Attached is my code, on lines $65-77,$ I implemented the function to calculate the exponent of any number. I$\text{'}$m not getting the correct output though, did I type the functions wrong? Attached are the functions and my own code with it's output.Another recursive definition of $p(x,n)=x^n$ :

$p(x,n)=\{\begin{array}{ccc}1& if& n=0\\ x*(p(x,& \frac{n-1}{2}){)}^{2}ifn1is\text{o}\text{d}\text{d}& \\ (p(x,& \frac{n}{2}){)}^{2}ifn1is\text{e}\text{v}\text{e}\text{n}\text{.}& \end{array}$