(A+B)-C COA LAB

.MODEL SMALL
.STACK 100H
.DATA
M1 DB 'ENTER 1ST : $'
M2 DB 'ENTER 2ND : $'
M3 DB 'ENTER 3RD : $'
M4 DB 'CALCULATION : $'
.CODE
MAIN PROC
    MOV AX,@DATA
    MOV DS,AX

    LEA DX,M1
    MOV AH,9
    INT 21H

    MOV AH,1
    INT 21H
    MOV BL,AL


    MOV AH,2
    MOV DL,0DH
    INT 21H
    MOV DL,0AH
    INT 21H

      LEA DX,M2
    MOV AH,9
    INT 21H

    MOV AH,1
    INT 21H
    MOV CL,AL


    MOV AH,2
    MOV DL,0DH
    INT 21H
    MOV DL,0AH
    INT 21H

      LEA DX,M3
    MOV AH,9
    INT 21H

    MOV AH,1
    INT 21H
    MOV BH,AL


    MOV AH,2
    MOV DL,0DH
    INT 21H
    MOV DL,0AH
    INT 21H


      LEA DX,M4
    MOV AH,9
    INT 21H

    MOV AH,2

    ADD CL,BL
    SUB CL,BH
    MOV BL,CL
    ADD BL,30H
    SUB BL,30H
    MOV DL,BL
    INT 21H


    MOV AH,4CH
    INT 21H
    MAIN ENDP
END MAIN    END MAIN