foo.cc: In function 'int main()':
foo.cc:10:17: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   10 |  if(str1.size() == size) {
      |     ~~~~~~~~~~~~^~~~~~~
foo.cc:15:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   15 |  while(str1.size() < size){
      |        ~~~~~~~~~~~~^~~~~~

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