/in/foo.cc: In function 'int main()':
/in/foo.cc:36:13: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   if(a%4==0 && a%100!=0 || a%400==0)
      ~~~~~~~^~~~~~~~~~~
/in/foo.cc:39:16: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",m); 
                ^