# Author: Scott Wehrwein
# Date: 04/13/2021
# Repeatedly prompts a user for positive numbers until a negative number
# is entered, then prints the sum of the positive numbers entered.

user_num = float(input("Enter a number: "))
while user_num > 0:
    total += user_num
    user_num = float(input("Enter a number: "))

print(total)