using System;
public class Reverse
{
public static void Main()
int n,y;
Console.WriteLine("enter a numer");
n=Convert.ToInt32(Console.ReadLine());
y=rev(n);
Console.WriteLine(y);
}
public static int rev(int k)
int r,sum=0;
while(k!=0)
r=k%10;
sum=sum*10+r;
k=k/10;
return sum;