ABL electronic PIC Microcontrollers PIC18 User Manual

Now, the following code,

LCD_PRINT(temp)

will be preprocessed to this:

Lcd_Out_Cp("temp" ": "); Lcd_Out_Cp(IntToStr(temp));

Operator 

##

is used for token pasting: you can paste (or merge) two tokens togeth-

er by placing 

##

in between them (plus optional whitespace on either side). The

preprocessor removes the whitespace and the 

##

, combining the separate tokens

into one new token. This is commonly used for constructing identifiers.

For example, we could define macro 

SPLICE

for pasting two tokens into one iden-

tifier:

#define SPLICE(x,y) x ## _ ## y

Now, the call 

SPLICE(cnt, 2)

expands to identifier 

cnt_2

.

Note: mikroC does not support the older nonportable method of token pasting
using 

(l/**/r)

.

Conditional compilation directives are typically used to make source programs
easy to change and easy to compile in different execution environments. mikroC
supports conditional compilation by replacing the appropriate source-code lines
with a blank line.

All conditional compilation directives must be completed in the source or include
file in which they are begun.

mikroC - C Compiler for Microchip PIC microcontrollers

mikroC

making it simple...

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