/in/foo.cc: In function 'int main()':
/in/foo.cc:25:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   25 |                                 if(year%4==0&&year%100!=0||year%400==0)
      |                                    ~~~~~~~~~^~~~~~~~~~~~~
/in/foo.cc:5:24: warning: unused variable 'date' [-Wunused-variable]
    5 |         int year,month,date;
      |                        ^~~~