Hello,
I'm trying to correctly solve the first projecteuler.net problem. The
question is as so: Find the sum of all the multiples of 3 or 5 below 1000.
I wrote the following program, but the number found is incorrect. I created
a function that adds multiples of a given number to a global variable until
the multiples are greater than 1000. The solution I get with my code is
"1224". This is incorrect, but I am having trouble understanding why my code
is wrong... it's very simple.
My code:
#!!/usr/local/bin/python3.0
#problem1.py
"""Lists the sum of all multiples of 3 and 5 less than 1000."""
# Initialize variable 'total'.
total = 0 # I wanted this to be 'None', is that wrong?
def sumTotal(multiple):
global total # Brings total into the local scope so it
# can be written to.
n = 2
while multiple < 1000:
total = total + multiple
multiple = multiple * n
n = n + 1 # I wanted this to be += but I'm not sure
# that is right.
# Now I call the function with the two arguments I need, 3
# and 5. Since total is a global variable it retains its value
# at the end of the first function call, the next call adds to
# the total value. Thus print(total) should give me the correct
# value.
sumTotal(3)
sumTotal(5)
print(total)
-----
I think I have made a mistake with scope. Or some other syntactic error,
because I don't see anything wrong with the code. Please make it obvious for
me.
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