is , and the value of variable c is .

5.

Put the code in the right order to create a program that will ask the user for a number between -20 and 20 (inclusive).Print the number. Then check if the number is positive, negative, or neither. Print the result.

x = int(input("Please enter an integer between -20 and 20: "))
---
print(x)
---
if x > 0:
---
    result = "Positive"
---
elif x < 0:
---
    result = "Negative"
---
else:
---
    result = "Neither"
---
print(result)

6.

Put the code in the right order to create a program that will generate a random number (1 to 100 inclusive), and print the number. Check if the number is a multiple of 2 and print the result. Then check if the number is a multiple of 3 and print the result. Then check if the number is a multiple of 5 and print the result.

x = int(input("Please enter an integer between 1 and 100: "))
---
print(x)
---
if x % 2 == 0:
---
    print(x, "is a multiple of 2.")
---
elif x % 2 != 0:
---
    print(x, "is not a multiple of 2.")
---
if x % 3 == 0:
---
    print(x, "is a multiple of 3.")
---
elif x % 3 != 0:
---
    print(x, "is not a multiple of 3.")
---
if x % 5 == 0:
---
    print(x, "is a multiple of 5.")
---
elif x % 5 != 0:
---
    print(x, "is not a multiple of 5.")

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