How to print an array in DOS x86 assembly? - arrays

Question

I have this code to copy the array "NUMBERS" to "DEST" such that no number will repeat (in this case it should be : 1,2,5,4,7)
The code works but now I need to print the array "DEST". How can I do that ?
data segment
NUMBERS db 1,2,1,1,1,5,5,4,7,7
DEST dt ?
data ends
code segment
assume ds:data, cs:code
start: mov ax, data
mov ds, ax
mov ax, 0a0ah
mov di, offset NUMBERS
mov bx, 0h
loop2:mov cl, [di]
mov si, offset DEST
mov ch, [si]
loop1:cmp ch, cl
je dontadd
inc si
mov ch, [si]
dec ah
jnz loop1
mov si, offset DEST
add si, bx
inc bx
mov [si], cl
dontadd:mov ah, 0ah
inc di
dec al
jnz loop2
mov ah, 4ch
int 21h
code ends
end start

Answer 1

You can use INT 21h, AH=02h to print a single character to STDOUT.
MOV CX,10
MOV SI,OFFSET DEST
print:
MOV DL,[si]
OR DL,DL
JE done
ADD DL,'0' ; <-- Convert numeric value in DL into ASCII code
MOV AH,02h
INT 21h
MOV DL,' ' ; Throw in a space to make things pretty
INT 21h
INC SI
LOOP print
done:
If elements in NUMBERS have values over 9 then you need more elaborate conversion of the numeric values into ASCII.

Answer 2

First convert numbers to string then print them.You can use this two macros for printing numbers:
printstr macro str
push ax
push dx
lea dx,str
mov ah,9
int 21h
pop dx
pop cx
endm
printnum macro n
local o,w,s,n5,lb1,lb2,lb3
pusha
push si
push di
jmp w
s db 7 dup('$')
w:
mov si,0
mov cx,7
o:mov s[si],'$'
inc si
loop o
mov si,0
xor ax,ax
mov ax,n
xor dx,dx
cmp ax,0
jge n5
mov bl,'-'
mov s[si],bl
inc si
neg ax
n5:mov cx,10
div cx
or dl,30h
mov s[si],dl
xor dx,dx
inc si
cmp ax,0
jne n5
mov si,0
cmp s[si],'-'
jne lb1
inc si
lb1:mov di,si
lb3:cmp s[si],'$'
je lb2
mov al,s[si]
push ax
inc si
jmp lb3
lb2:pop ax
mov s[di],al
inc di
cmp di,si
jl lb2
printstr s
pop di
pop si
popa
endm