Grade System

include 'EMU8086.INC'
.model small
.stack 100h
.data
; Initialize the data sagement variable
N DW ?
M DW ?
i DW ?
SUM DW ?

.code

main proc
    ; Initialize the data sagement
    MOV AX,@DATA
    MOV DS,AX

    ; Input block
    INPUT:
        MOV N,0
        MOV i,1
        MOV SUM,0
        MOV M,10
        print "Enter an number: "
        MOV AH,1

    ; Continuously take input until user press enter
    WHILE:
        INT 21H
        CMP AL,0DH
        JE INVALID
        SUB AL,48
        MOV BL,AL
        MOV AX,N
        IMUL M
        MOV DX,AX
        MOV AL,BL
        AND AX,000FH
        ADD DX,AX
        MOV N,DX
        MOV AH,1
        JMP WHILE

    ; After press enter check is input number is greater then 0 or not
    ; if greater then 0 then go to the calculation block otherwise go to the end of the program block
    INVALID:
        CMP N,0
        JGE CALC
        JMP ENDJ

CALC:

    MOV AX,N
    printn ""

    MODARATE_CONDITION:
        cmp N, 50  ; Compare with 50
        jl END_IF   ; Because there is no condition for less than 50 on assignment so we jump to the end if
        jge MODARATE_REGULAR_CONDITION   ; If grade is greater or equal compre to 50 then jump to the modarate section to check with 100

    MODARATE_REGULAR_CONDITION:
        cmp N, 100 ; Compare with 100
        jl  OUTPUT_MODARATE ; If grade is less then 100 then jump to the modarate output
        jge REGULAR_HEAVY_CONDITION  ; If grade is grater or equal compare to 100 then jump to the regular heavy section to check with 150

    REGULAR_HEAVY_CONDITION:
        cmp N, 150
        jl  OUTPUT_REGULAR ; If grade is less then 150 then jump to the regular output
        jge HEAVY_INDUSTRY_CONDITION   ; If grade is grater or equal compare to 150 then jump to the heavy industry section to check with 200

    HEAVY_INDUSTRY_CONDITION:
        cmp N, 200
        jl  OUTPUT_HEAVY   ; If grade is less then 200 then jump to the heavy output
        jge OUTPUT_INDUSTRY ; If grade is grater or equal compare to 200 then jump to the heavy output


    ; Show modarate Output
    OUTPUT_MODARATE:
        printn "Modarate"
        jmp END_IF

    ; Show regular Output
    OUTPUT_REGULAR:
        printn "Regular"
        jmp END_IF

    ; Show Heavy Output
    OUTPUT_HEAVY:
        printn "Heavy"
        jmp END_IF

    ; Show Industry Output
    OUTPUT_INDUSTRY:
        printn "Industry"
        jmp END_IF


    ; Shutdown the executation block from if condition
    END_IF:
        mov ax,4ch
        int 21h

; End of the program
ENDJ:
main endp
end main