[汇编] 将字符串里的一个'&'字符换成空格

 

; multi-segment executable file template.

data segment
    ; add your data here!
    pkey db "press any key...$"  
    STRING  DB  'The date is FEB&03$'
ends

stack segment
    dw   128  dup(0)
ends

code segment
start:
; set segment registers:
    mov ax, data
    mov ds, ax
    mov es, ax

    ; add your code here
    mov cx,19
    mov si,-1
    mov al,'&'
    
    NEXT:
        inc si
        cmp al,STRING[si]
        loopne NEXT
        je  FOUND
    FOUND:
        mov STRING[si],20H
                
    lea dx, STRING
    mov ah, 9
    int 21h        ; output string at ds:dx
    
    ; wait for any key....    
    mov ah, 1
    int 21h
    
    mov ax, 4c00h ; exit to operating system.
    int 21h    
ends

end start ; set entry point and stop the assembler.