assume cs:code
data segment
var equ 9
data ends
code segment
start: mov ax,data
mov ds,ax
mov cx,var
mov bl,3
mov si,0
mov ax,1
call di_gui
mov ax,4c00h
int 21h
di_gui proc
cmp cx,3
jna s1
dec cx
call di_gui
s1: xchg ax,si
mul bl
add ax,si
ret
di_gui endp
cod...
[2011-02-11 17:46] 子程序的递归。设a1=0,a2=1,当N>=3时，an=a(n-1)+3*a(n-2)
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