;nhap mot chuoi xem co khoang trang thi loai bo
.model small
.stack 100h
.data
t db 13,10,'$'
s db 10,?,11 dup ('$')
s1 db 100 dup ('$')

.code
main proc
mov ax,@data
mov ds,ax

mov ah,0ah
lea dx,s
int 21h

mov ah,02
mov dl,13
int 21h


mov si,offset s+2

mov di,offset s1

lap:

mov al,[si]
cmp al,13
je thoat
cmp al,' '
je luu
mov [di],al
inc di
inc si
jmp lap
luu:
inc si
jmp lap
thoat:
mov ah,09
mov dx,offset t
int 21h
mov dx,offset s1
int 21h

mov ah,4ch
int 21h
main endp
end main