# Ruby: Sum of Fibonacci odd numbers

What is the sum of all odd numbers in the Fibonnoci sequence that are less than 5000?

```
class Fibonacci
def initialize
@a = 1
@b = 1
@total = 0
end
# Example #1 uses @instance variables
# of a class
def sum_odd(number)
while @a <= number
if @a.odd? # Syntactic Sugar
@total += @a
end
@a, @b = @b, @a + @b
end
puts %Q{ Total: #{@total} }
end
# Example #2 uses local variables.
# I wrote this to make it easy
# to re-write in Javascript or Python
def sum_even(number)
a = 1
b = 1
total = 0
while a <= number
if a % 2 == 0
total += a
puts %Q{ Is Even Number }
else
puts %Q{ Is Odd Number }
end
a, b = b, a + b
end
puts %Q{ Total: #{total} }
end
end
fib = Fibonacci.new
fib.sum_odd(5000)
```