Sum of Array - Eiffel Typing CST Test

Sum of Array — Eiffel Code

Calculates the sum of an array of integers.

class
	ARRAY_SUM
feature
	sum_array (arr: ARRAY[INTEGER])
		local total, i: INTEGER
		do
		total := 0
		from i := arr.lower until i > arr.upper loop
		total := total + arr[i]
		i := i + 1
		end
		io.put_string ("Sum: "); io.put_integer(total); io.put_new_line
		end
end

! Run
local
	a: ARRAY_SUM
	arr: ARRAY[INTEGER]
	i: INTEGER
do
	create a
	create arr.make(1,5)
	arr[1] := 1; arr[2] := 2; arr[3] := 3; arr[4] := 4; arr[5] := 5
	a.sum_array(arr)
end

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