Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

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Qualifier volatile

The qualifier 

volatile

 implies that a variable may change its value during runtime independently from the program. 

Use the volatile modifier to indicate that a variable can be changed by a background routine, an interrupt routine, or I/O 

port. Declaring an object to be volatile warns the compiler not to make assumptions concerning the value of an object 

while evaluating expressions in which it occurs because the value could be changed at any moment.

Operators  are  tokens  that  trigger  some  computation  when  being  applied  to  variables  and  other  objects  in  an 

expression.

There are four types of operators in mikroBasic PRO for dsPIC30/33 and PIC24:

 

- Arithmetic Operators 

 

- Bitwise Operators 

 

- Boolean Operators 

 

- Relational Operators

Operators Precedence and Associativity

There are 4 precedence categories in mikroBasic PRO for dsPIC30/33 and PIC24. Operators in the same category 

have equal precedence with each other.

Each category has an associativity rule: left-to-right (

→

), or right-to-left (

←

). In the absence of parentheses, these rules 

resolve the grouping of expressions with operators of equal precedence.

4

1

@   not   +   -

←

3

2

*   /   div   mod   and   <<   >>

→

2

2

+   -   or   xor

→

1

2

=   <>   <   >   <=   >=

→

Arithmetic operators are used to perform mathematical computations. They have numerical operands and return 

numerical results. Since the 

char

 operators are technically 

bytes

, they can be also used as unsigned operands in 

arithmetic operations.

All arithmetic operators associate from left to right.