Fortran Implementation of Problem 1
View source code here on GitHub!
- integer Problem0001/p0001()
1! Project Euler Question 1
2!
3! I did it the old-fashioned way in this language
4!
5! Problem:
6!
7! If we list all the natural numbers below 10 that are multiples of 3 or 5, we
8! get 3, 5, 6 and 9. The sum of these multiples is 23.
9!
10! Find the sum of all the multiples of 3 or 5 below 1000.
11
12module Problem0001
13 implicit none
14contains
15 integer function p0001() result(answer)
16 integer :: i
17 answer = 0
18
19 do i = 3, 999, 3
20 answer = answer + i
21 end do
22
23 do i = 5, 999, 5
24 answer = answer + i
25 end do
26
27 do i = 15, 999, 15
28 answer = answer - i
29 end do
30 end function p0001
31end module Problem0001