Compilare: main.cpp: In function 'void Insert(Trie*, char*, int)': main.cpp:58:15: warning: NULL used in arithmetic [-Wpointer-arith] if (*w == NULL) ^~~~ main.cpp: In function 'int Code(char)': main.cpp:37:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:116:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ main.cpp:119:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ main.cpp:124:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", s); ^