tail recursion - power function

Question

I try to write power function using tail recursion but I don't get the right answer what is wrong?
// tail function
long int TailRec (int number , int p_number , int counter = 1 ){

if (p_number == 1) return counter ;
else TailRec (number , p_number-1 , number*counter );
}

//main function
int main()
{

long int result = TailRec(2,2) ;
cout<<result ;
}
//out put
2

Answer 1

change your test to
if (!p_number) return counter;

And it will work fine

Answer 2

number! =1 for first run.
so it goes to else and returns 2*1

Answer 3

thank u guys, I fixed that silly mistake but i have and another question is this really a tail recursive function?