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triangle.rb~
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# Triangle Project Code.
# Triangle analyzes the lengths of the sides of a triangle
# (represented by a, b and c) and returns the type of triangle.
#
# It returns:
# :equilateral if all sides are equal
# :isosceles if exactly 2 sides are equal
# :scalene if no sides are equal
#
# The tests for this method can be found in
# about_triangle_project.rb
# and
# about_triangle_project_2.rb
#
def triangle(a, b, c)
# WRITE THIS CODE
if (a==0) || (b==0) || (c==0)
raise TriangleError, "Zero length"
end
if ((a+b)<c) || ((a+c)<b) || ((c+b)<a)
raise TriangleError, "Size constraint violated"
end
if a==b && a==c
return :equilateral
end
if (a==b && a!=c) || (a==c && a!=b) || (b==c && b!=a)
return :isosceles
end
if a!=b && a!=c && b!=c
return :scalene
end
end
# Error class used in part 2. No need to change this code.
class TriangleError < StandardError
end