scoped enumerations
It is new feature in c++11 and it adds the “class” keyword after “enum” keyword.
Example: enum color{red, blue,green}; –> enum class color{red, blue,green};
Now question is What is the problem with existing one ?
Problem: We cannot use the same name for declaration of variable that is already used in enum due to same scope.
enum color{red, blue, green};
int red = 5;
//error: ‘int red’ redeclared as different kind of symbol
Solution:
Use scoped enum (Its similar like namespace, resolving name conflicts )
source code with example:
#include<iostream>
//New Scoped enum is added
enum class color{red, blue, green};
int red = 5;
int main()
{
std::cout<<"In Enum"<<std::endl;
std::cout<<"red"<<red<<std::endl;
return 0;
}
Output:
In Enum red:5