在8086环境中汇编用递归实现斐波那契数列并显示每一项的数值
时间: 2024-02-12 07:03:08 浏览: 116
c语言 递归方法来计算斐波那契数列
好的,下面是汇编代码实现斐波那契数列的递归算法,并显示每一项的值:
```
.model small
.stack 100h
.data
msg db "Fibonacci sequence up to 10 terms:$"
term db "Term ", 0
value db "Value = ", 0
.code
main proc
mov ax, @data
mov ds, ax
; Display message
mov ah, 9
lea dx, msg
int 21h
; Calculate and display Fibonacci sequence up to 10 terms
mov cx, 10 ; Number of terms
mov bx, 0 ; First term
mov dx, 1 ; Second term
mov si, 2 ; Current term count
; Display first term
mov ah, 9
lea dx, term
int 21h
mov ah, 2
mov dl, bl
int 21h
mov dl, 0dh
int 21h
mov dl, 0ah
int 21h
; Display second term
mov ah, 9
lea dx, term
int 21h
mov ah, 2
mov dl, dl
int 21h
mov dl, 0dh
int 21h
mov dl, 0ah
int 21h
; Calculate and display remaining terms
mov ah, 9
lea dx, term
int 21h
call fibonacci
jmp exit
fibonacci proc
push bp
mov bp, sp
sub sp, 2 ; Make room for return address
; Get current term count
mov ax, si
; Check if all terms have been calculated
cmp ax, cx
jge done
; Calculate next term
mov ax, bx
add ax, dx
mov bx, dx
mov dx, ax
; Display current term
mov ah, 9
lea dx, term
int 21h
mov ah, 2
mov dl, al
int 21h
mov dl, 0dh
int 21h
mov dl, 0ah
int 21h
; Increment current term count
inc si
; Call fibonacci recursively
call fibonacci
done:
; Clean up stack and return
add sp, 2
pop bp
ret
fibonacci endp
exit:
; Display newline and exit program
mov dl, 0dh
int 21h
mov dl, 0ah
int 21h
mov ah, 4ch
int 21h
main endp
end main
```
以上代码使用 `bx` 和 `dx` 寄存器来存储斐波那契数列中的前两项,使用 `si` 寄存器来跟踪当前项的数量,并使用递归算法来计算并显示每一项的值。请注意,这个代码只计算并显示斐波那契数列的前10项,如果需要更多的项,需要修改 `cx` 和 `msg` 中的值。
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