A program to find and print REVERSE of a given number

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