arrays-exercise 02, slide 28

package class170629;

import java.util.Scanner;

public class arrays02 {

    public static void main(String[] args) {
        /*
         * Exercise 2, slide 28
         * input : 10 chars to an array
         * output: the keys of the upper case letters
         */
        // create a scanner
        Scanner s = new Scanner(System.in);

        // define an integer array, size=10
        char[] chars = new char[10];

        System.out.printf("Enter %d chars:\n", chars.length);
        // get data from user and save it in the array
        for (int i = 0; i < chars.length; i += 1) {
            chars[i] = s.next().charAt(0);
        }
        s.close();

        // scan the chars atrray
        for (int i = 0; i < chars.length; i += 1) {
            // if upper case
            if (chars[i] >= 'A' && chars[i] <= 'Z') {
                // print character
                System.out.printf("Upercase letter (%c) at position %d\n",
                        chars[i], i);
            }
            System.out.println();
        }
    }

}