Abl-electronic PIC Microcontrollers PIC16 Bedienungsanleitung PDF herunterladen (Seite 98)

Static

Global name declared with

static specifier has internal linkage, meaning that it

is local for a given file. See Linkage for more information.

Local name declared with

static specifier has static duration. Use static with

a local variable to preserve the last value between successive calls to that function.

See Duration for more information.

Extern

Name declared with

extern specifier has external linkage, unless it has been pre-

viously declared as having internal linkage. Declaration is not a definition if it has

extern specifier and is not initialized. The keyword extern is optional for a

function prototype.

Use the

extern modifier to indicate that the actual storage and initial value of a

variable, or body of a function, is defined in a separate source code module.

Functions declared with extern are visible throughout all source files in a pro-

gram, unless you redefine the function as

static.

See Linkage for more information.

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Abl-electronic PIC Microcontrollers PIC16 Bedienungsanleitung Seite 98