Assembly Code (28th Sept.)

.MODEL SMALL
.STACK 100H
.CODE
.DATA
MSG1 DB 'Enter:$'

MAIN PROC


    MOV AX,@DATA
    MOV DS,AX
    LEA DX,MSG1
    MOV AH,9
    INT 21H


                      ;INPUT
    MOV AH,1
    INT 21H
    MOV BL,AL


    COMMENT @
    ;ADDITION
    MOV AL,BL
    ADD AL,5          ;AL=AL+5
    MOV BL,AL
    @


    COMMENT @
    SUBTRACTION
    MOV AL,BL
    SUB AL,1          ;AL=AL-1
    MOV BL,AL
    @

                      ;OUTPUT
    MOV AH,2
                      ;FOR NEW LINE AND CRET
    MOV DL,0DH
    INT 21H
    MOV DL,0AH


                      ;FOR emoji
    MOV DL,015
    INT 21H
    MOV DL,BL
    INT 21H

                      ;CLEAR SCREEN
    EXIT:
    MOV AH,4CH
    INT 21H

MAIN ENDP
END MAIN