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# HP Prime - How do you get a variable from a program put on the stack?

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Does anyone know how to get a variable created in a program put onto the RPN stack on the HP Prime?

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## HP Prime - How do you get a variable from a program put on the stack?

Hi!, @WDTau :

Kind Regards !.
Have a nice day !.
Provost in HP Spanish Public Forum ... https://h30467.www3.hp.com/
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## HP Prime - How do you get a variable from a program put on the stack?

This does not answer my question as the article only deals with using variables on the stack.

I want to have a number or piece of text  left on the stack after a HP Prime program has terminated and that number or piece of text was stored in a variable during the execution of the program.

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## HP Prime - How do you get a variable from a program put on the stack?

The last return value of whatever is in the program will be returned, as will "return" begin called earlier in a program.

Only a single value of any type may be returned.

EXPORT MyFunction(a)

BEGIN

IF(a==1) RETURN "a is one";

"a not 1"

END;

TW

Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
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## HP Prime - How do you get a variable from a program put on the stack?

TW:

Your sample program came up with an error so I changed it to:-

EXPORT MyFunction(a)
BEGIN
IF(a==1) THEN
RETURN "a is one";
ELSE
RETURN "a not 1";
END;
END;

to get it to run.

When it runs it displays either "a is one" or "a is not one" in a display box in the centre of the screen, but nothing is returned to the stack (which is what I want).

Any ideas on this?

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## HP Prime - How do you get a variable from a program put on the stack?

When you run a program from the program catalog, it pacakges the restult automatically since there is no where for the result to "go".

Call your function from the RPN stack, and the result goes there.

TW

Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.
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