diff options
Diffstat (limited to 'c/sum-of-multiples/src/sum_of_multiples.c')
-rw-r--r-- | c/sum-of-multiples/src/sum_of_multiples.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/c/sum-of-multiples/src/sum_of_multiples.c b/c/sum-of-multiples/src/sum_of_multiples.c new file mode 100644 index 0000000..9ad1eb1 --- /dev/null +++ b/c/sum-of-multiples/src/sum_of_multiples.c @@ -0,0 +1,17 @@ +#include "sum_of_multiples.h" +#include <stdlib.h> +#include <stdbool.h> + +unsigned int sum(const unsigned int *factors, + const size_t number_of_factors, const unsigned int limit) { + unsigned int total = 0; + bool *seen = calloc(limit, sizeof(*seen)); + for (size_t idx = 0; idx < number_of_factors; idx++) + for (size_t num = 0; num < limit; num++) + // factors[idx] shouldn't be 0. (% fails) + if (!seen[num] && factors[idx] && !(num % factors[idx])) { + total += num; + seen[num] = true; + } + return total; +} |