Weather.java

/*
Module 2: Critical Thinking Assignment

Adding Variables to Pseudocode
*/

import java.util.Scanner;

/**
 * Asks a user to enter a letter.
 * If the letter is between A and E, write the word sunny.
 * If the letter is between J and P, write the word cloudy.
 * If the letter is between Q and X, write the word rainy.
 * If the input is any other letter, returns a statement that it is not a valid option.
 */
public class Weather {

    /**
     * Predicts the weather based on the Unicode value of a character (case-sensitive).
     * If the letter is between A and E, returns sunny.
     * If the letter is between J and P, returns cloudy.
     * If the letter is between Q and X, returns rainy.
     * If the value is any other letter, returns a statement that it is not a valid option.
     *
     * @param asciiValue the Unicode value of the input character.
     * @return The predicted weather based on the Unicode value of the input character.
     */
    public static String weather(int asciiValue) {
        if (asciiValue < 65 || asciiValue > 88 || (69 < asciiValue && asciiValue < 74)) {
            return "It is not a valid option";
        }
        if (asciiValue <= 69) {  // 65 - 69; A to E
            return "sunny";
        } else if (asciiValue <= 80) {  // 75 to 80; J to P
            return "cloudy";
        }
        return "rainy";  // 81 to 88; Q to X
    }

    /**
     * Prompts the user for an input and returns its Unicode value.
     * Returns 0 if the input is not a single character.
     *
     * @return the Unicode value of the input character, or 0 if it is not a single character.
     */
    public static int getInput() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a letter: ");
        String input = scanner.nextLine();
        if (input.length() == 1) {
            scanner.close();
            return input.charAt(0);
        }
        scanner.close();
        return -1;
    }

    public static void main(String[] args) {
        System.out.printf("%s\n", weather(getInput()));
    }
}