method.rb

require "date"

# def name_of_method(parameters)
def greeting(name)
  return "Hello, #{name}"
end

# call the method giving it an argument
# puts greeting("Arthur")

def full_name(first, last)
  first_name = first.capitalize
  last_name = last.upcase
  return "#{first_name} #{last_name}"
end

# puts full_name("ARtHuR", "LittMaNN")

def tomorrows_date()
  return (Date.today + 1).strftime("%A, %b %d")
end

# puts tomorrows_date

def max(x, y)
  if x > y
    return x
  else
    return y
  end
end

first_number = 2
second_number = 5
largest_number = max(first_number, second_number)
puts largest_number   # => 5

string.rb

# Defining a variable called age
age = 25

# Concatenation
# puts "I am " + age.to_s + " years old"

# Interpolation
puts "I am #{age} years old"

# one year passes...

# Reassignment of the variable age
# age = (age + 1)

# Incrementation
age += 1

puts "Happy birthday you are now #{age}"

puts age

variables.rb

puts "What's your first name"
first_name = gets.chomp
puts "What's your last name"
last_name = "Smith"

# puts "Hello #{first_name} #{last_name}"
puts "Hello " + first_name + " " + last_name