/in/foo.cc: In function 'int main()':
/in/foo.cc:7:36: error: expected ';' before 'a'
  cout<<"C="<<fixed<<setprecision(2)a+b<<" ";
                                    ^
/in/foo.cc:8:36: error: expected ';' before 'a'
  cout<<"S="<<fixed<<setprecision(2)a*b<<endl; 
                                    ^