Compilare: user.c: In function 'main': user.c:17: warning: format '%d' expects type 'int *', but argument 3 has type 'unsigned char *' user.c:22: warning: format '%d' expects type 'int *', but argument 3 has type 'unsigned char *' user.c:41: warning: suggest explicit braces to avoid ambiguous 'else' user.c:71: warning: suggest explicit braces to avoid ambiguous 'else' user.c:14: warning: 'np' may be used uninitialized in this function user.c:14: warning: 'lp' may be used uninitialized in this function user.c:14: warning: 'nr' may be used uninitialized in this function user.c:14: warning: 'lr' may be used uninitialized in this function