Reverse Number Program in C

#include <stdio.h>
int main()
{
	int n,rev=0,temp,r;
	printf("Enter a Number : ");
	scanf("%d",&n);                       
	temp=n;
	while(n!=0)
	{
		r=n%10;
		rev=rev*10+r;
		n=n/10;
	}
	n=temp;
	printf("Reverse of %d is : %d\n",n,rev);
}