foo.cc: In function 'int main()':
foo.cc:22:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |                 if (pos + 1 < h.size() && h[pos + 1] >= '5')
      |                     ~~~~~~~~^~~~~~~~~~
foo.cc:25:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |                 while (i < h.size() && h[i] != '.') cout << h[i++];
      |                        ~~^~~~~~~~~~
foo.cc:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         for (; i < h.size() && i <= pos + k; i++)
      |                ~~^~~~~~~~~~
foo.cc:32:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |                 if (i == pos + k && i + 1 < h.size() && h[i + 1] >= '5')
      |                                     ~~~~~~^~~~~~~~~~
foo.cc:30:16: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
   30 |         for (; i < h.size() && i <= pos + k; i++)
      |                ^
foo.cc:29:13: note: 'i' was declared here
   29 |         int i;
      |             ^

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