split.cpp: In function 'int main()':
split.cpp:5:41: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
5 | string d; cin >>d; for(long long o=0;o<d.size()/2;o++) { cout <<d[o];}
| ~^~~~~~~~~~~
split.cpp:6:43: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
6 | cout <<" "; for(long long o=d.size()/2;o<d.size();o++)cout <<d[o];
| ~^~~~~~~~~