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POoutput an error when someone enters a letter as a menu choice
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  1. POoutput an error when someone enters a letter as a menu choice
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    copied!<p>I want to make this program output an error when someone enters a letter as a menu choice</p> <pre><code>package main; import java.util.Scanner; public class Main { Scanner input = new Scanner(System.in); public static void main(String[] args) { int UserIn = 0; double numberInputA; double numberInputB; double Answer; Scanner input = new Scanner(System.in); while (UserIn != 5) { System.out.println("What type of calculation would you like to perform?"); System.out.println("1. Add\n2. Subtract\n" + "3. Multiply\n4. Divide\n5. Exit"); UserIn = input.nextInt(); if (UserIn &gt; 5) { System.out.println("ERROR choose the numbers on the menu"); } else if (UserIn &lt; 1) { System.out.println("ERROR choose the numbers on the menu"); } if (UserIn &lt; 5) { System.out.println("Enter first number:"); numberInputA = input.nextDouble(); System.out.println("Enter second number"); numberInputB = input.nextDouble(); if (UserIn == 1) { Answer = numberInputA + numberInputB; System.out.println("Number 1 is:" + numberInputA); System.out.println("Number 2 is:" + numberInputB); System.out.println("Result is : " + Answer); System.out.println(""); } if (UserIn == 2) { Answer = numberInputA - numberInputB; System.out.println("Number 1:" + numberInputA); System.out.println("Number 2:" + numberInputB); System.out.println("Result is :" + Answer); System.out.println(""); } if (UserIn == 3) { Answer = numberInputA * numberInputB; System.out.println("Number 1:" + numberInputA); System.out.println("Number 2:" + numberInputB); System.out.println("Result is :" + Answer); System.out.println(""); } if (UserIn == 4) { Answer = numberInputA / numberInputB; System.out.println("Number 1:" + numberInputA); System.out.println("Number 2:" + numberInputB); System.out.println("Result is :" + Answer); System.out.println(""); } } if (UserIn == 5) { System.out.println("Program exited"); } } } } </code></pre>
 

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