Compilare: main.cpp: In function 'void ver(int)': main.cpp:39:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=lenght; i<=s.size()-2*lenght; i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | if(d[s.size()-1]>s.size()/2) | ~~~~~~~~~~~~~^~~~~~~~~~~