## Boolean Expressions

This chapter introduces relational and logical operators. It also discusses the use of these operators to write Boolean expressions.

### 9. Range Testing

Answer:A 30 year old with \$10000 credit could rent a car.
age >= 21 && credit >= 10000
---------    ---------------
true            true
----------------
true

# Range Testing

Frequently you need to test if a number is within a certain range.

A welter weight boxer must weight between 136 and 147 pounds. A boxer's weight is tested before each fight to be sure that he is within his weight category. Here is a program that checks if a welter weight boxer's weight is within range:

// Ringside Weigh-in//// Boxer must weigh between 136 and 147 pounds//import java.util.Scanner;
public class Ringside{  public static void main (String[] args)    {     Scanner scan = new Scanner( System.in );    int weight;
// get the weight    System.out.print("How heavy is the boxer? ");    weight = scan.nextInt();
// check that the weight is within range    if (  )      System.out.println("In range!" );    else      System.out.println("Out of range." );  }}             

Question 9:Fill the blank so that weight is tested in two ways:weight must be equal or greater than 136weight must be less than or equal to 147