该程序在TC3.0环境下编译通过，共有9个函数。分别是printScreen，start，leave，levelChoice，newWord，moving，wordHit，result和main。

其功能分别是：

printScreen：刷新屏幕输出的图像。

Start：用户进入程序时选择开始，退出和求助。

Leave：用户离开程序事提示感谢使用

levelChoice：用户开始之前选择等级

newWord：生成一个新的字母并将其置于首行。

moving：将屏幕上的所有字母向下移动一行

wordHit：判断用户是否输入字母，如果输入，且屏幕上有该字母则将该字母所在位置置空。

result：判断该用户的得分，提示其是否进入下一等级。

main：总体控制以上各函数，判断其是否运行。

-The program in TC3.0 environment compiler, a total of nine functions. Are printScreen, start, leave, levelChoice, newWord, moving, wordHit, result and main.

Its functions are:

printScreen: refresh image screen output.

Start: Select Start, quit and help the user to enter the program.

Leave: it prompts the user to leave the program thanks to the use of

levelChoice: Before users begin to select rating

newWord: Generate a new letter and placed first line.

moving: all the letters on the screen will move down one line

wordHit: determine whether the user enter letters, if you enter, and there are the letters of the alphabet where the blank screen.

result: Analyzing the user s score is prompted whether to proceed to the next level.

main: total control over each function, determine whether it is running.