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# short version without counter
def sum_even(n):
sum = 0
for num in range(2, n+1): # n is included in the sum if even
if(num % 2 == 0):
sum = sum + num
return sum
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def sum_even(n):
final_sum = 0
counter = 0
while counter <= n:
# check if current value is even
if counter % 2 == 0:
final_sum += counter
c += 1
return final_sum