![ You have an array that stores your grades like:
int Grade[5];
Now, you need to assign the grades of your subjects like:
(Math, English, Biology, Chemistry, History)
to your array.
So, in Math you have a grade 1
Grade[0] = 1; // Math --> 1
for English you have a grade 3
Grade[1] = 3; // English --> 3
Later in your code, you want to retrieve the grade of English. For that you will
have to remember that in your Grade[ ] array the second entry [1] would be
English.
WITH ENUMERATION WE CAN DO IT IN AN EASY WAY.](https://image.slidesharecdn.com/enumerationtype-190717162054/85/Enumeration-type-2-320.jpg)
![SYNTAX:
enum subject {
Math,
English,
Biology,
Chemistry,
History
};
Now every subject in the brackets will get their index number,
without us to mention like,
Math = 0
English=1
Biology=2 //Which makes the Grade[5], in total.
Chemistry =3
History= 4](https://image.slidesharecdn.com/enumerationtype-190717162054/85/Enumeration-type-5-320.jpg)
![ The expression Grade[0] is the same as
Grade[math]
Grade[0] = 1; // Math --> 1
You do not need to know which subject
has which index any more, you simply call
them by their name.](https://image.slidesharecdn.com/enumerationtype-190717162054/85/Enumeration-type-6-320.jpg)
Enumeration type
- 2. You have an array that stores your grades like: int Grade[5]; Now, you need to assign the grades of your subjects like: (Math, English, Biology, Chemistry, History) to your array. So, in Math you have a grade 1 Grade[0] = 1; // Math --> 1 for English you have a grade 3 Grade[1] = 3; // English --> 3 Later in your code, you want to retrieve the grade of English. For that you will have to remember that in your Grade[ ] array the second entry [1] would be English. WITH ENUMERATION WE CAN DO IT IN AN EASY WAY.
- 3. First we are gonna know the meaning of the the word enumeration, generally. “It is the action of mentioning a number of things one by one” In C++, enumeration means, “An Enumeration is user-defined data type that consists of Integral constants” ‘enum’ keyword is used to define and enumeration.
- 4. enum season { spring, summer, autumn, winter }; Here, the name of the enumeration is season. And, spring, summer and winter are values of type season. By default, spring is 0, summer is 1 and so on. You can change the default value of an enum element during declaration
- 5. SYNTAX: enum subject { Math, English, Biology, Chemistry, History }; Now every subject in the brackets will get their index number, without us to mention like, Math = 0 English=1 Biology=2 //Which makes the Grade[5], in total. Chemistry =3 History= 4
- 6. The expression Grade[0] is the same as Grade[math] Grade[0] = 1; // Math --> 1 You do not need to know which subject has which index any more, you simply call them by their name.
- 7. SOURCE CODE: #include <iostream> using namespace std; enum week { Monday, Tuesday, FOR INSTANCE: Wednesday, If I initialize only Monday as to (Monday=1) Thursday , then? Friday, Saturday, Sunday }; int main() { week today; today = Monday; cout << "Day: " << today +1; return 0; }
- 8. #include<iostream> using namespace std; enum suit{ spade, SPADE HEART club, heart, diamond }; int main() { suit mycard; suit hercard; mycard= club; DIAMOND CLUB hercard= heart; if(mycard>hercard) { cout<<"You win!"<<endl; }else { cout<<"You lose!"<<endl; } return 0; }