说明：  本程序能从键盘读入二个五位十进制数（1位符号位+4位数值位），并将这二个十进制数 分别转换为二进制数，然后求其和，再将和以十进制形式进行显示。
(this program from the keyboard read into two five decimal number (1- 4 Symbol numerical), This will be two decimal number were converted to a binary number, and then seek his, and then to decimal form shows.)