运行 ID: 129591

Main.cc: In function ‘int main()’:
Main.cc:6:14: error: ‘pow’ was not declared in this scope
  int ab=sqrt(pow(x1-x2,2)+pow(y1-y2,2));
              ^~~
Main.cc:6:14: note: suggested alternative: ‘putw’
  int ab=sqrt(pow(x1-x2,2)+pow(y1-y2,2));
              ^~~
              putw
Main.cc:6:9: error: ‘sqrt’ was not declared in this scope
  int ab=sqrt(pow(x1-x2,2)+pow(y1-y2,2));
         ^~~~
Main.cc:6:9: note: suggested alternative: ‘qsort’
  int ab=sqrt(pow(x1-x2,2)+pow(y1-y2,2));
         ^~~~
         qsort