是实现简单的if功能.发现就是编译不过提示下面出错
;............
i  =  0
k  =  1
Labeling         macro              top
                 label&top&:
                 endm                  ;which serves as the producer of label

Connect          macro              x1,x2,x3,x4

                 &x1&x2             &x4&x4
                 
                 endm

iff              macro              x1,op,x2
               
                 mov                bx,   x1
                 cmp                bx,   x2
                 i  =   i  +  2
             
                 k  =   k  +  2
                 Connect            j,op,label,%i
  
                 Connect            j,mp,label,%k ;jmp labelk无法找到但是我有
                                                  ;写啊
                 Labeling           %i
                 endm

ifend            macro
                 Labeling           %k
                 endm

iniz             macro
                 mov                 ax,       @data
                 mov                 ds,       ax
                 mov                 es,       ax
                 endm

Disp             macro               msg
                 mov                 ah,       09h
                 lea                 dx,       msg
                 int                 21h
                 endm

finish           macro
                 mov                 ax,4c00h
                 int                 21h
                 endm
                 
.model small
.data

     num1         dw                 ?
     num2         dw                 ?
     string1      db                 0ah, 0dh,'is greater!','$'
     string2      db                 0ah, 0dh,'is smaller','$'
.code

start:

main             proc               far
                 iniz
                 mov                num1,         16
                 mov                num2,         20

                 mov                bx,         0
               
                 iff                num1,l,num2
                 Disp               string2
                 ifend
                
                 finish
main endp
                 end start