Write a java program to find x to the power n (i.e. x^n). Take x and n from the user. You need to return the answer.

Calculating power is a fundamental operation in mathematics and computer programming. Whether you are working on a scientific project or a programming task, you will need to calculate power at some point. In this article, we will explore the concept of power and provide a solution for calculating it using a simple program.

What is Power?

Power is a mathematical operation that involves raising a number to a certain exponent or power. The power of a number represents how many times the number is multiplied by itself. For example, 2 raised to the power of 3 (written as 2^3) is equal to 2 x 2 x 2, which equals 8.

The formula for calculating power is:

x^n = x × x × x × … × x (n times)

where x is the base and n is the exponent.

Solution for Calculating Power

Now that we understand what power is, let's write a simple program to calculate it. We will take the base and exponent values from the user and return the result.

Here's the code:

java code


import java.util.Scanner;

public class Power {
   public static void main(String[] args) {
      Scanner input = new Scanner(System.in);
      System.out.print("Enter the base: ");
      int x = input.nextInt();
      System.out.print("Enter the exponent: ");
      int n = input.nextInt();
      int result = 1;
      for(int i = 1; i <= n; i++) {
         result *= x;
      }
      System.out.println(x + "^" + n + " = " + result);
   }
}

Let's break down the code:
We define a function called power that takes two parameters, x (base) and n (exponent). This function recursively calculates the power using the formula we discussed earlier.
In the power function, we have three conditions:
If n is equal to 0, we return 1 (any number raised to the power of 0 is 1).
If n is even, we calculate x raised to the power of n/2, and then multiply it by itself. This is because x^n is equal to (x^(n/2))^2. We use recursion to calculate x^(n/2).
If n is odd, we calculate x raised to the power of n-1, and then multiply it by itself. This is because x^n is equal to x * x^(n-1). We use recursion to calculate x^(n-1).
We take input from the user for x and n.
We call the power function with x and n as parameters to calculate the power.
We print the result.
Conclusion
Calculating power is a basic operation in mathematics and computer programming. In this article, we provided a solution for calculating power using a simple program in Python. This program can be used in various applications where power calculations are required.

Write a java program to find x to the power n (i.e. x^n). Take x and n from the user. You need to return the answer.