Chris Pine, Learn to Program Chapter 4 - Mixing it Up

# conversions… computer doesn't know if we want to add 2 + 5 = 7 or 2 and 5 = 25, so need to convert var1 to a string in order to put 25
var1 = 2
var2 = '5'

puts var1.to_s + var2
# and vice-versa to put 7 via conerting a string to an integer
puts var1 + var2.to_i

# other conversions - note: computer ignores first thing it doesn't understand. rb.14/15
puts '15'.to_f
puts '99.999'.to_f
puts '99.999'.to_i
puts ''
puts '5 is my favorite number!'.to_i
puts 'Who asked you about 5 or whatever?'.to_i
puts 'Your momma did.'.to_f
puts ''
puts 'stringy'.to_s
puts 3.to_i

# Before  puts tries to write out an object, it uses to_s to get the string version of that object. In fact, the s in puts stands for string; puts really means put string.
puts 20
puts 20.to_s
puts '20'

# gets and chomp methods

puts 'Hello there, and what\'s your name?'
name = gets.chomp
puts 'Your name is ' + name + '? What a lovely name!'
puts 'Pleased to meet you, ' + name + '. :)'

# asks for a person's first name, then middle, then last. Finally, it should greet the person using their full name
puts 'Hello! What\'s your first name?'
firstName = gets.chomp
puts 'Great! ' + firstName + ', what\'s your middle name?'
middleName = gets.chomp
puts 'OK, ' + firstName + ' ' + middleName + ', what\'s your last name?'
lastName = gets.chomp
puts 'Wonderful! Welcome to my domain, ' + firstName + ' ' + middleName + ' ' + lastName + '!'

# Write a program which asks for a person's favorite number. Have your program add one to the number, then suggest the result as a bigger and better favorite number.
puts 'Yo dude, what\'s your favorite number?'
number = gets.chomp
new_number = number.to_i + 1
puts 'OK. That\'s nice and all, but I reckon ' + new_number.to_s + ' is bigger and better.'