Abl-electronic PIC Microcontrollers PIC16 Manual do Utilizador descarregar pdf (Página 57)

100

101

Braces

Braces { } indicate the start and end of a compound statement:

if (d == z) {

++x;

func();

}

The closing brace serves as a terminator for the compound statement, so a semi-

colon is not required after the }, except in structure declarations. Often, the semi-

colon is illegal, as in

if (statement)

{ ... }; /* illegal semicolon! */

else

{ ... };

For more information, refer to Compound Statements.

Comma

The comma (,) separates the elements of a function argument list:

void func(int n, float f, char ch);

The comma is also used as an operator in comma expressions. Mixing the two

uses of comma is legal, but you must use parentheses to distinguish them. Note

that (

exp1, exp2) evalutates both but is equal to the second:

/* call func with two args */

func(i, j);

/* also calls func with two args! */

func((exp1, exp2), (exp3, exp4, exp5));

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