/in/foo.cc:3:9: error: stray '\357' in program
 int main（）{
         ^
/in/foo.cc:3:10: error: stray '\274' in program
 int main（）{
          ^
/in/foo.cc:3:11: error: stray '\210' in program
 int main（）{
           ^
/in/foo.cc:3:12: error: stray '\357' in program
 int main（）{
            ^
/in/foo.cc:3:13: error: stray '\274' in program
 int main（）{
             ^
/in/foo.cc:3:14: error: stray '\211' in program
 int main（）{
              ^
/in/foo.cc:6:27: error: stray '\357' in program
  cout<<fixed<<setprecision（2）<<A+B;
                           ^
/in/foo.cc:6:28: error: stray '\274' in program
  cout<<fixed<<setprecision（2）<<A+B;
                            ^
/in/foo.cc:6:29: error: stray '\210' in program
  cout<<fixed<<setprecision（2）<<A+B;
                             ^
/in/foo.cc:6:31: error: stray '\357' in program
  cout<<fixed<<setprecision（2）<<A+B;
                               ^
/in/foo.cc:6:32: error: stray '\274' in program
  cout<<fixed<<setprecision（2）<<A+B;
                                ^
/in/foo.cc:6:33: error: stray '\211' in program
  cout<<fixed<<setprecision（2）<<A+B;
                                 ^
/in/foo.cc:3:5: error: cannot declare '::main' to be a global variable
 int main（）{
     ^~~~
/in/foo.cc:4:2: error: expected primary-expression before 'double'
  double A,B;
  ^~~~~~
/in/foo.cc:4:2: error: expected '}' before 'double'
/in/foo.cc:5:2: error: 'cin' does not name a type; did you mean 'sin'?
  cin>>A>>B;
  ^~~
  sin
/in/foo.cc:6:2: error: 'cout' does not name a type; did you mean 'cosl'?
  cout<<fixed<<setprecision（2）<<A+B;
  ^~~~
  cosl
/in/foo.cc:7:2: error: expected unqualified-id before 'return'
  return 0;
  ^~~~~~
/in/foo.cc:8:1: error: expected declaration before '}' token
 }
 ^