汇编语言-整型处理，利用堆栈原样输出

要求：输入任意一个整型数字字符串，并将整型原样输出。

这个子程序主要用于格式化排版，比output直接输出字符串有很大美观性。

 1 ; Example assembly language program --

 2 ; Author: Karllne

 3 ; Date:    revised 05/2014

 4 

 5 .386

 6 .MODEL FLAT

 7 

 8 ExitProcess PROTO NEAR32 stdcall, dwExitCode:DWORD

 9 

10 INCLUDE io.h            ; header file for input/output

11 

12 cr      EQU     0dh     ; carriage return character

13 Lf      EQU     0ah     ; line feed

14 

15 .STACK  4096            ; reserve 4096-byte stack

16         

17        

18         

19 .DATA                   ; reserve storage for data

20 

21         prompt  BYTE  "Please enter a number",cr,Lf,0

22         fl      DWORD ?

23         value   BYTE 11 DUP(?),0

24         char    BYTE 1 DUP(?)

25         

26 PUBLIC _start        

27 .CODE                           ; start of main program code

28 _start:

29         output prompt

30         input  value,11

31         atod   value

32         push eax

33         call byteInput

34         add  esp,4

35         

36         INVOKE  ExitProcess, 0  ; exit with return code 0

37  

38 byteInput PROC NEAR32

39           push ebp

40           mov  ebp,esp

41           

42           mov  fl,0

43           mov  ebx,10

44           mov  eax,[ebp+8]

45           doWh:

46               cdq

47               idiv ebx

48               push edx

49               inc fl

50               cmp eax,0

51               je  enddoWh

52               

53              

54               jmp doWh

55           enddoWh: 

56           

57           doPrint:

58                  

59                  cmp fl,0

60                  je  enddoPrint

61                  dec fl

62                  pop edx 

63                  mov char,dl

64                  add char,'0'

65                  output char

66                  jmp doPrint

67           enddoPrint:

68           pop ebp

69           ret

70           

71 byteInput ENDP

72 

73 END                             ; end of source code

测试结果：