====== #define name constants ======

By using ''#define'', you can assign names to values before compiling.  

<code xbasic>
#define motorport 4
Low motorport
</code>

In the example above, ''motorport'' will be compiled as 4.  You can also use ''Const'' for similar tasks. However, ''Const'' will use data memory; ''#define'' will only use program memory.

<code xbasic>
CONST motorport = 4
Low motorport
</code>

The following example uses ''#define'' for replacing a line of code:

<code xbasic>
#define FLAGREG1 2
#define f_led FLAGREG1.BIT0
#define calc (4+i)*256
f_led = 1                     ' Set FLAGREG1’s bit zero to  1.
If f_led = 1 Then f_led = 0   ' Make it easier to read.
j = calc                      ' Calculations can be simplified
</code>

**NOTE**\\
The "name" argument in a ''#define'' statement is not case-sensitive.  For example, ''#define ALPHA 0'' and
''#define alpha 0'' do not define different constants.  They both define the same constant.

{{:cubloc:define:cublocdefine.png?600|}}

See also [[:cubloc:Const:]].


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