Compilare: user.cpp:6:35: warning: ‘typedef’ was ignored in this declaration [enabled by default] typedef struct trie {trie *pa,*pb;}; ^ user.cpp: In function ‘int main()’: user.cpp:52:22: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%ld%c",&n,&ch); ^ user.cpp:57:18: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%ld\n",l); ^