; This is a prgram for adding numbers.

format PE console
entry start

include 'win32a.inc'

;-----------------------------------------------------------
section '.text' code readable executable

start:
        ; Your program begins here:
        
        ; Read two numbers from the user:
        call    read_hex
        mov             edx,eax
        call    read_hex
        
        ; add the two numbers:
        add             eax,edx
        
        ; Print result to the console:
        call    print_eax
        
        ; Exit the process:
        push    0
        call    [Exitprocess]    

start:
  ;...

read_hex:
  ;fill in your code here

print_hex:
  ;fill in your code here

.end ; <--- allow the windows macros to close off the file    

format pe gui                                           ; executable type and subsystem
include 'win32a.inc'                                    ; useful macros, that what makes an all in one section
; note that win32 for 32-bit programs and 'a' for ascii/ansi


                        ; using win32a.inc, we can omit the API variant (a,w) ..
        invoke          MessageBox,0,_construct,_flat,0 ; library function
        ret



_flat db '.flat section have code and data resides in it',0
_construct db 'although fasm create a .flat section for both code and data',0Dh,0Ah,'but you must construct the import table',0

data import                         ; begin of import table

        library user32,'user32.dll' ; MessageBoxA resides here
        include 'api\user32.inc'    ; the include file that have all library functions

end data                            ; end of import table