/in/foo.cc: In function 'int main()':
/in/foo.cc:6:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(year % 100 != 0 && year %4 ==0|| year % 400 == 0){
        ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
/in/foo.cc: At global scope:
/in/foo.cc:18:1: error: expected unqualified-id before 'return'
 return 0;
 ^~~~~~
/in/foo.cc:19:1: error: expected declaration before '}' token
 }
 ^