Compilare: main.cpp: In function 'int main()': main.cpp:34:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i=s.size();i<t.size();i++) | ~^~~~~~~~~ main.cpp:44:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | if(k==s.size()-1) | ~^~~~~~~~~~~~