# summing up all numbers from 0 to N, using a while loop
# this example intentionally uses wrong indentation at the last line,
# to illustrate the difference that it makes, compared to the correct
# indentation at file summing_to_N_while_loop.py

# get N from the user
N_string = input("please enter N: ")
N = int(N_string)

# compute the sum
total = 0
i = 0
while i <= N:
    total = total + i
    i = i+1

# print the result
    print("total =", total)