User`s manual

mikroBASIC

- Basic Compiler for Microchip PIC microcontrollers

mikroBASIC

MikroElektronika: Development tools - Books - Compilers

making it simple...

Procedures and functions, collectively referred to as routines, are self-contained

statement blocks that can be called from different locations in a program. Function

is a routine that returns a value when it is executed. Procedure is a routine that

does not return a value.

Once these routines have been defined, you can call them once or multiple times.

Procedure is called upon to perform a certain task, while function is called to com-

pute a certain value. Function calls, because they return a value, can be used as

expressions in assignments and operations.

Procedure declaration has the form:

sub procedure procedureName(parameterList)

localDeclarations

statements

end sub

where procedureName is any valid identifier, statements is a sequence of state-

ments that are executed upon the calling the procedure, and (parameterList) and

localDeclarations are optional declaration of variables and/or constants.

sub procedure pr1_procedure(dim par1 as byte, dim par2 as byte,

dim byref vp1 as byte, dim byref vp2 as byte)

dim locS as byte

par1 = locS + par1 + par2

vp1 = par1 or par2

vp2 = locS xor par1

end sub

par1 and par2 are passed to the procedure by the value, but variables marked by

keyword

byref are passed by the address.

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PROCEDURES AND FUNCTIONS

Procedures