How would you go about allowing the user to enter a string of numbers, or anything longer than 1 digit?
:8)
TITLE ADD
.model small
.stack 100h
.data
add_msga db 10,13, "Enter Number 1: $"
add_msgb db 10,13, "Enter Number 2: $"
add_num1 db ?
add_num2 db ?
add_result db ?
.code
main PROC
mov ax,@data
mov ds,ax
call AddNumbers
mov ax, 4c00h
int 21h
main ENDP
AddNumbers PROC
;get num1
mov ah, 09h
mov dx, offset add_msga
int 21h
mov ah, 1h
int 21h
mov add_num1, al
;get num2
mov ah, 09h
mov dx, offset add_msgb
int 21h
mov ah, 1h
int 21h
mov add_num2, al
;add [numbers]
mov al, add_num1
add al, add_num2
mov add_res, al
;output result
mov ah, 09h
mov dx, offset add_res
int 21h
ret
AddNumbers endp
END main
If I were you, I'd have a look into the 16 bit DOS Programming Subforum (http://www.masmforum.com/simple/index.php?board=24.0). ;)
I'm pretty sure that the question has been already answered there.
Regards
EDIT:
Hell, I'm sure that in the campus was a sticky thread called "If your code contains int 21h..." :eek
jonriba,
Double posting is not any way to get help here. One post per topic is sufficient.
You can use the Buffered Keyboard Input function (interrupt 21h function 0Ah) to read a string from standard input. You will need code to convert the input strings to number values, and code to convert the result of the addition to a string that can be displayed. Try searching this forum as mnemonic suggested.