阿杜的世界

摘要： ;Ex502dseg segmentMsg1 db 'Input a lowercase letter:$'Msg2 db 0dh,0ah,'Uppercase letter is:'Result db ? db '$'dseg endscseg segment assume cs:cseg,ds:dsegStart: mov ax,dseg mov ds,ax lea dx,Msg1 mov ah,09h int 21h mov ah,1 int 21h cmp al,'a' jb Exit cmp al,'z' 阅读全文