Compilare: main.cpp: In function 'std::string built_word()': main.cpp:86:77: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | while( s[s_size] != ')' && s[s_size] != ']' && s[s_size] != '*' && s_size < s.length() ){ | ~~~~~~~^~~~~~~~~~~~ main.cpp:84:8: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 84 | bool ok; | ^~