Compilare: main.cpp: In constructor 'Aho::Aho()': main.cpp:25:38: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null] memset(son, NULL, sizeof(son)); ^ main.cpp:26:37: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null] memset(go, NULL, sizeof(son)); ^ main.cpp:28:40: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null] memset(from, NULL, sizeof(from)); ^ main.cpp: In function 'void add(int, int, Aho*)': main.cpp:38:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == s.size()) ~~^~~~~~~~~~~ main.cpp: In function 'void buildlinks()': main.cpp:57:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < Q.size()) { ~~^~~~~~~~~~