assume cs:code
data segment
db "ZouZeBin is a handsome boy!!",0
data ends
code segment
start:
mov ax,data
mov ds,ax
mov si,0
s:
mov al,[si]
cmp al,0
je ok
cmp al,'A'
jb next
cmp al,'z'
ja next
cmp al,'Z'
ja ltoh
or byte ptr [si],00100000b
jmp short next
ltoh:
and byte ptr [si],11011111b
next:
inc si
jmp short s
ok:
mov ax,4c00h
int 21h
code ends
end start
截图:
接下来实现一种用子程序来解决的方法:
assume cs:code
data segment
db "ZouZeBin is a handsome boy!!",0
data ends
code segm