bad operand types for binary operator >=, -, *

Question

I\'m having trouble figuring out how to fix these errors I keep getting for my code

import java.util.Scanner;

public class Unit02Prog1 {

    public static void         


        

Answer 1

What you are doing wrong

if (numWords >= 50) {

numWords is a string, and >= only works on numbers.

How to fix

You have 2 options for fixing this:

• Read the number in as a String and convert it to a number

  temp = input.nextLine();
  numWords = Integer.parseInt(temp);
  

  This way means you can check manually, and do not need to catch an exception if the number is wrong.

• Read the number in as a number straight away

  numWords = input.nextInt();
  

  This way is less code, but you will need to catch a NumberFormatException if the input is not an integer.

Other notes

• You use input.next() a lot, depending on your inputs you may want to use nextLine instead
• You may want to use System.out.printf to clean up your printing code