foo.cc: In function 'int main()':
foo.cc:8:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    8 |                 if(i%4==0&&i%100!=0||i%400==0)
      |                    ~~~~~~^~~~~~~~~~
foo.cc:13:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   13 |                 if(i%4==0&&i%100!=0||i%400==0)
      |                    ~~~~~~^~~~~~~~~~
foo.cc:21:48: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   21 |                         case 2:tot1+=28+(y%4==0&&y%100!=0||y%400==0);break;
      |                                          ~~~~~~^~~~~~~~~~
foo.cc:28:49: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   28 |                         case 2:tot2+=28+(y2%4==0&&y2%100!=0||y2%400==0);break;
      |                                          ~~~~~~~^~~~~~~~~~~

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