# 1. 변수
# message = "Hello Python world!"
# print(message)
# message = "Hellp Python Crash Course world!"
# print(message)

# 2. 문자열
# name = "ada lovelace"
# print(name.title())
# print(name.upper())
# print(name.lower())

# first_name = "ada"
# last_name = "lovelace"
# full_name = first_name + " " + last_name

# message = "Hello, " + full_name.title() + "!"
# print(message) 

# 3. 문법에러
# message = "One of Python's strengths is its diverse community."
# print(message)

# 4. 숫자와 문자
age = 23
message = "Happy " + str(age) + "rd Birthday!"

print(message)