class Integer < Data4
def <(right)
X.comparison(:<)
end
def +(right)
X.int_operator(:+)
class Space
def main(arg)
n = 6
a = 0
b = 1
i = 1
while( i < n )
result = a + b
a = b
b = result
i = i + 1
return result
#Space.new.main(1)