Compilare: user.c: In function ‘main’: user.c:42:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:44:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^ user.c:57:12: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out, "%d\n%d\n", p + 1, p + 2); ^