More Exceptions Hackerrank

using System;

//Write your code here
public class Calculator{
    public int power(int n,int p){
        int sum = 1;
        if(n < 0 || p < 0){
            throw new Exception("n and p should be non-negative");
        }
        else {
            while(p > 0){
                sum *= n;
                p--;
            }
        }
        return sum;
    }
}

public class Solution{
    public static void Main(String[] args){
        Calculator myCalculator=new  Calculator();
        int T=Int32.Parse(Console.ReadLine());
        while(T-->0){
            string[] num = Console.ReadLine().Split();
            int n = int.Parse(num[0]);
            int p = int.Parse(num[1]);
            try{
                int ans=myCalculator.power(n,p);
                Console.WriteLine(ans);
            }
            catch(Exception e){
               Console.WriteLine(e.Message);

            }
        }



    }
}