Working with numbers. (Solved)

Authoring Inform 7
1

Hello,

I’m new to Inform 7, and I’m practicing Inform’s language right now to get hang of it.

My problem at the moment is getting the following code to work:

[code]The number A is a number that varies.

The number B is a number that varies.

number A is usually 2. number B is 5.

The result is a number that varies.

result is usually number A + number B.

When play begins:
say “The result is [result in decimal notation].”.[/code]

This is the error it results in:

I’d also like to know how to get a number as the reader’s input and use it.

Thanks for reading,
OldTimes.

2

I’m not quite sure what you’re trying to do with ‘usually’ here. What you’re trying to do would be expressed by

number A is 2.
number B is 5.
result is 7.

But my guess is that you want ‘result’ to track A and B. You can’t do that with ‘usually’, which will only set the initial value. For that, you want something more like

[code]number A is 2.
number B is 5.

Every turn: now result is number A + number B.[/code]

How you do this depends on how you want the player’s command to work. Most simply, you’d create a new action that was just about entering numbers:

[code]
Enumerating is an action applying to one number. Understand “[number]” as enumerating.

Instead of enumerating: say “You just entered [the number understood].”[/code]

3

Rather than an every-turn rule, you could define a function:

To decide what number is the current result: decide on number A + number B.
4

Thank you both for the help.