Compilare: user.cpp: In constructor ‘node::node()’: user.cpp:19:32: warning: passing NULL to non-pointer argument 2 of ‘void* memset(void*, int, size_t)’ [-Wconversion-null] memset(next,NULL,sizeof(next)); ^ user.cpp: In function ‘int PrintWordsNumber(char*, node*)’: user.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int LongestPrefix(char*, node*, int)’: user.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type] } ^