// Exercise 7.39 Solution: Exponential.cs
// Application calculates value of exponent.
using System;

public class Exponential
{
   // call method Power passing user input
   public static void Main( string[] args )
   {
      int baseNumber; // the base to raise to a power
      int exponent; // the power to raise to

      // prompt user for base and obtain value from user
      Console.Write( "Enter base: " );
      baseNumber = Convert.ToInt32( Console.ReadLine() );

      // prompt user for exponent and obtain value from user
      Console.Write( "Enter exponent: " );
      exponent = Convert.ToInt32( Console.ReadLine() );

      if ( exponent > 0 ) {
         int result = Power( baseNumber, exponent );
         Console.WriteLine( "Value is {0}", result );
      } // end if
      else
         Console.WriteLine( "Invalid Exponent." );
   } // end method Main

   // recursively calculate value of exponent.
   public static int Power( int baseNumber, int exponent )
   {
      if ( exponent == 1 )         
         return baseNumber;
      else
         return baseNumber * Power( baseNumber, exponent - 1 );
   } // end method Power

/*public static int Power (int baseNumber, int exponent)
{if (exponent > 1)
    return baseNumber * Power ( baseNumber, exponent - 1);
    else
    return baseNumber;
}*/
    







} // end class Exponential