枚举类型最常使用场景--常量集合

  1. 错误编码 例如:vddk中的VixError,截取一段如下
/*
 * The error codes are returned by all public VIX routines.
 */
enum {
   VIX_OK                                       = 0,

   /* General errors */
   VIX_E_FAIL                                   = 1,
   VIX_E_OUT_OF_MEMORY                          = 2,
   VIX_E_INVALID_ARG                            = 3,
   VIX_E_FILE_NOT_FOUND                         = 4,
   VIX_E_OBJECT_IS_BUSY                         = 5,   
   ......
}
  1. windows api中分区表类型
typedef enum _PARTITION_STYLE {
    PARTITION_STYLE_MBR,
    PARTITION_STYLE_GPT,
    PARTITION_STYLE_RAW
} PARTITION_STYLE;

不难看出,枚举类型可以当普通常量来使用,而且这些常量属同一类,比如星期,月份,错误编码,控制代码等。

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转载自blog.csdn.net/niu91/article/details/62041381