CODEWITHSUNDEEP
java
Agame
Agame

Reputation: 11

Multiplying Integer to a Certain Power Using Loops

I am trying to create a program that takes an integer base and integer exponent and multiply that integer to the certain power entered. But this code doesn't work. What am I doing wrong?

import java.io.*;

import java.util.Scanner; 

import java.text.*;

public class Unit3_Lesson4_17 {

    static Scanner in = new Scanner(System.in); 

    public static void main() {

        Scanner scanner = new Scanner(System.in);   

        DecimalFormat mf = new DecimalFormat("'$'###,###,###.00");    
        DecimalFormat df = new DecimalFormat("#.###"); 


        int i, exp, base, answer;  

        String start;

        System.out.println("Hit Enter to Begin");
        start = scanner.nextLine();

        System.out.println("Enter the number");
        base = in.nextInt(); 

        System.out.println("Enter the exponent"); 
        exp = in.nextInt();

        answer = base;

        for (i=1; i<=exp; i++) {
            answer = answer * base;
        }

        System.out.println("The answer is " + answer);
        System.out.println("This program is over!"); 
    }
}

Upvotes: 1

Views: 407

Answers (2)

azurefrog
azurefrog

Reputation: 10945

Your error is actually algorithmic in nature.

You are multiplying answer by base, exp times, but you also start answer with an initial value of base. This means your output is base*baseexp.

You need to either initialize answer to 1, or change your for loop from

for (i=1; i<=exp; i++)

to

for (i=1; i<exp; i++)

Upvotes: 2

Vincent
Vincent

Reputation: 882

Java already provides this functionality.

answer = Math.pow(base,exp);

Upvotes: 0

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