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Blogtrottr

Yahoo!奇摩知識+ - 分類問答 - 電腦網路 - 發問中

Apr 18th 2013, 20:44

我要寫一個輸入兩整數讓其能夠相減的組合語言程式，但是再命令提示字元下執行卻出現一大堆亂碼，請大大告訴我哪裡寫錯了。
TITLE Integer Subtraction Program (Sub2.asm)

; This program prompts the user for three integers,
; stores them in an array, calculates the sub of the
; array, and displays the sub.

INCLUDE Irvine16.inc

INTEGER_COUNT = 3

.data
str1 BYTE "Enter a signed integer: ",0
str2 BYTE "The sub of the integers is: ",0
array DWORD INTEGER_COUNT DUP(?)

.code
main PROC
callClrscr
movesi,OFFSET array
movecx,INTEGER_COUNT
callPromptForIntegers
callArraySub
callDisplaySub
exit
main ENDP

;-----------------------------------------------------
PromptForIntegers PROC USES ecx edx esi
;
; Prompts the user for an arbitrary number of integers
; and inserts the integers into an array.
; Receives: ESI points to the array, ECX = array size
; Returns: nothing
;-----------------------------------------------------
movedx,OFFSET str1; "Enter a signed integer"

L1:callWriteString; display string
callReadInt; read integer into EAX
callCrlf; go to next output line
mov[esi],eax; store in array
subesi,TYPE DWORD; next integer
loopL1

ret
PromptForIntegers ENDP

;-----------------------------------------------------
Arraysub PROC USES esi ecx
;
; Calculates the sub of an array of 32-bit integers.
; Receives: ESI points to the array, ECX = number
; of array elements
; Returns: EAX = sub of the array elements
;-----------------------------------------------------
moveax,0; set the sub to zero
L1:subeax,[esi]; add each integer to sub
subesi,TYPE DWORD; point to next integer
loopL1; repeat for array size
ret; sub is in EAX
ArraySub ENDP

;-----------------------------------------------------
Displaysub PROC USES edx
;
; Displays the sub on the screen
; Receives: EAX = the sub
; Returns: nothing
;-----------------------------------------------------
movedx,OFFSET str2; "The sub of the..."
callWriteString
callWriteInt; display EAX
callCrlf
ret
DisplaySub ENDP
END main

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