Conditionals

Affect the sequential flow of control by executing different statements based on the value of a Boolean expression.

IF (condition)
{
	<block of statements>
}

The code in <block of statements> is executed if the Boolean expression condition evaluates to true; no action is taken if condition evaluates to false.

IF (condition)
{
	<block of statements>
}
ELSE
{
	<second block of statements>
}

The code in the first <block of statements> is executed if the Boolean expression condition evaluates to true; otherwise, the code in <second block of statements> is executed.

  Cell In[1], line 3
    <block of statements>
    ^
SyntaxError: invalid syntax

Example: Calculate the sum of 2 numbers. If the sum is greater than 10, display 10; otherwise, display the sum.

num1 = INPUT
num2 = INPUT
sum = num1 + num2
IF (sum > 10)
{
	DISPLAY (10)
}
ELSE
{
	DISPLAY (sum)
}

Example

Add a variable that represents an age.
Add an ‘if’ and ‘print’ function that says “You are an adult” if your age is greater than or equal to 18.
Make a function that prints “You are a minor” with the else function.

age = input("age: ")
if int(age) >= 18:
    print("Adult")
else:
    print("Minor")

Minor

Example

Make a variable called ‘is_raining’ and set it to ‘True”.
Make an if statement that prints “Bring an umbrella!” if it is true
Make an else statement that says “The weather is clear”.

is_raining = False
if is_raining:
    print("Bring a umbrella")
else:
    print("The weather is clear")

The weather is clear

Example

Make a function to randomize numbers between 0 and 100 to be assigned to variables a and b using random.randint
Print the values of the variables
Print the relationship of the variables; a is more than, same as, or less than b

import random


a = random.randint(0,100)
b = random.randint(0,100)
print(a, b)

if a > b:
    print( str(a) + " > " + str(b) )
elif a < b: 
    print( str(a) + " < " + str(b) )
else:
    print( str(a) + " = " + str(b) )

19 6
19 > 6

Hacks

Review each of the sections above and add to the following code …

Add more questions relating to Boolean rather than only one per topic (ideas: expand on conditional statements, relational/logical operators)
Add a way to organize the user scores (possibly some kind of leaderboard, keep track of high score vs. current score, etc. Get creative!)
Remember to test your code to make sure it functions correctly.

#HOMEWORK


# The quiz contains questions related to Boolean values, Boolean expressions,
# conditional statements, relational operators, and logical operators.

# Import necessary modules
import getpass  # Module to get the user's name
import sys  # Module to access system-related information

# Function to ask a question and get a response
def question_with_response(prompt):
    # Print the question
    print("Question: " + prompt)
    # Get user input as the response
    msg = input()
    return msg

# Define the number of questions and initialize the correct answers counter
questions = 5
correct = 0

# Personalized greeting message
# Collect the student's name
user_name = input("Enter your name: ")
print('Hello, ' + user_name + " running " + sys.executable)
print("You will be asked " + str(questions) + " questions.")
answer = input("Are you ready to take a test?")

# Question 1: Boolean Basics 
# Ask a question about Boolean values and check the response
# Provide feedback based on the correctness of the response

# Question 2: Boolean Expressions
# Ask a question about Boolean expressions and their importance in programming
# Provide feedback based on the correctness of the response

# Question 3: Conditional Statements
# Ask a question about the purpose of conditional (if-else) statements in programming
# Provide feedback based on the correctness of the response

# Question 4: Relational Operators
# Ask a question about common relational operators in programming and provide examples
# Provide feedback based on the correctness of the response

# Question 5: Logical Operators
# Ask a question about the use of logical operators in programming and provide examples
# Provide feedback based on the correctness of the response

# Display the final score
# Calculate the percentage of correct answers and provide feedback
print(user_name + ", you scored " + str(correct) + "/" + str(questions))

Hello, Hey! running /opt/homebrew/opt/python@3.11/bin/python3.11
You will be asked 5 questions.
Hey!, you scored 0/5