Compilare: main.cpp: In function 'int main()': main.cpp:79:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for (int j=0; j<=s.size(); j++ ) | ~^~~~~~~~~~ main.cpp:81:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | if ( j==s.size() || s[j]==' ' ) | ~^~~~~~~~~~