第1个回答 2015-11-24
code segment
assume cs:code
org 100h
start:
jmp bbb
str1 db 250 dup(' ')
num db ?
char db ' ','$'
msg1 db 10,13,'please input string:','$'
lfcr db 10,13,'$'
bbb:
push cs
pop ds
lea dx,msg1
mov ah,9
int 21h
MOV cx,0
lea di,str1
again1:
mov ah,1
int 21h
cmp al,13
je line1
mov byte ptr[di],al
inc cx
inc di
jmp again1
line1:
mov byte ptr[num],cl
lea si,str1
dec cx
mov al,byte ptr[si]
again2:
inc si
cmp al,byte ptr[si]
jge line2
mov al,byte ptr[si]
line2:
loop again2
mov byte ptr[char],al
lea dx,lfcr
mov ah,9
int 21h
lea dx,char
mov ah,9
int 21h
mov ah,4ch
int 21h
code ends
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