利用LabVIEW编写一个贪吃蛇程序，实现功能如下：1.设置难易程度及相关的得分　　　　 2.小蛇在碰壁和撞尾的时候会死亡，即弹出对话框游戏结束
3.设置时间文本，可显示玩的时间长短
4.利用键盘的上下左右箭头控制小蛇的行动。(Using LabVIEW to write a snake program, to achieve the following functions: 1. set the level of difficulty and the score of 2. will die on the wall and the snake tail hit, that is the end of the game pop-up dialog box
3. set the time text, can show the length of play
4. use the keyboard on the down arrow snake control action.)