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Help with user input and variables

Wed, 23 Oct 2002 07:35:16 -0700

Hello, I need little help for my assignment, please.
I need to get input from user, and assign it to a variable for calculations later on in program.

this is a sample of what i got

.data
first_number db ?
message1 db "Enter number",0

main proc

mov dx, offset message1
call writestring
call Readint
*

*this is where I need to assign the users input into first_number
(I will be multipling two numbers together later on)

Please Help
Tanks alot
Frank

Re: Help with user input and variables

Wed, 23 Oct 2002 11:44:34 -0700

:
: .data
: first_number db ?
: message1 db "Enter number",0
:
: main proc
:
: mov dx, offset message1
: call writestring
: call Readint
: *
:
: *this is where I need to assign the users input into first_number
: (I will be multipling two numbers together later on)
:

- I think there is something unclear in your question.
Do you have the code for "Readint" procedure?
or do you ask us to write it for you?

if it's the first case you maybe interested in message here:
http://www.programmersheaven.com/c/MsgBoard/read.asp?Board=1&MsgID=14760 4&Setting=A9999F0001

Re: Help with user input and variables

Wed, 23 Oct 2002 12:05:55 -0700

: :
: : .data
: : first_number db ?
: : message1 db "Enter number",0
: :
: : main proc
: :
: : mov dx, offset message1
: : call writestring
: : call Readint
: : *
: :
: : *this is where I need to assign the users input into first_number
: : (I will be multipling two numbers together later on)
: :
:
:
: - I think there is something unclear in your question.
: Do you have the code for "Readint" procedure?
: or do you ask us to write it for you?

everything is there (all procedures), it's just that I get an error when
I try to multiply the first_number by the second_number. The error is "constant expression expected". What I want to know is, how do I put the users input (number) into the variable First_Number.

I tried mov first_number, ax (I believe that the input is put into ax) but I still get an error.

Thanks
Frank

:
: if it's the first case you maybe interested in message here:
: http://www.programmersheaven.com/c/MsgBoard/read.asp?Board=1&MsgID=14760 4&Setting=A9999F0001
:
:
:

Re: Help with user input and variables

Thu, 24 Oct 2002 12:10:17 -0700

Just let me see your entire code, this would help
me to figure out the problem.

: : :
: : : .data
: : : first_number db ?
: : : message1 db "Enter number",0
: : :
: : : main proc
: : :
: : : mov dx, offset message1
: : : call writestring
: : : call Readint
: : : *
: : :
: : : *this is where I need to assign the users input into first_number
: : : (I will be multipling two numbers together later on)
: : :
: :
: :
: : - I think there is something unclear in your question.
: : Do you have the code for "Readint" procedure?
: : or do you ask us to write it for you?
:
: everything is there (all procedures), it's just that I get an error when
: I try to multiply the first_number by the second_number. The error is "constant expression expected". What I want to know is, how do I put the users input (number) into the variable First_Number.
:
: I tried mov first_number, ax (I believe that the input is put into ax) but I still get an error.
:
: Thanks
: Frank
:
: :
: : if it's the first case you maybe interested in message here:
: : http://www.programmersheaven.com/c/MsgBoard/read.asp?Board=1&MsgID=14760 4&Setting=A9999F0001
: :
: :
: :
:
:

Re: for emu8086

Fri, 25 Oct 2002 05:57:15 -0700

This message was edited by nastinator at 2002-10-25 6:56:31

Thanks anyway enu8086, I figured it out. After I call Readint, it store the users input into AX, but I had declared my variable as a BYTE. So when I tried to multiply two numbers and tried to store it into a WORD it wouldn't work.

to store the result into first_number after recieving input is

call Readint ; get users input
mov first_number, ax ; store result into variable

Thanks
Frank

: Just let me see your entire code, this would help
: me to figure out the problem.
:
:
: : : :
: : : : .data
: : : : first_number db ?
: : : : message1 db "Enter number",0
: : : :
: : : : main proc
: : : :
: : : : mov dx, offset message1
: : : : call writestring
: : : : call Readint
: : : : *
: : : :
: : : : *this is where I need to assign the users input into first_number
: : : : (I will be multipling two numbers together later on)
: : : :
: : :
: : :
: : : - I think there is something unclear in your question.
: : : Do you have the code for "Readint" procedure?
: : : or do you ask us to write it for you?
: :
: : everything is there (all procedures), it's just that I get an error when
: : I try to multiply the first_number by the second_number. The error is "constant expression expected". What I want to know is, how do I put the users input (number) into the variable First_Number.
: :
: : I tried mov first_number, ax (I believe that the input is put into ax) but I still get an error.
: :
: : Thanks
: : Frank
: :
: : :
: : : if it's the first case you maybe interested in message here:
: : : http://www.programmersheaven.com/c/MsgBoard/read.asp?Board=1&MsgID=14760 4&Setting=A9999F0001
: : :
: : :
: : :
: :
: :
:
: