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Iterate through the given array and return the number of fours.
looping
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Write a Python function sum_even_numbers that takes a list of integers as an input and returns the sum of all the even numbers in the list. You should use a loop to iterate through the list to find and sum the even numbers.
Write a Python function sum_even_numbers that takes a list of integers as an input and returns the sum of all the even numbers in the list. You should use a loop to iterate through the list to find and sum the even numbers.
