input: Write a function to print all elements from a given list that are greater than 50.
  assert print_elements_greater_than_50([2, 60, 5, 4, 78, 32, 99])
  assert print_elements_greater_than_50([3, 55, 73, 88, 6, 12])
  assert print_elements_greater_than_50([51, 52, 53, 54, 55])
output: def print_elements_greater_than_50(lst):
      for num in lst:
          if num > 50:
              print(num)