package com.thealgorithms.conversions;

import java.util.Scanner;

/**
 * Converts any Octal Number to a Decimal Number
 *
 * @author Zachary Jones
 */
public class OctalToDecimal {

    /**
     * Main method
     *
     * @param args Command line arguments
     */
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Octal Input: ");
        String inputOctal = sc.nextLine();
        int result = convertOctalToDecimal(inputOctal);
        if (result != -1) {
            System.out.println("Result convertOctalToDecimal : " + result);
        }
        sc.close();
    }

    /**
     * This method converts an octal number to a decimal number.
     *
     * @param inputOctal The octal number
     * @return The decimal number
     */
    public static int convertOctalToDecimal(String inputOctal) {
        try {
            // Actual conversion of Octal to Decimal:
            return Integer.parseInt(inputOctal, 8);
        } catch (NumberFormatException ne) {
            // Printing a warning message if the input is not a valid octal
            // number:
            System.out.println("Invalid Input, Expecting octal number 0-7");
            return -1;
        }
    }
}
