Compilare: main.cpp: In function 'int main()': main.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (int i = 0; i < word.size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:69:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for (int len = 1; len < word.size(); ++len) { | ~~~~^~~~~~~~~~~~~ main.cpp:70:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for (int i = 0; i + len < word.size(); ++i) { | ~~~~~~~~^~~~~~~~~~~~~