汇编语言-华氏温度转换为摄氏温度

 1 ; Example assembly language program -- adds two numbers
 2 ; Author:  karllen
 3 ; Date:    revised 5/2014
 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 .DATA
18 promot1  BYTE "Please enter a number as a Fahrenheit ",cr,Lf,0
19 value    BYTE 11 DUP(?)
20 answer   BYTE "The Temperature is"
21 va       BYTE 11 DUP(?)
22          BYTE cr,Lf,0
23 
24 ;C = (5/9) * (F-32)
25 
26 .CODE
27 _start:
28        output promot1
29        input  value,11
30        atod   value
31        sub    eax,32   ;eax = F-32
32        mov    ebx,eax  ;ebx = F-32
33 
34        mov    eax,1    ;eax = eax/edx  5/9
35 
36        mul    ebx      ;eax*ebx
37         
38        dtoa   va,eax
39        output answer
40 
41         INVOKE  ExitProcess, 0  ; exit with return code 0
42 
43 PUBLIC _start                   ; make entry point public
44 
45 END                             ; end of source code