Abl-electronic PIC Microcontrollers PIC16 Bedienungsanleitung PDF herunterladen (Seite 58)

Semicolon

The semicolon (;) is a statement terminator. Any legal C expression (including the

empty expression) followed by a semicolon is interpreted as a statement, known as

an expression statement. The expression is evaluated and its value is discarded. If

the expression statement has no side effects, mikroC might ignore it.

a + b;

/* evaluate a + b, but discard value */

++a;

/* side effect on a, but discard value of ++a */

;

/* empty expression or a null statement */

Semicolons are sometimes used to create an empty statement:

for (i = 0; i < n; i++) ;

For more information, see Statements.

Colon

Use the colon (:) to indicate a labeled statement. For example:

start: x = 0;

...

goto start;

Labels are discussed in Labeled Statements.

Asterisk (Pointer Declaration)

The asterisk (*) in a declaration denotes the creation of a pointer to a type:

char *char_ptr;

/* a pointer to char is declared */

You can also use the asterisk as an operator to either dereference a pointer or as

the multiplication operator:

i = *char_ptr;

For more information, see Pointers.

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Abl-electronic PIC Microcontrollers PIC16 Bedienungsanleitung Seite 58