gistfile1.c

#include <LiquidCrystal.h>

LiquidCrystal g_lcd( 12, 11, 5, 4, 3, 2 );	// rs, enable, d4, d5, d6, d7

void setup()
{
        pinMode(9, INPUT);
        pinMode(8, INPUT);
        pinMode(7, OUTPUT);
	g_lcd.begin( 16, 2 );
	g_lcd.clear();
}

int my = 0;

void loop()
{
  g_lcd.setCursor( 0, 1 );
  for (int i = 0; i < my; i++) {
    g_lcd.print(" ");
  }
  g_lcd.print("A");
  for (int i = my; i < 15; i++) {
    g_lcd.print(" ");
  }
  if (digitalRead(9) == HIGH) {
    if (my > 0) {  my -= 1; }
    g_lcd.setCursor( 0, 0 );
    g_lcd.print("      <<-      ");
    tone(7, 262, 100);
  }
  else if (digitalRead(8) == HIGH) {
    if (my < 15) { my += 1; }
    tone(7, 523, 100);
    g_lcd.setCursor( 0, 0 );
    g_lcd.print("      ->>      ");
  }
  else {
    //g_lcd.clear();
  }
        
  delay( 100 );
}