num_piramid

mov bx,5 ;the height of piramid
mov cx,0

outloop:
 inloop:
    mov ah,2
    mov dx,bx
    add dx,48
    int 21h
    add cx,1
    cmp bx,cx
    jne inloop


    ;newline
    MOV dl, 10
    MOV ah, 02h
    INT 21h
    MOV dl, 13
    MOV ah, 02h
    INT 21h

     sub bx,1
     mov cx,0
     cmp bx,0

jne outloop