Compilare: main.cpp: In function 'int main()': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(i = 1; i < comb.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:28:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(i = ult[comb.size() - 1]; i < t.size(); i++) fout << t[i]; | ~~^~~~~~~~~~