import pygame
import sys

# Initialize Pygame
pygame.init()

# Set up the screen
screen_width = 400
screen_height = 300
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("Simple Pygame Example")

# Set up colors
RED = (255, 0, 0)

# Set up the square
square_size = 50
square_x = (screen_width - square_size) // 2
square_y = (screen_height - square_size) // 2

# Main game loop
running = True
while running:
    # Handle events
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT:
                square_x += 10

    # Clear the screen
    screen.fill((0, 0, 0))

    # Draw the square
    pygame.draw.rect(screen, RED, (square_x, square_y, square_size, square_size))

    # Update the display
    pygame.display.flip()

# Quit Pygame
pygame.quit()
sys.exit()