c++中enum 如何使用

 

枚举类型，顾名思义，“枚”作为量词，作“个”讲，那么枚举，就是一个一个的列举，如果一件事情能够被一个一个的列举，那么它的数量肯定就是有限的，否则是不能被一一列举出来的。

所以枚举类型即为能被列举的常量的一个集合。

实例：

 1 typedef enum EnumOfSystemCanID
 2 {
 3     ID_CAN_FIBER_HB     = 0x1B0,
 4     ID_CAN_FIBER_CTL    = 0x1A0,
 5 
 6     ID_CAN_DIO_HB       = 0x2B0,
 7     ID_CAN_DOI_SMP_1    = 0x2B1,
 8     ID_CAN_DOI_SMP_2    = 0x2B2,
 9     ID_CAN_DOI_SMP_3    = 0x2B3,
10     ID_CAN_DOI_SMP_4    = 0x2B4,
11 
12     ID_CAN_DIO_OUT_CTL  = 0x2A0,
13     ID_CAN_DIO_SMP_CTL  = 0x2A1,
14     ID_CAN_DIO_PW_OUT   = 0x2A2,
15 
16     ID_CAN_PWMPTC_HB    = 0x3B0,    
17     ID_CAN_PWMPTC_SELRES= 0x3A1,    
18     ID_CAN_PWMPTC_PWM   = 0x3A2,    
19     ID_CAN_PWMPTC_SMPCTL= 0x3A3,    
20 
21     ID_CAN_SIGGEN1_HB    = 0x4B0,
22     ID_CAN_SIGGEN1_CTL   = 0x4A1,
23     ID_CAN_SIGGEN1_SYNC  = 0x4A2,
24 
25     ID_CAN_SIGGEN2_HB    = 0x5B0,
26     ID_CAN_SIGGEN2_CTL   = 0x5A1,
27     ID_CAN_SIGGEN2_SYNC  = 0x5A2,
28 
29 }E_BRD_CAN_ID;