foo.cc: In function 'int cantor(const string&)':
foo.cc:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(int i = 0; i < s.size(); i ++){
      |                    ~~^~~~~~~~~~
foo.cc:26:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         for(int j = i + 1; j < s.size(); j ++){
      |                            ~~^~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |     for(int i = 0; i < start.size(); i ++)
      |                    ~~^~~~~~~~~~~~~~

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Found 10 testcases.
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