Tracing

a	Counter	Sum	Output	Input
		0	Enter a value:	4
4	0	4	Enter a value:	0
0	5	5	Enter a value:	2
2	10	7	Enter a value:	3
3	15	10	Enter a value:	0
0	20	11	Enter a value:	5
5	25	6	Enter a value:	-6
-6	30	0	Enter a value:	4
4	35

Sum <-- 0

Print Enter a value:

Get a

Loop: Counter = 0 To 30 Step 5

If (a != 0)

Sum <-- (Sum + a)

Else

Sum <-- (Sum + 1)

End If

Print Enter a value:

Get a

Loop-End: Counter

a	Counter	Sum	Output	Input
		0	Enter a value:	7
7				0
				0
				3
				3
				0
				0
				4

Print Result is: , Sum

End

What is the purpose of this algorithm?