how to print 10 in decimal in assembly language
.MODEL SMALL
.STACK 100H
.DATA
NUM DW ?
lbk db 13,10,'$' ;LINE BREAK.
numstr db '$$$$$' ;STRING FOR 4 DIGITS.
.CODE
MAIN PROC
MOV AX,@DATA
MOV DS,AX
MOV NUM, 0 ;FIRST NUMBER.
START:
CMP NUM, 100 ;IF NUM <= 100...
JBE PRINT ;...DISPLAY NUM.
JMP END_
PRINT:
; MOV AH,2 ;THIS CODE
; MOV DL,NUM ;DISPLAYS
; INT 21H ;ONE CHAR ONLY.
;CONVERT NUMBER TO STRING.
mov si, offset numstr
mov ax, num
call number2string ;RETURNS NUMSTR.
;DISPLAY STRING.
mov ah, 9
mov dx, offset numstr
int 21h
;DISPLAY LINE BREAK.
mov ah, 9
mov dx, offset lbk
int 21h
INC NUM ;NUM++.
JMP START
END_:
MOV Ax,4C00H
int 21h
MAIN ENDP
;------------------------------------------
;CONVERT A NUMBER IN STRING.
;ALGORITHM : EXTRACT DIGITS ONE BY ONE, STORE
;THEM IN STACK, THEN EXTRACT THEM IN REVERSE
;ORDER TO CONSTRUCT STRING (STR).
;PARAMETERS : AX = NUMBER TO CONVERT.
; SI = POINTING WHERE TO STORE STRING.
number2string proc
call dollars ;FILL STRING WITH $.
mov bx, 10 ;DIGITS ARE EXTRACTED DIVIDING BY 10.
mov cx, 0 ;COUNTER FOR EXTRACTED DIGITS.
cycle1:
mov dx, 0 ;NECESSARY TO DIVIDE BY BX.
div bx ;DX:AX / 10 = AX:QUOTIENT DX:REMAINDER.
push dx ;PRESERVE DIGIT EXTRACTED FOR LATER.
inc cx ;INCREASE COUNTER FOR EVERY DIGIT EXTRACTED.
cmp ax, 0 ;IF NUMBER IS
jne cycle1 ;NOT ZERO, LOOP.
;NOW RETRIEVE PUSHED DIGITS.
cycle2:
pop dx
add dl, 48 ;CONVERT DIGIT TO CHARACTER.
mov [ si ], dl
inc si
loop cycle2
ret
number2string endp
;------------------------------------------
;FILLS VARIABLE WITH '$'.
;USED BEFORE CONVERT NUMBERS TO STRING, BECAUSE
;THE STRING WILL BE DISPLAYED.
;PARAMETER : SI = POINTING TO STRING TO FILL.
proc dollars
mov cx, 5
mov di, offset numstr
dollars_loop:
mov bl, '$'
mov [ di ], bl
inc di
loop dollars_loop
ret
endp
;------------------------------------------
END MAIN