/in/foo.cc: In function 'int countSubstrings(std::string, std::string)':
/in/foo.cc:6:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |     for (int i = 0; i <= clothStrip.length() - smallStrip.length(); ++i) {
      |                     ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~