/in/foo.cc: In function 'int main()':
/in/foo.cc:44:27: warning: 'a3' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(a1%x==0||a2%x==0||a3%x==0||a4%x==0||a5%x==0)
                         ~~^~
/in/foo.cc:77:11: warning: 'max' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<max;
           ^
/in/foo.cc:75:5: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
  x++;
     ^