How to use for loop to count?

I have a list of patients, and want to use a for loop to count how many of them are over the age of 12. Very new to loops - any type of help would be appreciated!

patient_ages = [15 8 6 12 16 3 18 12 13 9 8 15 5 2]
over12 = 0 
for i=1:length(patient_ages)
    if patient_ages > 12
        over12 = over12 +1
    end
end
return over12

Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.

Answer 1

[VBBV]

patient_ages = [15 8 6 12 16 3 18 12 13 9 8 15 5 2]
over12 = 0 
for i=1:length(patient_ages)
  if patient_ages(i) > 12
      over12 = over12 +1
  end
end
over12

[VBBV]

Use the for loop index i for the vector.

[Sushi]

Thank you so much! :)

[VBBV]

return is a keyword and usually applicable when the program control is being transferred from within a loop to an external function

[Sushi]

Understood! Appreciate it!