请你编写完整代码
时间: 2024-02-22 07:56:56 浏览: 17
好的,以下是8086汇编代码:
```
.model small
.stack 100h
.data
msg db 'Enter an integer between 0 and 20: $'
summsg db 'The sum of cubes from 0 to %d is %d$'
nl db 0dh, 0ah, '$'
x db ?
sum dw 0
.code
mov ax, @data
mov ds, ax
; print message and read input
mov ah, 09h
lea dx, msg
int 21h
mov ah, 01h
int 21h
sub al, '0' ; convert character to number
mov x, al
; calculate sum of cubes
xor cx, cx ; clear cx
mov ax, 0 ; clear ax
loop1:
cmp cx, x
jg done
push cx ; save cx on stack
mov bx, cx
mov ax, cx ; calculate cube of cx
mul cx
mul bx
add sum, ax ; add cube to sum
pop cx ; restore cx
inc cx ; increment cx
jmp loop1
done:
; print sum of cubes
mov ah, 09h
lea dx, nl
int 21h
mov ah, 09h
lea dx, summsg
mov di, dx
mov cx, 0 ; clear cx
mov bx, 10 ; set bx to 10
div bx ; divide dx by 10
add dl, '0' ; convert remainder to character
mov [di+1], dl ; replace %d with remainder
mov dx, cx ; move sum to dx
mov bx, 0 ; clear bx
mov cx, 0 ; clear cx
mov ax, dx ; convert sum to string
loop2:
mov bx, 10 ; set bx to 10
div bx ; divide dx by 10
add dl, '0' ; convert remainder to character
mov cx, dx ; save quotient in cx
mov dx, bx ; move remainder to dx
push dx ; push remainder onto stack
cmp cx, 0 ; check if quotient is zero
jne loop2
print:
pop dx ; pop remainder from stack
mov ah, 02h
int 21h ; print remainder
loop print ; loop until stack is empty
mov ah, 4ch
int 21h
end
```
这个程序将从键盘输入一个0到20之间的整数,计算0到输入整数的每个数的立方,并将它们相加。然后,它将显示输出的和。请注意,程序使用了一些字符串格式化和输出技巧,例如将数字转换为字符串,并将其逆序打印。
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