switch_case

import java.util.Scanner;
public class switch_case {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
    /* TODO: The program takes a membership level as input and displays
             the benefits associated with that membership.
        */
        System.out.print("Enter your membership level (1 for Basic, 2 for Silver, 3 for Gold, 4 for Platinum): ");
        int membershipLevel = scanner.nextInt();
        String benefits;

        switch (membershipLevel) {
            case 1:
                benefits = "Basic Membership: Access to standard content, 5% discount on products.";
                break;
            case 2:
                benefits = "Silver Membership: Access to premium content, 10% discount on products, Early access to sales.";
                break;
            case 3:
                benefits = "Gold Membership: Access to all content, 15% discount on products, Early access to sales, Priority support.";
                break;
            case 4:
                benefits = "Platinum Membership: Access to exclusive content, 20% discount on products, Early access to sales, Priority support, Free shipping.";
                break;
            default:
                benefits = "Invalid membership level entered!";
                System.out.println(benefits);
                return;
        }
        System.out.println(benefits);

        /* TODO: In this program, the user will input a color name, and
            the program will display the corresponding hex code for that color.
         */
        System.out.print("Enter a color name (e.g., Red, Green, Blue): ");
        String color = scanner.nextLine();
        String hexCode;

        switch (color) {
            case "red":
                hexCode = "#FF0000";
                break;
            case "green":
                hexCode = "#00FF00";
                break;
            case "blue":
                hexCode = "#0000FF";
                break;
            case "yellow":
                hexCode = "#FFFF00";
                break;
            case "black":
                hexCode = "#000000";
                break;
            case "white":
                hexCode = "#FFFFFF";
                break;
            case "purple":
                hexCode = "#800080";
                break;
            default:
                hexCode = "Invalid color entered. Please enter a valid color name.";
        }
        System.out.println("Hex Code: " + hexCode);

        /* TODO: A program to calculate the result of a basic arithmetic
            operation (addition, subtraction, multiplication, or division)
            based on the operator input
         */
        System.out.print("Enter the first number: ");
        double num1 = scanner.nextDouble();
        System.out.print("Enter the operator (+, *, /): ");
        char operator = scanner.next().charAt(0);
        System.out.print("Enter the second number: ");
        double num2 = scanner.nextDouble();
        double result = 0.0;
        switch (operator) {
            case '+':
                result = num1 + num2;
                break;
            case '*':
                if (num1 == 0 || num2 == 0) {
                    System.out.println("Multiply by zero, always results in zero");
                    return;
                } else {
                    result = num1 * num2;
                }
                break;
            case '/':
                if (num2 != 0) {
                    result = num1 / num2;
                } else {
                    System.out.println("Error: Division by zero.");
                    return;
                }
                break;
            default:
                System.out.println("Invalid operator.");
                return;
        }
        System.out.println(num1 + " " + operator + " " + num2 + " = " + result);


        // TODO: using multiple labels
        int num = 2;
        switch (num) {
            case 1, 2, 3:
                System.out.println("Low number");
                break;
            case 4, 5, 6:
                System.out.println("Medium number");
                break;
            default:
                System.out.println("High number");
        }

        // TODO: using "switch expression"
        char letter = 'e';
        String letter_result;
        switch (letter) {
            case 'a', 'e', 'i', 'o', 'u' -> letter_result = "Vowel";
            default -> letter_result = "Consonant";
        }
        System.out.println(letter_result);



        int role = 2;  // role can be 1 (Admin), 2 (Moderator), or 3 (User)
        String accessLevel;

        accessLevel = switch (role) {
            case 1, 2 -> "Elevated privileges";
            case 3 -> "Basic access";
            default -> "Invalid role";
        };
        System.out.println(accessLevel);



        String productName = "laptop";
        String category;

        switch (productName) {
            case "laptop", "smartphone", "tablet" -> category = "Electronics";
            case "shirt", "pants", "jacket" -> category = "Clothing";
            default -> category = "Unknown Category";
        }
        System.out.println(category);
    }
}