Power.java

// *****************************************************************
// Power.java
//
// Reads in two integers and uses a recursive power method
// to compute the first raised to the second power.
// *****************************************************************
import java.util.Scanner;
 
public class Power
{
  public static void main(String[] args)
  {
    int base, exp;
    int answer;
 
    Scanner scan = new Scanner(System.in);
 
    System.out.print("Welcome to the power program! ");
    System.out.println("Please use integers only.");
 
    //get base
    System.out.print("Enter the base you would like raised to a power: ");
    base = scan.nextInt();
 
    //get exponent
    System.out.print("Enter the power you would like it raised to: ");
    exp = scan.nextInt();
 
    answer = power (base,exp);
    System.out.println(base + " raised to the " + exp + " is " + answer);
  }
 
  // ----------------------------------------------
  // Computes and returns base^exp
  // ----------------------------------------------
  public static int power(int base, int exp)
  {
    int pow;
    if (exp == 0) {
      pow = 1;
    } else {
      pow = (base * power(base, exp-1));
    }
    return pow;
  }
}