Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90. Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also indicate if the (primary) highway runs north/south or east/west. Ex: If the input is: 90 the output is: I-90 is primary, going east/west. Ex: If the input is: 290 the output is: I-290 is auxiliary, serving I-90, going east/west. Ex: If the input is: 0 or any number not between 1 and 999, the output is: 0 is not a valid interstate highway number. This is the code I am using, but something is not functioning properly. import java.util.Scanner; public class LabProgram{ public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int highwayNumber; int primaryNumber=0; highwayNumber = scnr.nextInt(); if (highwayNumber >= 1 && highwayNumber <= 999) if (highwayNumber <= 99) { if (highwayNumber % 2 == 0) System.out.println("I-" + highwayNumber + " is primary, going east/west."); else System.out.println("I-" + highwayNumber + " is primary, going north/south."); } else { primaryNumber = highwayNumber; highwayNumber %= 100; System.out.println(primaryNumber + " is an auxiliary highway, serving primary highway " + highwayNumber); } else { System.out.println(primaryNumber + " is not a valid interstate highway number."); } } } These are the results I am getting: Input 90 Your output I-90 is primary, going east/west. Expected output I-90 is primary, going east/west. Input 290 Your output 290 is an auxiliary highway, serving primary highway 90 Expected output I-290 is auxiliary, serving I-90, going east/west. Input 0 Your output 0 is not a valid interstate highway number. Expected output 0 is not a valid interstate highway number. Input 5 Your output I-5 is primary, going north/south. Expected output I-5 is primary, going north/south. Input 405 Your output 405 is an auxiliary highway, serving primary highway 5 Expected output I-405 is auxiliary, serving I-5, going north/south. Input 1000 Your output 0 is not a valid interstate highway number. Expected output 1000 is not a valid interstate highway number.
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90.
Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also indicate if the (primary) highway runs north/south or east/west.
Ex: If the input is:
90
the output is:
I-90 is primary, going east/west.
Ex: If the input is:
290
the output is:
I-290 is auxiliary, serving I-90, going east/west.
Ex: If the input is:
0
or any number not between 1 and 999, the output is:
0 is not a valid interstate highway number.
This is the code I am using, but something is not functioning properly.
import java.util.Scanner;
public class LabProgram{
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
int highwayNumber;
int primaryNumber=0;
highwayNumber = scnr.nextInt();
if (highwayNumber >= 1 && highwayNumber <= 999)
if (highwayNumber <= 99) {
if (highwayNumber % 2 == 0)
System.out.println("I-" + highwayNumber + " is primary, going east/west.");
else
System.out.println("I-" + highwayNumber + " is primary, going north/south.");
}
else
{
primaryNumber = highwayNumber;
highwayNumber %= 100;
System.out.println(primaryNumber + " is an auxiliary highway, serving primary highway " + highwayNumber);
}
else
{
System.out.println(primaryNumber + " is not a valid interstate highway number.");
}
}
}
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