Compilare: main.cpp: In function 'void ins(trie*, int, int)': main.cpp:24:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'void del(trie*, int)': main.cpp:42:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for (int j = 0; j < s.size(); j++) | ~~^~~~~~~~~~ main.cpp:96:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~