用汇编写个输出杨辉三角的程序练手

#include <stdio.h>
int c(x,y);
main()
{
int i,j,n=13;
printf("N=");
while(n>12)
scanf("%d",&n);
for(i=0;i<=n;i++)
{
for(j=0;j<12-i;j++)
printf(" ");
for(j=1;j<i+2;j++)
printf("%d ",c(i,j));
printf("\n");
}
}

int c(x,y)
int x,y;
{
int z;
if((y==1)||(y==x+1))return(1);
z=c(x-1,y-1)+c(x-1,y);

return(z);
}

;MASMPlus 代码模板 - 控制台程序

.386
.model flat, stdcall
option casemap :none

include windows.inc
include user32.inc
include kernel32.inc
include masm32.inc
include gdi32.inc
include libc.inc

includelib gdi32.lib
includelib user32.lib
includelib kernel32.lib
includelib masm32.lib
includelib msvcrt.lib
include macro.asm
.data
    dwLine dd 0
    
    
.data?
    buffer    db MAX_PATH dup(?)
    
.CODE

;用递归实现
_func proc uses ebx esi edi paramX:DWORD,paramY:DWORD
;这里按api的习惯保护了 ebx esi edi 下面可以尽情破坏数据了 呵呵
    mov eax,paramY
    mov ecx,paramX
    ;int 3h
    inc ecx
    .if (eax==1) || (eax==ecx)
        xor eax,eax
        inc eax
        ret
    .endif
    dec eax
    dec ecx
    dec ecx
    ; z=c(x-1,y-1)+c(x-1,y);
    invoke _func,ecx,eax
    mov ebx,eax
    mov eax,paramY
    mov ecx,paramX    ;数据变了~~
    dec ecx
    invoke _func,ecx,eax
    add eax,ebx
    ret
_func endp

START:

    invoke scanf,CTXT('%d'),offset dwLine ;直接用c的函数吧 呵呵
    xor ecx,ecx ;ecx=i
    .while ecx < dwLine
        mov esi,ecx    ;保护ecx
        neg ecx
        add ecx,dwLine
        ;输出空格 注意对ecx保护
        @@:
        jecxz @next
        push ecx
        invoke printf,CTXT(' ')
        pop ecx
        dec ecx
        jmp @B
        
        @next:
        mov ecx,esi
        mov edi,esi    ;保护ecx
        inc esi
        inc esi ;esi=i+2
        xor ebx,ebx
        inc ebx
        
        ;for(j=1;j<i+2;j++) printf("%d",c(i,j));
        ;j=ebx
        .while ebx < esi
            push ecx
            invoke _func,ecx,ebx
            invoke printf,CTXT('%d '),eax
            pop ecx
            inc ebx
        .endw
        invoke StdOut,CTXT(0dh,0ah)
        mov ecx,edi
        inc ecx
    .endw
    ;暂停显示,回车键关闭
    invoke StdIn,addr buffer,sizeof buffer
    invoke ExitProcess,0

end START