foo.cc: In function 'int main()':
foo.cc:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for (int i = 0; i < str2.size(); i++)
      |                         ~~^~~~~~~~~~~~~
foo.cc:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for (int i = 0; i < str1.size(); i++)
      |                         ~~^~~~~~~~~~~~~
foo.cc:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |                 if (j < str2.size()&&str1[i] == str2[j])
      |                     ~~^~~~~~~~~~~~~
foo.cc:40:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |                 if (j == str2.size())
      |                     ~~^~~~~~~~~~~~~~

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