/in/foo.cc: In function 'int main()':
/in/foo.cc:8:9: error: 'cin' was not declared in this scope
    8 |         cin>>a>>b>>c；
      |         ^~~
/in/foo.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <stdio.h>
  +++ |+#include <iostream>
    2 | using namespace std;
/in/foo.cc:8:20: error: 'c\U0000ff1b' was not declared in this scope
    8 |         cin>>a>>b>>c；
      |                    ^~~
/in/foo.cc:14:9: error: 'else' without a previous 'if'
   14 |         else if(b>c&&b>a)
      |         ^~~~
/in/foo.cc:34:9: error: 'cout' was not declared in this scope
   34 |         cout<<mid<<","<<max<<endl;
      |         ^~~~
/in/foo.cc:34:9: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
/in/foo.cc:34:30: error: 'endl' was not declared in this scope
   34 |         cout<<mid<<","<<max<<endl;
      |                              ^~~~
/in/foo.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    1 | #include <stdio.h>
  +++ |+#include <ostream>
    2 | using namespace std;