Compilare: main.cpp: In function 'void Add_TRIE(std::string, int, nod_TRIE*)': main.cpp:26:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if( i==s.size() ) | ~^~~~~~~~~~ main.cpp: In function 'bool Delete_TRIE(std::string, int, nod_TRIE*)': main.cpp:43:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if( i==s.size() ) | ~^~~~~~~~~~ main.cpp: In function 'int How_manny(std::string, int, nod_TRIE*)': main.cpp:62:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | if( i==s.size() )return x->is_last_leter; | ~^~~~~~~~~~