Compilare: main.cpp: In constructor 'node::node()': main.cpp:12:15: warning: array subscript has type 'char' [-Wchar-subscripts] 12 | f[i] = NULL; | ^ In constructor 'node::node()', inlined from 'void update(node*, std::string&, int)' at main.cpp:21:37: main.cpp:12:16: warning: array subscript 97 is above array bounds of 'node* [26]' [-Warray-bounds] 12 | f[i] = NULL; | ~~~^ main.cpp: In function 'void update(node*, std::string&, int)': main.cpp:6:12: note: while referencing 'node::f' 6 | node *f[26]; | ^ In constructor 'node::node()', inlined from 'int main()' at main.cpp:59:22: main.cpp:12:16: warning: array subscript 97 is above array bounds of 'node* [26]' [-Warray-bounds] 12 | f[i] = NULL; | ~~~^ main.cpp: In function 'int main()': main.cpp:6:12: note: while referencing 'node::f' 6 | node *f[26]; | ^ In constructor 'node::node()', inlined from 'int main()' at main.cpp:59:22: main.cpp:12:18: warning: 'void* __builtin_memset(void*, int, long unsigned int)' offset 776 is out of the bounds [0, 216] [-Warray-bounds] 12 | f[i] = NULL; | ^