foo.cc: In function 'int isLeapYear(int)':
foo.cc:5:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    5 |  if(year%4==0&&year%100!=0||year%400==0)
      |     ~~~~~~~~~^~~~~~~~~~~~~
foo.cc: In function 'int rqc(int, int, int, int, int, int)':
foo.cc:41:5: warning: 'zd' may be used uninitialized in this function [-Wmaybe-uninitialized]
   41 |   zd+=365-passDays(y1,m1,d1);
      |   ~~^~~~~~~~~~~~~~~~~~~~~~~~

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