Compilare: user.c: In function ‘lipsa’: user.c:47:13: warning: unused variable ‘g’ [-Wunused-variable] double f, g, l = sqrt((a.y - b.y) * (a.y - b.y) + (a.x - b.x) * (a.x - b.x)), h = l * sqrt(3) / 2, dx; ^ user.c: In function ‘main’: user.c:88:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:90:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lf%lf", &v[i].x, &v[i].y); ^