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Forum Index : Microcontroller and PC projects : A new Bug or is it me ?

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plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 03:14am 10 Nov 2014

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MkII last update

Dim a as integer
A =1234
Test (a)

End

Sub test(a)
Dim b as integer
b= a
Print b
Print a

End sub

This works iirc only for small int's .
If you call the test sub with big int's
Print a shows. XxxxxE^xx
Looks like a casting problem.

Cant test it because iam at work, can anyone confirm ?Edited by plasma 2014-11-11

G8JCF

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Joined: 15/05/2014
Location: United Kingdom
Posts: 676

Posted: 04:00am 10 Nov 2014

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Sub test(a) should be Sub test(a%)

Peter

The only Konstant is Change

plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 04:04am 10 Nov 2014

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Ah ok thx

G8JCF

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Posted: 04:38am 10 Nov 2014

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The formal parameter 'a' in Sub test(a) is NOT the same thing as the variable 'a' declared earlier. The formal parameter 'a' in Sub test(a) says that Sub test is expecting a floating point single variable and hence MMBasic will convert what you supply into a single floating point variable and pass that value into Sub test.

At least that's my understanding

Peter

The only Konstant is Change

plasma
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Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 05:55am 10 Nov 2014

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I thinking the wrong way before.
Its clear ,a parameter from the sub arguments needs
a declaration inside.
I used this millions times before but nether
About why,only what.
I dunno why i think a dim is all i need , maybe
Glbasic,Bmax or an other compiler is using this.

G8JCF

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Joined: 15/05/2014
Location: United Kingdom
Posts: 676

Posted: 07:35am 10 Nov 2014

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Try doing Option Default Integer, that should make it all work as you had it before, but not good practice IMHO. Explicit declaration of all variables should lead to more error-free code.

Peter

The only Konstant is Change

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