INCLUDE Irvine32.inc
.data
    var1 DWORD ?
    var2 DWORD ?

    input_prompt BYTE "Please input two integers: ", 0
    result_str1 BYTE "Var1 is greater than var2", 0
    result_str2 BYTE "Var2 is greater than var1", 0

    result_str3 BYTE "Var1 is greater than 10", 0
    result_str4 BYTE "Var1 is less than 10", 0



.code

lengthOfString PROC USES EDX EBX, string:DWORD      ; Specifies EDX and EBX as modified registers. INVOKE will save these values on the stack. Also creates a parameter referred to as 'string'
    LOCAL string_count:DWORD                        ; Creates a local variable 'string_count' on the stack
    MOV string_count, 0
    MOV EDX, string
    MOV BL, [EDX]
    .WHILE BL != 0                                  ; Iterate until we hit null terminator
        INC string_count
        INC EDX
        MOV BL, [EDX]
    .ENDW

    MOV EAX, string_count                           ; Return value placed in EAX
    RET
lengthOfString ENDP

main PROC
    MOV EDX, OFFSET input_prompt
    CALL WriteString
    CALL Crlf


    CALL ReadInt
    MOV var1, EAX
    CALL ReadInt
    MOV var2, EAX

    MOV EAX, var1
    MOV EBX, var2

    .IF EAX > EBX
        MOV EDX, OFFSET result_str1
    .ELSE
        MOV EDX, OFFSET result_str2
    .ENDIF

    CALL WriteString
    CALL Crlf

    .IF var1 > 10
        MOV EDX, OFFSET result_str3
    .ELSE
        MOV EDX, OFFSET result_str4
    .ENDIF

    CALL WriteString
    CALL Crlf

    ;.IF var1 > var2    ; ERROR! Cannot compare two memory locations

    ;.ELSE

    ;.ENDIF

    INVOKE lengthOfString, ADDR input_prompt    ; Calls the lengthOfString procedure and passes the address of input_prompt
    CALL WriteDec
    CALL Crlf

    CALL WaitMsg
    INVOKE ExitProcess, 0
main ENDP

end main