汇编语言编写杨辉三角
时间: 2023-07-11 07:10:50 浏览: 125
好的,以下是汇编语言编写杨辉三角的示例代码:
```
section .data
row db 10 ; 杨辉三角的行数
space db " ", 0
newline db 10, 0
section .text
global _start
_start:
mov ecx, row ; 初始化行数
mov ebx, 0 ; 初始化列数
mov edx, 1 ; 初始化值
outerloop:
; 输出空格
mov eax, 4
mov ebx, 1
mov ecx, space
mov edx, 1
int 0x80
innerloop:
; 输出当前值
mov eax, 4
mov ebx, 1
mov ecx, edx
mov edx, 1
int 0x80
; 计算下一个值
mov eax, edx
add eax, ebx
mov ebx, edx
mov edx, eax
; 判断是否到达行末尾
cmp ebx, ecx
jle innerloop
; 输出换行符
mov eax, 4
mov ebx, 1
mov ecx, newline
mov edx, 1
int 0x80
; 减少行数
dec ecx
; 判断是否到达最后一行
cmp ecx, 0
jg outerloop
; 退出程序
mov eax, 1
xor ebx, ebx
int 0x80
```
这段代码使用了两个循环,外层循环控制行数,内层循环控制列数和计算当前值。每次循环时,先输出一个空格,再输出当前值,最后输出一个换行符。当到达行末尾时,内层循环结束,继续执行外层循环。当到达最后一行时,程序退出。
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