Abl-electronic PIC Microcontrollers PIC16 Manual de usuario descargar pdf (Pagina 71)

The order of constants can be explicitly re-arranged. For example:

enum colors { black,

// value 0

red,

// value 1

green,

// value 2

blue=6,

// value 6

violet,

// value 7

white=4 };

// value 4

Initializer expression can include previously declared enumerators. For example,

in the following declaration:

enum memory_sizes { bit = 1, nibble = 4 * bit,

byte = 2 * nibble, kilobyte = 1024 * byte };

nibble would acquire the value 4, byte the value 8, and kilobyte the value

8192.

Anonymous Enum Type

In our previous declaration, the identifier

colors is the optional enumeration tag

that can be used in subsequent declarations of enumeration variables of type

colors:

enum colors /jointfilesconvert/1192046/bg, border;

// declare variables /jointfilesconvert/1192046/bg and border

As with struct and union declarations, you can omit the tag if no further variables

of this enum type are required:

/* Anonymous enum type: */

enum {black, red, green, blue, violet, white} color;

Enumeration Scope

Enumeration tags share the same name space as structure and union tags.

Enumerators share the same name space as ordinary variable identifiers. For more

information, consult Name Spaces.

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