Module 4: User Input Practice

Anatomy of Getting Input

The `input()` function lets your program ask the user for information. Click the parts below to identify them.
Focus: Interaction.

                        user_name = input("Enter your name: "
                         )
                     

Identify all 6 parts!

Input & Output Flow

See how `input()` works with `print()`. Write code to ask for a favorite color, then print a message using it. Enter a sample color in the "Simulated Input" box *before* running.

Code Editor:

Simulated Input:

Simulated Output:

Output appears here...

The Type Mystery

`input()` always gives back text (a string), even if the user types numbers! This can cause surprises. Predict the outcome for each case below.
Focus: Data Manipulation (Types).

Case 1: Adding Numbers?

Imagine the user enters '5' when asked for `num1` and '3' for `num2`.

num1_str = input("Enter first number: ")
num2_str = input("Enter second number: ")
result = num1_str + num2_str
print(result)
                        

What will be printed?

8 53 An Error Message

Case 2: The Fix with `int()`

Now we use `int()` to convert the input. User enters '10' then '4'.

num1_str = input("Enter first number: ")
num2_str = input("Enter second number: ")
num1_int = int(num1_str) # Convert to integer
num2_int = int(num2_str) # Convert to integer
result = num1_int + num2_int
print(result)
                        

What will be printed?

104 An Error Message 14

Practice Type Conversion

Now you try! Write code to ask the user for their birth year. Convert it to an integer using `int()`, calculate their approximate age in 2024, and print the age. Use the simulator below.
Focus: Interaction & Data Manipulation.

Code Editor:

Simulated Input (Year):

Simulated Output:

Output will appear here...

Input Mini Missions!

Combine `input()` and type conversion to solve these tasks. Enter sample input before testing each mission!

Mission 1: Simple Greeting

Ask the user for their name and print a greeting like "Hello, [Name]!". (No type conversion needed here!)

Simulated Name:

Mission 2: Age Next Year

Ask the user for their current age (as a number). Convert it to an integer using `int()` and print their age next year.

Simulated Age:

Mission 3: Price + Tax

Ask for an item price (can have decimals). Convert it to a float using `float()`. Calculate a 10% tax (price * 0.10) and print *only* the tax amount.

Simulated Price:

Module 4 Practice Complete!

Excellent work! You've practiced getting user input and handling different data types.
Ready for a bigger challenge? Try the Advanced Practice for Module 4!

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