编写完整程序从键盘读取字符，如果是十进制的‘0’～‘9’则在屏幕上输出该数的8位二进制码，并将数字依次存放到BUF开头的数组中，如果读入的字符是’Q’或者‘q’，则程序退出，其他情况在屏幕上打印“You must input 0~9, or ‘q’ or ‘Q’”。（如输入的字符是‘9’，则输出“00001001”）-Write a complete program reads characters from the keyboard, if it is a decimal ' 0 ' to ' 9' , the output of the 8-bit binary code number on the screen and stored in numerical order beginning BUF array, if the read character is ' Q'　or ' q' , then the program exits, otherwise the print on the screen " You must input 0 ~ 9, or ' q'　or ' Q' " . (If the input character is ' 9 ' , the output " 00001001" )