foo.cc: In function ‘void get_Next(std::string, int*)’:
foo.cc:10:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   10 |         for (int i = 1; i < s.size(); i++)
      |                         ~~^~~~~~~~~~
foo.cc: In function ‘int strSTR(size_t, std::string, std::string)’:
foo.cc:31:29: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   31 |         for (int i = pos; i < s.size(); i++)
      |                           ~~^~~~~~~~~~
foo.cc:43:23: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   43 |                 if (j == t.size())
      |                     ~~^~~~~~~~~~~
foo.cc: In function ‘int main()’:
foo.cc:57:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   57 |         while (pos < s.size() && pos != -1)
      |                ~~~~^~~~~~~~~~