用汇编语言实现求100以内的素数。要求:用筛法求出这些素数 已知我可以运行这段代码 include io32.inc .data msg byte 'Hello,Assembly!',13,10,0 .code start: mov eax,offset msg call dispmsg exit 0 end start 根据我的环境来编写
时间: 2024-03-10 20:43:38 浏览: 121
汇编语言求100 以内的素数
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好的,以下是汇编语言实现求100以内素数的代码,使用的是埃拉托色尼筛法:
```assembly
include io32.inc
.data
msg byte 'The prime numbers less than 100 are:', 13, 10, 0
prime db 100 dup(0)
count db 0
.code
start:
; initialize prime to all 1's
mov ecx, 100
mov edi, offset prime
mov al, 1
rep stosb
; set up the outer loop
mov ecx, 10
mov ebx, 2
outer_loop:
; set up the inner loop
mov edx, ebx
add edx, ebx
inner_loop:
; mark multiples of ebx as composite
mov eax, edx
mov edi, offset prime
xor edx, edx
div ebx
add edi, eax
mov al, 0
mov [edi], al
add edx, ebx
cmp edx, 100
jb inner_loop
; find the next prime number
mov edi, offset prime
mov al, [edi + ebx + 1]
cmp al, 0
jne next_prime
inc ebx
jmp outer_loop
next_prime:
; output the current prime number
mov eax, ebx
call writedec
mov al, ','
call writechar
inc count
cmp count, 10
jne continue
; output a newline every 10 numbers
mov al, 13
call writechar
mov al, 10
call writechar
mov count, 0
continue:
; check if we've found all primes less than 100
cmp ebx, 10
jl outer_loop
; output a newline at the end of the list
mov al, 13
call writechar
mov al, 10
call writechar
; display a message to indicate the program has finished
mov eax, offset msg
call dispmsg
exit
end start
```
代码运行后会输出100以内的所有素数,每行输出10个,最后会显示一个提示信息。
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