汇编程序从键盘输入一个字符,判断该字符是小写字母、大写字母、数字或其他字符,

如题所述

为防抽，加一句中文：程序如下：
dseg segment
msglf db 0ah, 0dh, '$'
msgup db 'a big character.', 0ah, 0dh, '$'
msglo db 'a small character.', 0ah, 0dh, '$'
msgnum db 'a digit characgter.', 0ah, 0dh, '$'
msgot db 'other character.', 0ah, 0dh, '$'
dseg ends
cseg segment
assume ds:dseg, cs:cseg
begin:
mov ax, dseg
mov ds, ax
mov ah, 1
int 21h
mov bl, al
lea dx, msglf
mov ah, 9
int 21h
mov al, bl
cmp al, '0'
jl OtherC
cmp al, '9'
jg NotNum
lea dx, msgnum
jmp Output
NotNum:
cmp al, 'A'
jl OtherC
cmp al, 'Z'
jg NotUp
lea dx, msgup
jmp Output
NotUp:
cmp al, 'a'
jl OtherC
cmp al, 'z'
jg OtherC
lea dx, msglo
jmp Output
OtherC:
lea dx, msgot
Output:
mov ah, 9
int 21h
mov ah, 4ch
int 21h
cseg ends
end begin

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