#include #include #include #include "projecteuler.h" int main(int argc, char **argv) { int count = 1, n = 1, target = 10001; double elapsed; struct timespec start, end; clock_gettime(CLOCK_MONOTONIC, &start); while(count != target) { n += 2; if(is_prime(n)) { count++; } } clock_gettime(CLOCK_MONOTONIC, &end); elapsed = (end.tv_sec - start.tv_sec) + (double)(end.tv_nsec - start.tv_nsec) / 1000000000; printf("Project Euler, Problem 7\n"); printf("Answer: %d\n", n); printf("Elapsed time: %.9lf seconds\n", elapsed); return 0; }