Write a Java program that reads in a number a The program prints "yes" when 10 ≤ a ≤ 20 and "no" otherwise.

if ( 10 <= a <= 20 ) System.out.println("yes"); else System.out.println("no");

Because 10 <= a <= 20 is evaluated as follows:

Expression: 10 <= a <= 20 Operators: <= <= Evaluated as: 10 <= a <= 20 (10 <= a is either true or false) true <= 20 or false <= 20

It is illegal to use the compare <= operator between a Boolean value and a number

if ( 10 <= a && a <= 20 ) System.out.println("yes"); else System.out.println("no");

Because only numbers that are between 10 and 20 will satisfy the condition 10 <= a && a <= 20

import java.util.Scanner; public class Between01 { public static void main(String[] args) { int a; Scanner in = new Scanner(System.in); // Construct Scanner object a = in.nextInt(); // Read in number into a if ( 10 <= a && a <= 20 ) { System.out.println("Number is between 10 and 20"); } else { System.out.println("Number is NOT between 10 and 20"); } } }

• Prog file: click here

How to run the program:

Right click on link and save in a scratch directory To compile:   javac Between01.java To run:          java Between01