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Cx51 User's Guide
Cx51 Introduction Compiling Programs Language Extensions
Keywords Memory Areas Program Memory Internal Data Memory External Data Memory Far Memory SFR Memory Memory Models Small Model Compact Model Large Model Memory Types bdata code data far idata pdata xdata Data Types Special Function Registers sfr sfr16 sbit Bit-Addressable Objects bit Standard C Types void char int enum float double Type Modifiers signed unsigned short long Type Qualifiers const volatile Storage Classes auto register extern static Absolute Variable Location Pointers Generic Pointers Memory-Specific Pointers Pointer Conversions Abstract Pointers Function Declarations Parameters and the Stack Parameters and Registers Return Values Memory Models Register Banks Register Bank Access Interrupt Functions Reentrant Functions Alien (PL/M-51) Function Real-Time Function Tasks Preprocessor Advanced Programming 8051 Derivatives Error Messages Library Reference Appendixenum
The enum keyword defines set of constants of type char or type int depending on the range of values of the set. It is used as follows:
enum « tag » {name « = value », ...};
Where
| tag | is the name of the enum set. |
| name | is the name of an enum constant. |
| value | is the value to assign to the constant. If the value is missing, then it is assumed to be the value of the previous constant in the set + 1. The default value for the first constant in the list is 0. |
Define an enum type in your program as follows:
enum tag name « = value »;
Where
| tag | is the name of the enum set. |
| name | is the name of the variable. |
| value | is the value to assign to the variable. |
Refer to 1-Byte Scalars or 2-Byte Scalars for information regarding the format of enum constants.
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