Question: Task 5. Write a recursive function rec_sum(int n) to sum up all the numbers from 1 to n. For example, rec_sum(4) should return 10 because

Task 5. Write a recursive function rec_sum(int n) to sum up all the numbers from 1 to n. For example, rec_sum(4) should return 10 because 1 + 2+ 3+ 4 = 10. Then, write an iterative function iter_sum(int n) to complete the same task using iterations

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