/in/foo.cc: In function 'int main()':
/in/foo.cc:12:2: error: expected ';' before 'else'
  else
  ^~~~
/in/foo.cc:6:6: warning: unused variable 'w' [-Wunused-variable]
  int w=1,ww,a=1,b=1,c;
      ^
/in/foo.cc:6:13: warning: unused variable 'a' [-Wunused-variable]
  int w=1,ww,a=1,b=1,c;
             ^
/in/foo.cc:6:17: warning: unused variable 'b' [-Wunused-variable]
  int w=1,ww,a=1,b=1,c;
                 ^
/in/foo.cc:6:21: warning: unused variable 'c' [-Wunused-variable]
  int w=1,ww,a=1,b=1,c;
                     ^
/in/foo.cc:30:1: error: expected '}' at end of input
 }
 ^