## Boolean Expressions

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

### 7. Car Rental Problem

Answer:Yes. It is always good to test programs with values that are right at the limit.


# Car Rental Problem

A car rental agency wants a program to determine who can rent a car. The rules are:

• A renter must be 21 years old or older.
• A renter must have a credit card with \$10,000 or more of credit.

The program looks something like the cookie program:

// Rental Car Checker//import java.util.Scanner;public class RenterChecker{  public static void main (String[] args)   {     // Declare a Scanner and two integer variables    Scanner scan = new Scanner( System.in );     int age, credit;
// get the age of the renter    System.out.println("How old are you?");    age = scan.nextInt() ;
// get the credit line    System.out.println("How much credit do you have?");    credit = scan.nextInt() ;
// check that both qualifications are met        if (  && )      System.out.println("Enough to rent this car!" );    else      System.out.println("Have you considered a bicycle?" );  }}

Question 7:Complete the program by filling in the blanks.Consider carefully what relational operators to use.