ASSEMBLY CODE OF ADDITION THEN SUBTRACTION

 .MODEL SMALL
.STACK 100H

.DATA
MSG1 DB 10,13, 'ENTER VALUE 1: $'
MSG2 DB 10,13, 'ENTER VALUE 2: $'
MSG3 DB 10,13, 'SUM OF TWO : $'
MSG5 DB 10,13, 'SUB OF TWO : $'
MSG4 DB 10,13, 'ENTER VALUE 3: $'

.CODE
MAIN PROC

MOV AX,@DATA
MOV DS,AX

LEA DX,MSG1       ; Display MSG1
MOV AH,9
INT 21H


MOV AH,1
INT 21H           ; Taking 1st Input
MOV BL,AL


LEA DX,MSG2
MOV AH,9          ; Display MSG2
INT 21H


MOV AH,1          ; Taking 2nd Input
INT 21H
MOV CL,AL


ADD BL,CL         ; ADDITION


LEA DX,MSG3       ;DISPLAY MSG3
MOV AH,9
INT 21H


MOV AH,2          ; OUTPUT
SUB BL,48
MOV DL,BL
INT 21H


LEA DX,MSG4       ; Display MSG4
MOV AH,9
INT 21H


MOV AH,1
INT 21H           ; Taking 3rd Input
MOV CL,AL


SUB BL,CL         ; SUBTRACTION


LEA DX,MSG5       ;DISPLAY MSG5
MOV AH,9
INT 21H


MOV AH,2          ; OUTPUT
ADD BL,48
MOV DL,BL
INT 21H


MAIN ENDP
END MAIN