CONFIG BASE

CONFIG BASE

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Action

This option specifies the lower boundary of all arrays.

 

 

Syntax

CONFIG BASE= value

 

 

Remarks

By default the first element of an array starts at 1. With CONFIG BASE=0 you can override this default so that all arrays start at 0.

In some cases it is simpler that elements start at 0.

A constant named _BASE reflects the setting. You can not change the BASE at run time.

 

noticeWhen you change this setting in existing code, you need to alter your code. For example when you used this code:

Dim a(10) as byte : a(10) = 10

And you set CONFIG BASE=0, it will mean that element 10 is invalid.

 

While in QB an additional element is created, this is not a good idea in bascom because it will require more space.

 

 

See also

DIM

 

 

Example

CONFIG BASE=0

Dim ar(10) as byte , j as byte

For j=0 to 9 'array uses element 0-9

   ar(j)=j

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Example

CONFIG BASE=1

Dim ar(10) as byte , j as byte

For j=1 to 10   ' arrays uses element 1-10

  ar(j)=j

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