Reversing a number

int n=12345,m=0;

cout<<"Orginal No:"< 

while(n>0)

{ 

m *= 10; 

m += n%10; 

n /= 10;

} 

cout<<"\nRevesed No:"<

Recursive function 

int reverse_num(int n,int m)

{

    if(n==0)

        return m; //base (exit condition)

    m*=10;

    m+=n%10;

    return reverse_num(n/10,m); //recursive call

}