declaring variable inside/outside the loop which is better?

Question

ex #1
while(condition) {
int temp;
... }

ex #2
int temp;
while(condition) {
... }

when temp is only used inside the loop, is there any difference between those two?
if there is which is better example?

Answer 1

If you declare it inside it becomes local and when loop ends it gets deleted, this can free-up memory but this int won't be accessible from outside…