Compilare: main.cpp: In constructor 'Trie::Trie()': main.cpp:12:20: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null] 12 | memset(fii,NULL,sizeof(fii)); | ^~~~ In file included from /usr/include/c++/10/cstring:42, from main.cpp:2: /usr/include/string.h:61:37: note: declared here 61 | extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1)); | ~~~~^~~ main.cpp: In function 'void insert(Trie*, char*, int, int, std::vector<std::pair<int, Trie*> >*)': main.cpp:23:12: warning: NULL used in arithmetic [-Wpointer-arith] 23 | if(*s==NULL) | ^~~~