运行 ID: 51076

Main.cc:2:1: error: ‘include’ does not name a type
 include
 ^~~~~~~
Main.cc: In function ‘int main()’:
Main.cc:8:5: error: ‘cin’ was not declared in this scope
     cin>>x>>a>>y>>b;
     ^~~
Main.cc:8:5: note: suggested alternative:
In file included from Main.cc:1:0:
/usr/include/c++/7/iostream:60:18: note:   ‘std::cin’
   extern istream cin;  /// Linked to standard input
                  ^~~
Main.cc:10:5: error: ‘cout’ was not declared in this scope
     cout<& __os)
     ^~~~
Main.cc:12:5: error: ‘retuun’ was not declared in this scope
     retuun 0;
     ^~~~~~
Main.cc:12:5: note: suggested alternative: ‘setbuf’
     retuun 0;
     ^~~~~~
     setbuf