class GeoPoint
def check_lat(lat)
unless lat <= 180 and lat >= -180
raise ArgumentError, 'not a correct latitude'
end
end
def check_lon(lon)
unless lon <= 180 and lon >= -180
raise ArgumentError, 'not a correct longitude'
end
end
def initialize(lat, lon)
check_lat(lat)
check_lon(lon)
@lat = lat
@lon = lon
end
def lat
@lat
end
def lat=(newlat)
check_lat(newlat)
@lat = newlat
end
def lon
@lon
end
def lon=(newlon)
check_lon(newlon)
@lon = newlon
end
def to_str
(@lat >= 0 ? "N" + @lat.to_s : "S" + (-@lat).to_s) + " " +
(@lon >= 0 ? "E" + @lon.to_s : "W" + (-@lon).to_s)
end
end
geo = GeoPoint.new(39.1915045, -96.6070506)
puts geo.lat
puts geo.lon
puts geo.to_str
