C language: use pointers to achieve reverse output of arrays

#include<stdio.h>
fun(int *p){
	int t,*q=p+5;
	while(p<q){
		t=*p;
		*p=*q;
		*q=t;
		p++;
		q--;
	}
}
int main(){
	int a[]={0,1,2,3,4,5};
	fun(a);
	for(int i=0;i<6;i++)
	printf("%d,",a[i]);
	return 0;
}