Compilare: main.cpp: In function 'void add_trie(trie*, char*)': main.cpp:33:13: warning: unused variable 'b' [-Wunused-variable] 33 | int b = 8 / a; | ^ main.cpp:29:13: warning: unused variable 'b' [-Wunused-variable] 29 | int b = 8 / a; | ^ main.cpp: In function 'bool del_trie(trie*, char*)': main.cpp:49:13: warning: unused variable 'b' [-Wunused-variable] 49 | int b = 8 / a; | ^ main.cpp: In function 'int main()': main.cpp:95:14: warning: variable 'ch' set but not used [-Wunused-but-set-variable] 95 | char *s, ch; | ^~ main.cpp:98:13: warning: unused variable 'b' [-Wunused-variable] 98 | int b = 8 / a; | ^ main.cpp:103:16: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized] 103 | fin >> s; | ^