Features
Enum
A user-defined type that improve readability.
Overview
An enum is a special user-defined type that represents a group of constants.
syntax
enum identifier{
IDENTIFER,
IDENTIFER,
...,
IDENTIFER
}
You can also assign a value to a constant.
syntax
enum identifier{
IDENTIFER = value,
IDENTIFER = value,
...,
IDENTIFER = value
}
Example
enum Level { Low, Medium, High }
int main(string args[]){
Level current_level = Level.Low;
return 0;
}
Note
- Cambo is strongly typed, so is
enum. - Although each constant has its own integer value, they cannot be process directly with other integer types.
- Two enum values with the same integer value are not considered equal if they belong to different enum types.
enum Level {Low, Medium, High}
enum Color {Red, Yello, Green}
int main(string args[]){
Level current_level = Level.Low;
if(current_level == Color.Red){
# this won't execute!
}
current_level = Color.Red; # error!
int color_code = Color.Red; # error!
return 0;
}
Level.Low and Color.Red holds the same integer value, 0. But the condition will never be true because they belong to different enum type, Level and Color.
Enum's value
You may have already read the code above, we can not process the constant directly, however we do have a way to access the value of each constant.
enum Level {Low, Medium, High}
enum Color {Red, Yello, Green}
int main(string args[]){
int a = Level.Low.value;
int b = Color.Red.value;
if(Level.Low.value == Color.Red.value){
# this will execute.
}
return 0;
}
All code above are valid, and can execute without problems!