05. Square Frame

import java.util.Scanner;

public class SquareFrame {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        for (int i = 0; i < n; i++) {
            char angleChar = '|';
            if (i == 0 || i == n - 1) {
                angleChar = '+';
            }
            System.out.print(angleChar);

            for (int j = 0; j < n - 2; j++) {
                System.out.print(" -");
            }
            System.out.println(" " + angleChar);
        }
    }
}