Compilare: user.c: In function ‘main’: user.c:15:9: warning: format ‘%i’ expects argument of type ‘int *’, but argument 2 has type ‘long unsigned int *’ [-Wformat=] scanf("%i", &n); ^ user.c:21:9: warning: format ‘%i’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=] printf("%i\n", sz); ^ user.c:12:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &x); ^ user.c:15:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &n); ^