Compilare: main.cpp: In function 'int main()': main.cpp:23:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<str.size();i++) | ~^~~~~~~~~~~ main.cpp:28:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(c==' '||i+1==str.size()) | ~~~^~~~~~~~~~~~ main.cpp:17:7: warning: unused variable 'i' [-Wunused-variable] 17 | int i, maxi, mini; | ^