could someone plz help me out in the queueArr program ..I've made it public

Question

even if I'm not entering any input, it's giving the output

Answer 1

If you don't enter anything into the array then your array is full of whatever garbage is left behind in those memory locations. If you ran this on your PC you'd probably see different value or output for each of the non-existant elements in the array. The value you are getting here seems to be SL's default garbage memory value.