该程序实现显示一个数字的方阵，程序中的清屏功能可将上次运行的结果

清除，重新显示下次运行结果。本程序在dos中或windows98中运行。-The program shows a number of the square, clear screen function in the program may be the last run clear, re-display the next time you run the results. This program is run in dos in or windows98.