如何用匯編語言打印框大綱

請我是新的彙編語言，我正在嘗試打印一個框的大綱。我很困難。嘗試瞭解我所知道的一切，但我無法打印出輪廓。預先感謝您的幫助如何用匯編語言打印框大綱

INCLUDE Irvine32.inc 

    .data 
    prompt BYTE "This program draws a rectangle using the * character.", 0 
    len BYTE "How high would you like your box? ", 0 
    wid BYTE "How wide would you like your box?: ", 0 
    image BYTE "* ", 0 
    space BYTE " ", 0 
    leninput DWORD ? 
    widinput DWORD ? 
    h DWORD ? 
    w DWORD ? 
    count DWORD ? 


    .code 
    main proc 

    ;;; Write the prompt to the screen 
    mov edx, OFFSET prompt 
    call WriteString 
    call Crlf 

    ;;; Write the length request to the screen 
    mov edx, OFFSET len 
    call Crlf 
    call WriteString 


    ;;; Obtain the length value(which will be in eax) 
    call ReadDec 
    mov leninput, eax 

    ;;; Write the width request to the screen 
    mov edx, OFFSET wid 
    call Crlf 
    call WriteString 


    ;;; Obtain the second value(which will be in eax) 
    call ReadDec 
    mov widinput, eax 


    ;;; Draw rectangle on screen 
    mov eax, 0 
    mov ecx, leninput; set outer loop with length 


    L1 : 
    mov count, ecx; save outer loop count 
    mov ecx, widinput; set inner loop count with the width 

    L2 : 
    call ConditionCheck 

    loop L2; repeat the inner loop 
    call Crlf; Print line 
     mov ecx, count; restore outer loop(length) 
    loop L1; repeat outer loop 1 

    exit 
main endp 
; ---------------------------------------------------------------------- 
ConditionCheck PROC 
mov eax, leninput 
mov ebx, widinput 

.IF eax == 1 
mov edx, OFFSET image 
call WriteString 
.ELSEIF eax == leninput 
mov edx, OFFSET image 
call WriteString 
.ELSEIF ebx == 1 
mov edx, OFFSET image 
call WriteString 
.ELSEIF ebx == widinput 
mov edx, OFFSET image 
call WriteString 
.ELSE 
mov edx, OFFSET space 
call WriteString 
.ENDIF 
ret 
ConditionCheck ENDP 
; ---------------------------------------------------------------------- - 

end main

輸出應該是這樣的：

How high would you like your box? 5 
How wide would you like your box? 6 
****** 
* * 
* * 
* * 
******

，但我有填充，而不是

來源

2017-03-17 Delalixx

啊.. MASM宏或指令，或者是什麼'.IF'是......那一定是不方便調試，看不清真正的指令。順便說一句，你是否考慮過會發生什麼，如果你願意'leninput - = 2;'，總是輸出一個完整的行，然後用'inner'行執行'leninput'循環，並且循環結束後再輸出一個完整行？（但是，你可能應該對輸入進行清理以確認它是3+），同樣的，在'widinput - = 2;'處理後，內部代碼可能會更簡單。 – Ped7g

image和space箱應該有相同的字符數量：

image BYTE "* ", 0 
space BYTE " ", 0

在程序ConditionCheckEAX和EBX指的是當前環而不是的值到不可更改的值leninput和widinput。因此，改變

mov eax, leninput 
mov ebx, widinput

到

mov eax, count 
mov ebx, ecx

來源

2017-03-17 10:52:46 rkhb

如何用匯編語言打印框大綱

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