This code calculates the average of positive numbers, but it is missing the condition for the loop on line $14.$ Let$$s use $-1$ as the sentinel value. Add the condition to the while loop to run while the user does not input $-1.$ What would happen if you forgot step $3($change the loop variable $-$ get a new input$)?$ Try commenting out line $19$ with $//$ to see what happens $($note there is a stop button at the top!$).$