First Variables in Ruby
Introduction example from a Well House Consultants training course
More on Introduction [link]
Source code: col1 Module: R101
# Ruby is a language where variables are automatically
# created and typed ... as in this example where the
# merchant wants 75 pounds and the VAT has gone up to
# a shocking 19.5%
# Variable names start with a letter, followed by as
# many (or as few) letters, digits and underscores
# as you wish
puts "Hello World"
merchant = 75
alastair = 19.5
charges = merchant * (100 + alastair) / 100
puts "Lying in Melksham - the sea is solid"
puts "It's a sunny day"
puts "Tax rate is",alastair,"at present"
puts "charge 'em",charges
# I have used "puts" here but there are many alternatives
# even in a simple example like this one!
#* Sample Output
#* WomanWithCat:r101 grahamellis$ ruby col1
#* Hello World
#* Lying in Melksham - the sea is solid
#* It's a sunny day
#* Tax rate is
#* at present
#* charge 'em
#* WomanWithCat:r101 grahamellis$
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This module and example are covered on the following public courses:
* Learning to program in Ruby
* Ruby Programming
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