功能：输入num个两位数据(00~99)，显示求出的和与平均数

说明：以英文输入法,输入格式为98,95,90,96,94…,每次两位，最后以回车结束

注意：输入成绩的个数超过或者少于num定义的个数，程序均会提示出错信息

开发平台：emu8086 V4.05-　Function: Enter a two num data (00 to 99), calculated and displayed with the Mean

　Descr iption: English input method, the input format for 98,95,90,96,94 ..., every two, and finally end with a carriage return

　Note: The number of input scores than or less than the number num is defined, the program will prompt an error message

　Development Platform: emu8086 V4.05