编写一程序，作BCD数的四则运算，在程序中设置非压缩BCD数X，从键盘输入一位十进制数Y。将X+Y、X－Y、X＊Y及X/Y（不考虑余数）分别送ANS＿A，ANS＿S，ANS＿M及ANS＿D变量。-Write a program for the BCD number of mathematical operations, in the program to set the number of non-compressed BCD X, a decimal number from the keyboard input Y. The X+ Y, X-Y, X* Y and X/Y (without regard to the remainder) were sent to ANS_A, ANS_S, ANS_M and ANS_D variables.