foo.cc: In function 'int main()':
foo.cc:8:19: error: expected primary-expression before ')' token
  if(year%400==0 ||)
                   ^
foo.cc:11:1: error: 'eles' was not declared in this scope
 eles
 ^~~~
foo.cc:14:9: error: expected '}' at end of input
 return 0;
         ^

[Hydro](https://hydro.ac)提供评测服务