foo.cc: In function 'int isLeapYear(int)':
foo.cc:6:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    6 |  return year%4==0&&year%100!=0||year%400==0;
      |         ~~~~~~~~~^~~~~~~~~~~~~
foo.cc: In function 'int passDays(int, int, int)':
foo.cc:32:15: warning: unused variable 's' [-Wunused-variable]
   32 |  int m,days=0,s;
      |               ^
foo.cc: In function 'int daysOfYear(int)':
foo.cc:41:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   41 |  if(year%4==0&&year%100!=0||year%400==0)
      |     ~~~~~~~~~^~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:62:17: warning: unused variable 'days' [-Wunused-variable]
   62 |  int year,month,days;
      |                 ^~~~

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