[kinco]

有 ~我改完了~一直忘了貼上來~qq~

INCLUDE Irvine32.inc

.data
prompt BYTE "Enter your name: ",0Dh,0Ah,0 ;定義對話串
MAX = 80 ;max chars to read
stringIn BYTE MAX+1 DUP (?) ;room for null

.code
main PROC		
    mov edx, OFFSET prompt  ;顯示對話
    call WriteString			  ;印出edx裡面的字串
    call crlf 						  ;空一行

		mov edx, OFFSET stringIn 
		mov ecx, MAX ;buffer size - 1 
		call ReadString
		
		mov ecx, 0
		mov esi, 0
		
		mov ecx, LENGTHOF stringIn
		mov esi, OFFSET stringIn	
L1:	   
		mov al, byte ptr[esi]
				  ;判斷是不是小寫
		BT eax, 5										
		jc L2      ;如果是小寫就跳到L2
		jmp L3									;如果不是就跳到L3
L2:
		AND byte ptr[esi], 11011111b	;小->大
		inc esi
		jmp L1
L3:
		OR byte ptr[esi], 00100000b   ;大->小
		inc esi	
next:
    loop L1
    
    call Writestring
    call Crlf  ;空一行 
    exit
main ENDP
END main