foo.cc:6:2: error: expected initializer before 'int'
  int year;
  ^~~
foo.cc:7:2: error: 'cin' does not name a type
  cin>>year;
  ^~~
foo.cc:8:2: error: expected unqualified-id before 'if'
  if(year%400==0||(year%4==0))
  ^~
foo.cc:13:5: error: expected unqualified-id before '{' token
     { 
     ^

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