# HELP.. assembly program- Even Odd numbers

Discussion in 'Assembly Language Programming (ALP) Forum' started by RobertH900, Nov 11, 2009.

1. ### RobertH900New Member

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hey, watsup all

I'm new to assebmly language and i need help with a program (if you all wana help)
the program should prompt the user to enter a number if the number is even output 0 and 1 if it is even

i have this so far:

.begin
in first
here is where i have problems, i don't know how to say, if first is even print 1 for even, if odd print 0

out first
jump done
done: halt
first: .data 0
even: .data 1
odd: .data 0
.end

thanx,

2. ### xpi0t0sMentor

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Your course notes should give you an example of how to display a message and receive input.

3. ### RobertH900New Member

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my course notes only gives me an example of a program that determines which is larger of to inputs that is prompted to enter

please if anyone can help, my assignment is past due

4. ### xpi0t0sMentor

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OK, so basically you can use the same program with the following changes:
- input 1 number instead of 2
- test if it's odd or even instead of whether it's larger or smaller than another.
- change any messages displayed by the program.

You can test if a number is odd by looking at the least significant bit of the number: if 1 then it's odd, if 0 then it's even.

5. ### RobertH900New Member

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, but where would i put the information you provided, i have a big problem with the organization

if you could give me an example, that would be helpful

Thank you,

6. ### xpi0t0sMentor

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Post the code (using code tags) and I'll show you where to make the changes.

7. ### RobertH900New Member

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here is what i have until now, i just want it to print 0 for even numbers and 1 for odd nunmbers

Code:
```.begin
in first
out first
jump done
done: halt
first: .data 0
even: .data 1
odd: .data 0
.end```

8. ### xpi0t0sMentor

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Sorry, the code I meant was the one you described as "my course notes only gives me an example of a program that determines which is larger of to inputs that is prompted to enter". Not the code you haven't written yet cos you can't figure it out.

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