Task_9_input_conversion.md

Task 9 - User input and type conversion

The input() function pauses your program, shows a prompt, and returns a string containing whatever the user typed. To do arithmetic or other non-text work, convert that string to the needed type.

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Quick demo

x = input("Enter a number: ")   # x is a string
print(type(x))                  # <class 'str'>

# Convert to int, add 1
y = int(x) + 1
print("x + 1 is", y)

# Other built-in converters
int("7")        # -> 7
float("3.14")   # -> 3.14
bool("")        # -> False  (empty string)
bool("hello")   # -> True   (any non-empty string)
str(42)         # -> "42"

Note: For booleans, an empty value ("", 0, 0.0) is False. Anything else is True.

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Your exercise

1. Create a file called Task_9.py.
2. Ask the user for their age with input("Age: ") and store it in age_str.
3. Convert age_str to an integer named age_int.
4. Print a message using an f-string: You will be <age_int + 5> in five years.
5. Ask the user to enter a decimal price, convert it to float, add 20% tax, and print the total.
6. Finally, prompt the user for any text, convert it to bool, and print whether Python considered it True or False.

Run the script several times with different inputs to see how each conversion behaves.