Compilare: main.cpp: In function 'void func(std::string, int, int)': main.cpp:12:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | while (start >= 0 && end < str.length() && str[start] == str[end]) | ~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int countPalindromicSubstrings(std::string)': main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < str.length(); i++) | ~~^~~~~~~~~~~~~~