Eroare de compilare: user.c: In function ‘main’: user.c:9:10: error: ‘low’ undeclared (first use in this function) high = low = 0; ^ user.c:9:10: note: each undeclared identifier is reported only once for each function it appears in user.c:8:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &lenght); ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%c", &ant, &ch); ^