7-P10 Write a program in assembly to convert temperature from Celsius to Fahrenh

Question

7-P10 Write a program in assembly to convert temperature from Celsius to Fahrenheit. The formula is F = (9/5) x C + 32

I am getting the following error:

/Desktop/Lab3$ make
nasm -f win64 Lab3.s -o Lab3.o
Lab3.s:20: error: parser: instruction expected
make: *** [Lab3.o] Error 1

Here is the code I have:

%include "macros_windows64.s"

.DSEG SEGMENT 'DATA'

.DATA
CELC DB ?
FARH DB ?
MSG1 DB 'INPUT VALUE OF CENTIGRADE','$'
MSG DB 'EQUIVALENT FARHRENEHEIT IS','$'
;DSEG ENDS

CSEG SEGMENT 'CODE'
;.CODE
;STARTUP:
       ASSUME CS:CSEG, DS:DSEG
       MOV AX,DSEG
       MOV DS,AX ; INITIALIZE DATA SEGMENT
       LEA DX,MSG1
       MOV AH, 01H
      
       INT 21H ; DISPLAY "INPUT VALUE IN CELC"
       MOV AH, 01H
      
       INT 21H ; INPUT VALUE IN CELC
       MOV CELC,AL ; MOVE THE INPUT VALUE TO 'CELC'
       MOV AL,CELC
       MOV CL,09H
       MOV CH,00H
       MUL CL ; AX=9*CELC
       MOV CL,05H

       DIV CL ; AL=AX/CL=(9*CELC)/5
       ADD AL,20H ; ADD 20H=32 TO AL TO GET FAHR
       MOV FARH, AL ; FAHR=(9*CELC)/5+32
       MOV AH,4CH
       INT 21H
;CSEG ENDS
done:
.EXIT

Explanation / Answer

there is nthing issue with the code place the code in crrect way here is the way

DSEG SEGMENT 'DATA'
CELC DB ?
FARH DB ?
MSG1 DB 'INPUT VALUE OF CENTIGRADE','$'
MSG DB 'EQUIVALENT FARHRENEHEIT IS','$'
DSEG ENDS
CSEG SEGMENT 'CODE'
ASSUME CS:CSEG, DS:DSEG
MOV AX,DSEG
MOV DS,AX ; INITIALIZE DATA SEGMENT
LEA DX,MSG1
MOV AH, 01H
INT 21H ; DISPLAY "INPUT VALUE IN CELC"
MOV AH, 01H
INT 21H ; INPUT VALUE IN CELC
MOV CELC,AL ; MOVE THE INPUT VALUE TO 'CELC'
MOV AL,CELC
MOV CL,09H
MOV CH,00H
MUL CL ; AX=9*CELC
MOV CL,05H ;
DIV CL ; AL=AX/CL=(9*CELC)/5
ADD AL,20H ; ADD 20H=32 TO AL TO GET FAHR
MOV FARH, AL ; FAHR=(9*CELC)/5+32
MOV AH,4CH
INT 21H
CSEG ENDS
END

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