Compilare: user.cpp: In function ‘void insert(Trie*, int)’: user.cpp:51:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==c.size()) ^ user.cpp: In function ‘int dfs(Trie*)’: user.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int getind(char)’: user.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] } ^