Character variable (8-bit unsigned)
Bool
Boolean variable (1-bit)
Variables inside macros are initialized to all ‘1’s as a default (i.e. 0xFFFF), so don’t
assume they are zero values when you enter the macro. It is good programming
practice to initialize variables during declaration, or use assignment statements before
they are used.
Variable Initialization
Initialize a value of variable in the declaration statement directly. (e.g: int RPM = 75) Use the assignment operator
(=) to initialize a value to the variable. Variables can be declared and initialized in the following manor:
Stacked Example: Inline Example (separate like-types with a comma):
short a = 0
short b = 0
short c = 0
short a=0, b=0, c=0
Variables contain an unknown, random value when declared. Variables must be
initialized before they are used.
Array Initialization
For mats:
int MyArray[10] = {1,2,3,4,5,6,7,8,9,10}
char LetterArray[6] = ‘MYWORD’
The initial values are written within the brackets {} and are divided by comma (,). These values are assigned in
order from left to right starting from array index=0.
Con stants:
A constant is a numeric or boolean value that does not change. Constants may be written as any of the following:
Written As
Examples
Decimal constant
1234
short MyVal = 1234
Hexadecimal constant
0xFA20
short MyVal = 0xFA20
ASCII code (character constant)
‘ABCD’
char String[4] = ‘ABCD’
Boolean: True (not zero), False (zero)
True, 1, False, 0
bool Done = 0, or, bool Done = False
Reserved Words
The following symbols and names are keywords that are reserved for use by macros. They cannot be used (as a
complete name) in any function name, array name, or variable name. However, the reserved words may be
contained within a variable name such as: my_int, TheEnd, etc.
And
down
int
Step
bool
Else
next
Then
Break
End
not
To
Binaux
False
Or
True
Binplc
float
return
void
Case
For
select
wend
char
GetData
SetData
While
Continue
If
short
xor
1010-1001a, Rev 02
Macros
249
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